19-4720; Rev 2; 8/10 Laser Driver for Projectors The MAX3600B/R/G are monochrome drivers for blue, red, and green lasers. The MAX3600A guarantees higher full-scale output currents than the MAX3600, and is recommended for new designs. Features S Integrates Four Current-Output Laser Drivers S Compatible with Red, Blue, and Green Lasers S 10-Bit Video DACs, fCLK = 1MHz to 160MHz S 8-Bit Gain and Offset DACs S 2ns Output Switching Time S Serial Port Control S Laser Enable S Random-Noise Generator and Periodic Off S 5mm x 5mm, 40-Pin TQFN Package (0.4mm Pitch) Applications Ordering Information RGB Pico Laser Projector PART TEMP RANGE PIN-PACKAGE Up to WXGA and 1080p Resolution Projectors MAX3600CTL+ 0NC to +70NC 40 TQFN-EP* Monochrome Blue, Green, or Red Pico Laser Projector MAX3600ACTL+ 0NC to +70NC 40 TQFN-EP* MAX3600RCTL+ 0NC to +70NC 40 TQFN-EP* MAX3600GCTL+ 0NC to +70NC 40 TQFN-EP* MAX3600BCTL+ 0NC to +70NC 40 TQFN-EP* Typical Operating Circuits and Pin Configuration appear at end of data sheet. +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. Not recommended for new designs. Future product--contact factory for availability. Simplified Functional Diagram 10-BIT VIDEO 3-WIRE BUS OUTPUT ENABLE SYNC D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 CLK PO REF CS SDA SCL VM EN_MAIN VA1 VA2 VA3 VA4 VIDEO DEMULTIPLEXER VIDEO1 OUTPUT 1 +VRED +VGREEN +VBLUE +VNOISE OUT1 RED LASER VIDEO2 PERIODIC OFF PRBS NOISE GENERATOR VIDEO3 OUTPUT 2 OUT2 GREEN LASER OUTPUT 4 OUTPUT 3 OUT4 OUT3 NOISE DIODE BLUE LASER VCCA SERIAL PORT VCCD MAX3600 MAX3600A CONTROL LOGIC +VCC VEE_T, VEE EP ________________________________________________________________ Maxim Integrated Products1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. MAX3600 General Description The MAX3600 laser driver for projectors supports video imaging with red, blue, and green lasers. Each output includes a 10-bit video digital-to-analog converter (DAC) with programmable gain and offset. For operation with synthetic green lasers, the driver includes a periodic off function and a fourth output with a random-noise generator. MAX3600 Laser Driver for Projectors ABSOLUTE MAXIMUM RATINGS Supply Voltage Range, VCCA, VCCD....................-0.3V to +4.0V Voltage Range at VA1, VA2, VA4...........................-0.3V to +6.0V Voltage Range at VA3...........................................-0.3V to +8.5V Voltage Range at OUT1............................ -0.3V to (VA1 + 0.3V) Voltage Range at OUT2............................ -0.3V to (VA2 + 0.3V) Voltage Range at OUT3............................ -0.3V to (VA3 + 0.3V) Voltage Range at OUT4............................ -0.3V to (VA4 + 0.3V) Voltage Range (VA1 - VOUT1), (VA2 - VOUT2), (VA4 - VOUT4) .......................................................... 0 to +6.0V Voltage Range (VA3 - VOUT3)..................................... 0 to +7.5V Voltage Range at D0 to D9, SYNC, CLK, PO, SCL, SDA, CS, EN_MAIN, VM, REF, VEE_T, RES... -0.3V to (VCC + 0.3V) Current at OUT1, OUT2, OUT3, OUT4.....................See Table 3 Current at D0 to D9, SYNC, CLK, PO, SCL, SDA, CS, EN_MAIN, VM, REF, VEE_T, RES.......................... Q50mA Current at REF................................................................. Q0.5mA Continuous Power Dissipation (TA = +70NC) 40-Pin TQFN (derate 35.7mW/NC above +70NC)........2857mW Storage Temperature Range............................. -40NC to +150NC Lead Temperature (soldering, 10s).................................+300NC Soldering Temperature (reflow).......................................+260NC Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VCC = 3.3V Q5%, TA = 0NC to +70NC, TJ P +125NC, EN_MAIN high, VC_ R 0.9V, unless otherwise noted.) (Note 1, Equation 1) PARAMETER SYMBOL CONDITIONS MIN TYP 100 160 MAX UNITS VIDEO DAC (10 BITS) Maximum Conversion Rate Msps Settling Time (Note 2) 4 Rise/Fall Time (20% to 80%) (Note 2) 1 (4) > 3.1 6.0 OUT3 enabled > 4.0 8.5 OUT3 disabled > 3.1 8.5 Analog Supply Voltage VA1, VA2, VA4 VA3 Compliance Voltage Analog Supply Current (IVA - IOUT) (Note 3, Figure 8) VC_ IDAC_G0 VC_ = VA_ - VOUT_ CLK static ns 0.5 (6.0) OUT1 18 31 OUT2 18 34 OUT3 19 26 OUT4 15 23 IDAC_G1 ns V V mA 3 IDAC_G2 (30) 80 OUT1 (6) 12 (18) OUT2 (15) 40 (60) OUT3 (3.5) 10 (15) GAIN DAC (8 BITS): VIDEO_ = 3FFh Minimum Full-Scale Current (gs_ = 00h) Maximum Full-Scale Current: MAX3600 (gs_ = FFh) Maximum Full-Scale Current: MAX3600A/R/G/B (gs_ = FFh) 2 GLOW GHIGH + GLOW GHIGH + GLOW OUT4 (3) 10 (25) OUT1 175 227 (270) OUT2 550 690 (850) OUT3 140 170 (200) OUT4 140 185 (230) OUT1 210 280 (330) OUT2 630 760 (955) OUT3 140 170 (210) OUT4 140 185 (300) mA mA mA Laser Driver for Projectors MAX3600 ELECTRICAL CHARACTERISTICS (continued) (VCC = 3.3V Q5%, TA = 0NC to +70NC, TJ P +125NC, EN_MAIN high, VC_ R 0.9V, unless otherwise noted.) (Note 1, Equation 1) PARAMETER Settling Time SYMBOL tSG CONDITIONS MIN To 5% of final value TYP MAX UNITS 10 (50) Fs 83 (110) OFFSET DAC (8 BITS): VIDEO_ = 00h, gs_ = 00h OUT1 Maximum Offset: MAX3600/A/R/G/B OSHIGH Offset Error OSLOW Offset Settling Time tSO 60 OUT2, OUT3 65 83 (110) OUT4 120 155 (200) VOUT1, VOUT2, VOUT4 = 1.6V; VOUT3 = 2.5V -25 +0.2 +25 FA 10 (50) Fs To 5% of final value mA LOGIC I/O: SDA, SCL, CS, VM, EN_MAIN Input High Voltage VIH1 Operating condition VCC 0.3 VCC + 0.3 V Input Low Voltage VIL1 Operating condition -0.3 +0.3 V SDA (write), SCL, CS VM to VCCD -10 Q0.2 +10 FA 25 60 100 EN_MAIN to VEE 25 60 100 Input Current Input Resistance Input Capacitance (1) SCL, CS, SDA, VM, EN_MAIN Input Hysteresis 100 From serial port load Enable/Disable Time Disable Time tDIS Sink Current at SDA pF mV < 10 VMh to final value < 0.25 EN_MAINh to final value < 0.25 0.01 EN_MAINi to IOUTi Read mode, VSDA = 0.6V kI 10 16 (140) > 160 Fs (1) Fs mA VIDEO DATA INPUTS: D0 TO D9, CLK, SYNC, PO Minimum Frequency fCLK_MIN Maximum Frequency fCLK_MAX Clock Duty Cycle 0.01 (1) MHz MHz DDR clock, operating condition (45) (55) Standard clock, operating condition (42) (58) % Setup Time tSU Operating condition (0.8) ns Hold Time tH Operating condition (0.8) ns Input Switching Time Operating condition (10% to 90%) Input Voltage Range VIN Input High Threshold VIH2 -0.3 Input Low Threshold VIL2 Relative to VREF Relative to VREF Reference Voltage VREF Operating condition Data Input Capacitance CD Termination Resistors RTT Figure 6 REF Input Current IREF VREF = VCC/2 Propagation Delay 1.5 -170 0.83 ns VCC + 0.3 V +170 mV mV VCC/2 0.4 D0:D9 to OUT_, pixel clocks V pF 450 900 1500 I -5 -1.2 +5 FA 3 3 MAX3600 Laser Driver for Projectors ELECTRICAL CHARACTERISTICS (continued) (VCC = 3.3V Q5%, TA = 0NC to +70NC, TJ P +125NC, EN_MAIN high, VC_ R 0.9V, unless otherwise noted.) (Note 1, Equation 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS (102) MHz (1040) kHz (150) MHz PO GENERATOR Pixel Clock Range for PO Operating condition Minimum PO Pulse Width Four subpixels PLL Bandwidth 24 3.5 (560) 800 ns PRBS OSCILLATOR PRBS Oscillator Frequency fPRBS1 SERIAL PORT: SDA, SCL, CS (Figure 14) Maximum Clock Frequency fSCL Input Edge Time fPIXEL = 24MHz to 102MHz (100) Write mode (25) 20% to 80% tL MHz 5 ns (4) ns CS Leading Time SCL Pulse-Width High tCH SCL Pulse-Width Low tCL SCL to SDA Propagation Delay tD (10) ns Data In Setup Time tDS (10) ns Data In Hold Time tDH (10) ns tT (10) ns CS Trailing Time POWER SUPPLY: VCCA, VCCD Supply Current (IVCCA + IVCCD, gs_ = 80h, os_ = 80h, fCLK = 75MHz) 20 ns 20 ns IVCC1 VIDEO_ = 1F0h, CLK_SEL = 0, output disabled 62 80 IVCC2 CLK_SEL = 1, VIDEO_: 0 n 3FFh repeating 65 90 Output disabled 60 (70) IVCC2_ENLO mA POWER-ON RESET (Figure 15) VCC for Chip Enabled Power-On Reset Parameters IC Power-Up Time VPOR1+ 2.9 VPOR2+ Voltage for output on VCC 0.8 VPOR2- Voltage for output off VCC 0.9 VPOR3+ Voltage for output on 3.3 VPOR3- Voltage for output off V V 3.2 200 Fs Note 1: Parameters in parentheses ( ) are provided for guidance, but are not tested or guaranteed. Note 2: Figure 1 shows the AC test circuit. Settling time is defined from the 50% point of a transition to the greater of Q5% of IFINAL or Q1% of ISWITCH. Control register gs_ 34. See Figure 18. Note 3: IDAC G0 + IDAC_G1 x VD + IOUT/IDAC_G2, where VD is the average video bit density (Dbits/ns) as shown in Table 1. 4 Laser Driver for Projectors PIXEL TIME (ns) VIDEO CODE DBITS 0 0 1111111111 -- -- 1 10 0000000000 10 1.0 2 20 0111111111 9 0.9 3 30 1000000000 10 1.0 4 40 1000000001 1 0.1 RC MAX3600 Table 1. Example Calculation of Video Bit Density VD CC 4 VCC VCCA VCCD ICC OUT1 PROBE IA VA1 VA2 VA3 VA4 DATA SOURCE VA1 VA2 VA3 VA4 RC VL1 CC 2 OUT2 D0 MAX3600 D1 MAX3600A D2 D3 D4 D5 OUT3 D6 D7 D8 D9 CLK SYNC VM OUT4 PO SDA SCL EP CS VEE VEE_T EN_MAIN PROBE RC VL2 CC 20 PROBE RC VL3 CC VL1 = 2.2V, VL2 = 1.2V, VL3 = 3.5V, VL4 = 1.6V 3 PROBE VL4 Figure 1. Test Circuit 5 Typical Operating Characteristics (VCC = 3.3V, TA = +25NC, EN_MAIN high, unless otherwise noted. VC_ = VA_ - VOUT_.) 1.2 0.6 0.4 0.2 0.4 0.2 LSB 0.8 0 0 -0.2 -0.4 -0.2 -0.4 -0.8 -0.4 -0.6 -1.2 -0.6 -0.8 -1.6 -0.8 -1.0 -2.0 400 600 800 1000 0 200 400 600 800 -1.0 1000 0 800 VIDEO DNL OUT1 (gs1 = 20h, TA = -40C) VIDEO DNL OUT2 (gs2 = 20h, TA = -40C) VIDEO DNL OUT3 (gs3 = 20h, TA = -40C) 1.6 1.2 1.0 0.8 0.6 0.4 0.2 0.4 0.2 LSB 0.8 LSB 0.4 0 0 0 -0.2 -0.4 -0.2 -0.4 -0.8 -0.4 -0.6 -1.2 -0.6 -0.8 -1.6 -0.8 -1.0 -2.0 400 600 800 0 1000 200 600 800 -1.0 1000 0 VIDEO INL OUT1 gs2 = 20h, TA = -40NC 0 -10 gs2 = FFh, TJ = +125NC, VC_ = 0.9V -20 gs3 = FFh, TJ = +125NC, VC_ = 0.9V -20 -30 -30 -30 -40 -40 -40 -50 -50 -50 400 600 VIDEO CODE 800 1000 1000 gs3 = 20h, TA = -40NC 0 LSB gs1 = FFh, TJ = +125NC, VC_ = 0.9V 800 10 -10 LSB -10 600 VIDEO INL OUT3 10 MAX3600 toc07 gs1 = 20h, TA = -40NC 400 VIDEO CODE VIDEO INL OUT2 10 200 200 VIDEO CODE VIDEO CODE 0 400 MAX3600 toc08 200 1000 MAX3600 toc06 2.0 MAX3600 toc04 0.6 0 600 VIDEO CODE 0.8 -20 400 VIDEO CODE 1.0 0 200 VIDEO CODE MAX3600 toc09 200 MAX3600 toc05 0 6 0.8 0.4 0 MAX3600 toc03 1.6 LSB LSB 0.6 1.0 MAX3600 toc02 0.8 LSB 2.0 MAX3600 toc01 1.0 VIDEO DNL OUT3 (gs3 = FFh, TJ = +125C, VC_ = 0.9V) VIDEO DNL OUT2 (gs2 = FFh, TJ = +125C, VC_ = 0.9V) VIDEO DNL OUT1 (gs1 = FFh, TJ = +125C, VC_ = 0.9V) LSB MAX3600 Laser Driver for Projectors 0 200 400 600 VIDEO CODE 800 1000 0 200 400 600 VIDEO CODE 800 1000 Laser Driver for Projectors gs4 = FFh 2.0 MAX3600 toc11 MAX3600 toc10 90 70 MAX3600 toc12 GAIN DNL VIDEO INL OUT4 VIDEO DNL OUT4 28 VIDEO_ = 3FFh 1.2 OUT1, OUT2, OUT3, OUT4 18 50 LSB LSB LSB 0.4 gs4 = FFh, TJ = +125C, VC_ = 0.9V 30 -0.4 10 -1.2 8 gs4 = 20h, TA = -40C 400 600 800 1000 200 0 400 VIDEO CODE 800 -2.0 1000 40 0 80 VIDEO CODE GAIN INL VIDEO_ = 3FFh 6 120 10 gs_ = 00h, VIDEO_ = 00h gs_ = 00h, VIDEO_ = 00h OUT1, OUT2, OUT3, OUT4 OUT2, OUT3, OUT4 LSB 2 LSB LSB OUT2, OUT3 OUT1 -6 OUT4 -10 -0.4 -2 -1.2 -6 -2.0 80 120 160 200 240 80 GAIN CODE OUT2 PO PULSE (fCLK = 50MHz) 120 160 200 240 80 TRANSFER FROM VCC TO IOUT MAX3600 toc16 20 gs_ = 80h, os_ = 40h, VIDEO_ = 1FFh T = DIOUT/IOUT x 100%/DVCC (%/V) T (%/V) 9 7 6 OUT2 6 OUT4 4 240 gs_ = FFh, os_ = 0, VIDEO_ = 3FFh T = DIOUT/IOUT x 100%/DVA_ (%/V) 5 OUT4 4 3 OUT1 OUT1 2 OUT3 2 200 8 12 8 160 TRANSFER FROM VA TO IOUT 10 14 10 120 OFFSET CODE 16 OUT2 OUT3 1 0 0 100 10ns/div 40 0 OFFSET CODE 18 250mA/div OUT1 -10 40 0 T (%/V) 40 MAX3600 toc17 0 240 6 0.4 -2 200 OFFSET INL 1.2 2 160 GAIN CODE OFFSET DNL 2.0 MAX3600 toc13 10 600 MAX3600 toc14 200 MAX3600 toc15 -10 0 MAX3600 toc18 -2 1k 10k 100k VCC FREQUENCY (Hz) 1M 10M 100 1k 10k 100k 1M VA FREQUENCY (Hz) 7 MAX3600 Typical Operating Characteristics (continued) (VCC = 3.3V, TA = +25NC, EN_MAIN high, unless otherwise noted. VC_ = VA_ - VOUT_.) Typical Operating Characteristics (continued) (VCC = 3.3V, TA = +25NC, EN_MAIN high, unless otherwise noted. VC_ = VA_ - VOUT_.) 100 OUT2 5 RISE TIME (ns) OUT3 OUT4 90 85 80 OUT1 75 VIDEO IS SQUARE WAVE: 3FFh (HIGH), 0 (LOW) 70 0 0.3 0.6 0.9 1.2 4 3 OUT4 OUT3 1 0.7 0.5 1.5 OUT2 OUT1 0.9 1.1 OUT4 3 1 OUT1 1.3 0.6 0.4 1.5 0.8 gs_ = 40h, os_ = FFh 5 3 OUT3 OUT2 2 OUTPUT FALL TIME vs. COMPLIANCE VOLTAGE (VA_ - VOUT_) 3.0 gs_ = FFh, os_ = 0 2.5 FALL TIME (ns) 4 1.0 VC_ (V) MAX3600 toc22 6 OUT2 OUT3 0 VC_ (V) OUTPUT FALL TIME vs. COMPLIANCE VOLTAGE (VA_ - VOUT_) FALL TIME (ns) 4 2 0 gs_ = FFh, os_ = 0 5 2 VC_ (V) 2.0 OUT2 OUT3 1.5 1.0 0.5 1 OUT1 OUT4 0 0.5 0.7 0.9 1.1 VC_ (V) 8 6 MAX3600 toc23 95 gs_ = 40h, os_ = FFh RISE TIME (ns) gs_ = FFh, os_ = 0 OUTPUT RISE TIME vs. COMPLIANCE VOLTAGE (VA_ - VOUT_) MAX3600 toc20 6 MAX3600 toc19 105 OUTPUT RISE TIME vs. COMPLIANCE VOLTAGE (VA_ - VOUT_) MAX3600 toc21 NORMALIZED OUTPUT CURRENT vs. COMPLIANCE VOLTAGE (VA_ - VOUT_) NORMALIZED AMPLITUDE (%) MAX3600 Laser Driver for Projectors 1.3 1.5 OUT4 OUT1 0 0.4 0.6 0.8 1.0 VC_ (V) 1.2 1.4 1.6 1.2 1.4 1.6 Laser Driver for Projectors PIN NAME 1 D0 2 D1 3 D2 4 D3 5 D4 6 D5 7 D6 8 D7 9 D8 MAX3600 Pin Description FUNCTION Synchronous Video Data Inputs. D0 is the LSB; D9 is the MSB. 10 D9 11 SYNC 12 CLK Video Clock Input 13 RES Reserved for Future Use. Leave open. 14 OUT3 15 VA3 Blue Laser Supply Voltage 16, 24, 32 VEE Ground Connections. Connect to 0V. 17 SDA Data I/O for Serial Port 18 Active-Low Chip Select 19 CS SCL 20 EN_MAIN 21 VEE_T 22 VA4 23 OUT4 Pixel Clock Input in Configuration 1. See the Typical Operating Circuits. Connect to Blue Laser Anode. If unused leave open. Available on the MAX3600/A/B only. Clock Input for Serial Port Laser Enable Input. When low, laser current is reduced (3.3V CMOS input with 60kI resistor to VEE). Test. Connect to VEE for normal operation. Noise Diode Supply Voltage Connect to Noise Diode Anode. If unused, leave open. Available on the MAX3600/A/G only. 25, 27, 29 VA2 26, 28, 30 OUT2 Green Laser Supply Voltage 31 N.C. No Connection. There is no connection from the package to the IC. 33 VM 34 VCCA Video Marker Input. 3.3V CMOS input with 60kI pullup to VCCD. 3.3V Analog Supply. Connect directly to VCCD. Connect to Green Laser Anode. If unused, leave open. Available on the MAX3600/A/G only. 35, 37 VA1 36 OUT1 Red Laser Supply Voltage Connect to Red Laser Anode. If unused, leave open. Available on the MAX3600/A/R only. 38 VCCD 39 REF 3.3V Digital Supply. Connect directly to VCCA. Reference Threshold Voltage for Synchronous Inputs 40 PO Periodic Off Video Data Input. If the periodic off feature is not used, connect the PO pin to ground through a resistor. For periodic off on every pixel, connect PO to VCC through a resistor. (RPO 2.2kI is suitable for all configurations. The resistor is optional, but reduces power.) -- EP Exposed Pad. The exposed pad must be connected to VEE. 9 MAX3600 Laser Driver for Projectors Detailed Description OUTPUT1, OUTPUT2, and OUTPUT3 support operation with red, green, and blue lasers. OUTPUT4 and the PRBS generator provide noise as required for certain synthetic green lasers. The MAX3600R (Figure 3), MAX3600G (Figure 4), and MAX3600B (Figure 5) are monochrome laser drivers. The laser driver for projectors supports video imaging with red, blue, and green lasers. Each output includes a 10-bit video DAC with programmable gain and offset. VIDEO BUFFERS REF CONTROL LOGIC VIDEO DEMULTIPLEXER VIDEO1 D0 0 1 D1 VSEL1 D2 D3 10 D4 D0:D9 MAX3600 MAX3600A VIDEO2 D5 D7 os2 gs2 EN2 D8 PERIODIC_OFF D6 D9 VIDEO OFFSET GAIN EN os1 gs1 EN1 fPIXEL VIDEO3 fCLK CLK CLK 0 SYNC SYNC 1 VIDEO OFFSET GAIN AND 0 1 fPIXEL VSEL3 OUT1 OUTPUT2 (GREEN) OUT2 OUTPUT3 (BLUE) OUT3 EN VIDEO OFFSET GAIN EN os3 gs3 EN3 OUTPUT1 (RED) CLK_SEL PERIODIC_OFF PO PO fPIXEL PRBS_N PO_M PRBS OSCILLATOR PO_M fPIXEL po_srt po_stp PO_DIS fPIXEL 0 fPRBS1 1 SDA SCL SERIAL PORT VEE PO GENERATOR 1 PRBS fPRBS PRBS_N PO_M PO_DIS po_stp po_srt OUT_EN1,2,3,4 VSEL1,3,4 gs1,2,3,4 os1,2,3,4 VM_EN1,2,3,4 0 VSEL4 PRBS GENERATOR PRBS_SEL CS EP VEE_T EN1 EN2 EN3 EN4 VIDEO OFFSET GAIN EN os4 gs4 EN4 ENABLE LOGIC (i = 1, 2, 3, 4) ENi AND OR PORi OUT_ENi 10 OUT4 EN_MAIN VM VM_ENi NOTE: LOWERCASE ITALICS INDICATE A CONTROL REGISTER, UPPERCASE ITALICS INDICATE AN INTERNAL SIGNAL, HEAVY LINE INDICATES PARALLEL DATA. Figure 2. MAX3600/MAX3600A Functional Diagram OUTPUT4 (NOISE) VCCA VCCD POR1 POR2 POR3 POR4 POWER-ON RESET VA1 VA2 VA3 VA4 +VCC +VCC +VRED +VGREEN +VBLUE +VNOISE Laser Driver for Projectors SYNC VCCA VA2 VIDEO BUFFERS D0 D2 VA1 D3 10 os1 gs1 EN1 D6 D7 D8 VIDEO OFFSET GAIN EN OUTPUT1 OUT1 VCCA VA1 MAX3600B D1 +VRED RED LASER D2 10 D4 D5 os3 gs3 EN3 D7 VA4 D8 VIDEO OFFSET GAIN EN OUTPUT3 +3.3V VA2 VA3 D3 D6 D9 OUT3 +VBLUE BLUE LASER D9 CLK CLK VEE_T, VEE REF CS SDA SCL SYNC VIDEO BUFFERS D0 VA4 D1 D5 +3.3V VA3 MAX3600R D4 PO CONTROL LOGIC SERIAL PORT VEE_T, VEE REF EP CS SDA SCL EN_MAIN VM NOTE: LOWERCASE ITALICS INDICATE A CONTROL REGISTER, UPPERCASE ITALICS INDICATE AN INTERNAL SIGNAL, HEAVY LINE INDICATES PARALLEL DATA. Figure 3. MAX3600R Functional Diagram EP SERIAL PORT CONTROL LOGIC EN_MAIN VM NOTE: LOWERCASE ITALICS INDICATE A CONTROL REGISTER, UPPERCASE ITALICS INDICATE AN INTERNAL SIGNAL, HEAVY LINE INDICATES PARALLEL DATA. Figure 5. MAX3600B Functional Diagram VCCD SYNC D0 VCCA VA1 VIDEO BUFFERS MAX3600G D1 +3.3V VA3 VA4 VA2 D2 D3 10 D4 D5 D6 D7 D8 D9 CLK OFFSET GAIN EN EN4 EN os4 gs4 REF PO VIDEO os2 gs2 EN2 OFFSET GAIN VIDEO OUTPUT2 OUTPUT4 OUT2 OUT4 +VGREEN GREEN LASER NOISE LASER EP PRBS NOISE GENERATOR CS SDA SCL SERIAL PORT CONTROL LOGIC VEE_T, VEE EN_MAIN VM NOTE: LOWERCASE ITALICS INDICATE A CONTROL REGISTER, UPPERCASE ITALICS INDICATE AN INTERNAL SIGNAL, HEAVY LINE INDICATES PARALLEL DATA. Figure 4. MAX3600G Functional Diagram 11 MAX3600 VCCD VCCD PO MAX3600 Laser Driver for Projectors Equation 1: Video Input Buffers The synchronous video data inputs (D0 to D9, SYNC, x os VIDEO GHIGH x gs OS CLK, and PO) are pseudo-differential. Each input is com-= -I OUT + GLOW + HIGH + OS LOW 3FFh FFh FFh pared to VREF, as shown in Figure 6. D0 to D9, PO, and SYNC can be left open. SYNC can be connected to REF if not used (for reduced power consumption). Video Demultiplexer The video demultiplexer (Figure 7) can accommodate configurations as shown in the Typical Operating Circuits. In Configuration 1 (Figure 19), 10-bit red, green, and blue video data is time multiplexed. The SYNC signal is used to demultiplex the video data. In Configuration 2 (Figure 21), each output driver uses VIDEO2 as a data source. where: * Current into the laser driver is positive (out is negative) * VIDEO is the 10-bit video input * gs is the 8-bit gain setting register * os is the 8-bit offset setting register * GLOW is the minimum gain (mA) * (GLOW + GHIGH) is the maximum gain (mA) * OSHIGH is the maximum offset (mA) * OSLOW is the minimum offset (mA) Driver Outputs The output compliance voltage (VC_ = VA_ - VOUT_, Figure 9) defines the output voltage required to obtain low overshoot and fast settling time. The transfer characteristic of the driver outputs is shown in Figure 10 and Equation 1. Table 2 summarizes the typical output current capability for each driver output. Table 3 summarizes the maximum ratings for each driver output. Table 2. Driver Output Typical Parameter Summary Table 3. Driver Output Absolute Maximum Ratings (Current Out of Part) The driver outputs provide currents to the lasers as shown in Figure 8. PARAMETER OUT1 (mA) OUT2 (mA) OUT3 (mA) OUT4 (mA) Minimum Gain (GLOW) 12 40 10 10 Maximum Gain (GLOW + GHIGH) 227 690 170 185 Maximum Offset (OSHIGH) 83 83 83 155 VDDQ/2 VDDQ OUT1 (mA) OUT2 (mA) OUT3 (mA) OUT4 (mA) DC Current (TJ = +125NC) 320 735 245 310 DC Current (TJ = +110NC) 480 1100 382 465 Peak Current (t < 1Fs, TJ = +125NC) 640 1470 490 620 PARAMETER REF VIDEO BUFFER VIDEO PROCESSOR VIDEO DATA (LVCMOS) Figure 6. Video Inputs 12 RTT RT D0-D9, CLK, PO, 2RTT SYNC RTT MAX3600 MAX3600A MAX3600R MAX3600G MAX3600B Laser Driver for Projectors D +VCC IOUT (A) Q VIDEO1 Q VA 0 D VC = VA - VOUT LASER DRIVER OUT VC (V) D Q MAX3600 VIDEO DEMULTIPLEXER VIDEO2 VA - VOUT IOUT Q 0 TIME D D VIDEO3 Figure 9. Output Compliance Voltage Q D DATA TO OUTPUT CHARACTERISTIC IOUT D9:D0 CLK 0 fPIXEL D SYNC Q 1 GAIN OFFSET CLK_SEL CLOCK ON BOTH EDGES (DDR) 0 CLOCK ON RISING EDGE Figure 7. Video Demultiplexer VIDEO 3FFh GAIN CHARACTERISTIC IOUT VA_ DRIVER OUTPUTS GAIN (8-BIT) GAIN DAC VIDEO (10-BIT) OFFSET (8-BIT) 0 FFh 1 0 0 IDAC VIDEO 3FFh OFFSET CHARACTERISTIC IOUT OFFSET DAC EN OUT_ Figure 8. Driver Output ) G LOW gs_ = 0 (GAIN = GLOW) VIDEO DAC 0 IN (GA REFERENCE 1 0 = gs_ H+ IG = GH OSHIGH os_ = FFh (OFFSET = osHIGH) OSLOW os_ = 0 (OFFSET = osLOW) 0 VIDEO 3FFh Figure 10. Data to Output Characteristics 13 Control Logic The control logic provides video selection, laser enable, and power savings. Video Selection The video demultiplexer creates signals VIDEO1, VIDEO2, and VIDEO3. The VSEL[1/3/4] bits can be used to select the input video for OUTPUT1, OUTPUT3, and OUTPUT4. Laser Control When EN_MAIN is low, all driver outputs are off. This signal works asynchronously (no clock is required to disable outputs). The video marker (VM) input can be used to disable selected outputs when a video signal is not present (Figure 11). The VM_EN[1:4] bit settings determine which outputs respond to the VM signal. Propagation delay from VM or EN_MAIN to output active is typically 35ns + 2/fPIXEL. Periodic Off Generator The periodic off (PO) generator quickly switches off OUTPUT2. The PO event is placed within a pixel if PO is set high during a pixel as shown in Figure 12. The PO event location within the pixel is programmed from the serial port. Each pixel is divided into "m" equal time subpixels as shown in Figure 13. The PO_M setting determines the number of subpixels, where: m = (PO_M +1) x 8 The PO start and PO stop locations (in subpixels) are defined by the P1, P1S, P2, and P2S bits. Start Subpixel = [(P1 + 1) MOD (PO_M + 1)] x 8 + P1S + 1 Stop Subpixel = [(P2 + 1) MOD (PO_M + 1)] x 8 + P2S + 1 The start and stop locations should be selected to ensure that the PO event occurs > one rise/fall time from the pixel update. The minimum off-time is four subpixels. Select P1, P2 P PO_M. The PO oscillator frequency (fPO) = fPIXEL x (PO_M + 1). The intended operating range for fPO is 133MHz to 200MHz. OUT2 (GREEN LASER CURRENT) VIDEO AREA VM = 1 VERTICAL SCAN MAX3600 Laser Driver for Projectors PO EVENT NONVIDEO AREA (VM = 0) SELECTED OUTPUTS DISABLED PO PIXEL 1 PIXEL 2 PIXEL 3 PIXEL 4 1 0 1 0 TIME HORIZONTAL SCAN Figure 11. Video Marker 14 Figure 12. Periodic Off (PO) Example Laser Driver for Projectors PO START SUBPIXEL PRBS Oscillator PO STOP 1 . . . . . . . . . m 1 . . . . . . . . . m PO VIDEO2 1 1 PIXEL 1 PIXEL 2 PRBS Generator TIME Figure 13. PO Subpixels PO_M PRBS_N Output 4 can be used to generate random noise. A 32-bit shift register with feedback generates pseudorandom codes. The PRBS_SEL bit selects the PRBS clock source. Serial Port and Registers Table 4. PO Subpixel Programming tPIXEL (ns) The PRBS oscillator creates clock fPRBS1, which can be input to the PRBS generator. The oscillator frequency is determined by the PRBS_N bit setting as shown in Table 5. The recommended range for fPRBS1 is 100MHz to 150MHz. Note that the PRBS oscillator is not phaselocked to the pixel clock. Therefore, OUT4 updates are not synchronous to the pixel clock when the PRBS oscillator is used. SUBPIXELS (m) fPRBS1 (MHz) 10 1 3 16 136 12 1 2 16 125 14 1 0 16 129 16 2 3 24 128 18 2 2 24 125 20 2 1 24 120 22 2 0 24 123 24 3 2 32 125 26 4 3 40 131 28 4 3 40 121 30 4 2 40 125 32 4 1 40 125 34 5 3 48 120 36 5 2 48 125 38 6 3 56 125 40 6 3 56 119 The serial port provides a 3-wire interface with bidirectional data (SDA), clock input (SCL), and a chip-select input (CS) as shown in Figure 14. Table 6 shows the register addresses. The external master initiates a data transfer by asserting the CS pin. Write Mode (R/W = 0): The master generates 16 clock cycles. It outputs 16 bits (MSB first) to the SDA line at the falling edge of the clock. The master ends the transmission by setting CS high. The laser driver updates control registers on the rising clock edge of the last data bit. Read Mode (R/W = 1): The master generates 16 clock cycles. It outputs 8 bits (MSB first) to the SDA line at the falling edge of the clock. The SDA line is released after the R/W bit has been transmitted. The slave outputs 8 bits of data (MSB first) at the rising edge of the clock. The master ends the transmission by setting the CS pin high. Read clock speed is determined by the external pullup resistor and parasitic capacitance at the SDA pin. Table 5. PRBS Oscillator PRBS_N fPRBS1/fPO 0 0.9 1 0.8 2 0.75 3 0.68 15 MAX3600 IOUT2 MAX3600 Laser Driver for Projectors WRITE MODE CS tT tL tCH SCL 0 1 2 SDA A6 3 4 5 6 7 A3 A2 A1 A0 R/W 8 9 10 11 12 13 14 D7 D6 D5 D4 D3 D2 D1 15 tDS tCL A5 A4 tDH D0 MSB LSB READ MODE CS tL tT tCH SCL 0 1 2 SDA A6 3 4 5 6 7 8 9 tDS tCL A5 A4 10 11 12 13 14 15 tD A3 A2 A1 R/W A0 D7 D6 D5 D4 D3 D2 D1 D0 tDH Figure 14. Serial Port Timing Diagram Table 6. Register Map ADDRESS NAME DESCRIPTION BIT 7 00h os1 OUTPUT1 Offset MSB BIT 6 BIT 5 BIT 4 LSB 01h gs1 OUTPUT1 Gain MSB LSB 02h os2 OUTPUT2 Offset MSB LSB 03h gs2 OUTPUT2 Gain MSB LSB 04h os3 OUTPUT3 Offset MSB LSB 05h gs3 OUTPUT3 Gain MSB LSB 06h os4 OUTPUT4 Offset MSB LSB 07h gs4 OUTPUT4 Gain MSB Enable OUT_ EN1 OUT_ EN2 OUT_ EN3 OUT_ EN4 VM_EN1 VM_EN2 VM_EN3 VM_EN4 Video Data Control X X X VSEL1 VSEL3 VSEL4 PRBS_ SEL CLK_ SEL BIT 2 BIT 1 BIT 0 LSB 08h enable 09h cnfig 0Ah osc Oscillator X X PRBS_N MSB PRBS_N LSB PO_DIS PO_M MSB PO_M PO_M LSB 0Bh po_srt PO Start Subpixels X X P1 MSB P1 P1 LSB P1S MSB P1S P1S LSB 0Ch po_stp PO Stop Subpixels X X P2 MSB P2 P2 LSB P2S MSB P2S P2S LSB Note: Registers default to (0) at power-on (unless a different default value is noted). 16 BIT 3 Laser Driver for Projectors BIT NAME DEFAULT 7:5 X 0 Unused. 4 VSEL1 0 Video select for OUTPUT1. 0 = VIDEO1, 1 = VIDEO2. 3 VSEL3 0 Video select for OUTPUT3. 0 = VIDEO3, 1 = VIDEO2. 2 VSEL4 0 Video select for OUTPUT4. 0 = PRBS, 1 = VIDEO2. 1 PRBS_SEL 0 PRBS clock source select. 1 = fPRBS1, 0 = fPIXEL. 0 CLK_SEL 1 Pixel clock source select. 0 = CLK pin, 1 = SYNC pin. MAX3600 Table 7. cnfig Register Bit Description DESCRIPTION Table 8. osc Register Bit Description BIT NAME DEFAULT DESCRIPTION 7:6 X 0 Unused. 5:4 PRBS_N 0 PRBS oscillator configuration. See Table 5. Bit 5 is the MSB, and bit 4 is the LSB. 3 PO_DIS 0 Disables the output of the PO pulse generator. When the value is 1, no PO pulses are created. 2:0 PO_M 1 PO oscillator control. See Table 4. Bit 2 is the MSB, and bit 0 is the LSB. Table 9. po_srt Register Bit Description BIT NAME DEFAULT 7:6 X 0 Unused. DESCRIPTION 5:3 P1 1 These bits contain the P1 parameter used to program the PO start subpixel. 2:0 P1S 4 These bits contain the P1S parameter used to program the PO start subpixel. Table 10. po_stp Register Bit Description BIT NAME DEFAULT 7:6 X 0 Unused. DESCRIPTION 5:3 P2 0 These bits contain the P2 parameter used to program the PO stop subpixel. 2:0 P2S 1 These bits contain the P2S parameter used to program the PO stop subpixel. 17 Laser Driver for Projectors MAX3600 Power-On-Reset POWER-ON RESET VCCA VPOR1 VA1 AND POR1 AND POR2 VPOR2 VA2 The power-on reset monitors the supply voltages of the circuit (Figure 15). It is recommended that VCC be applied to the IC before VA1 to VA4 are applied as shown in Figure 16. On power-down, it is recommended that VA1 to VA4 are powered down before VCC. Failure to follow the sequencing recommendation can result in device stress, but has not been observed to cause immediate damage. Design Procedure Supply Filter VPOR2 VA3 AND POR3 AND POR4 VPOR3 VA4 VPOR2 Element CA (see the Typical Operating Circuits) is present to reduce supply noise and provide a ground return path for switched current. Select CA R 10FF. CA can be composed of two or three capacitors in parallel. Use care to ensure VA3 does not exceed +9V at any time, including power-on, as this can damage the ESD protection circuitry. Compensation Network Optional compensation elements RC and CC can be used to compensate the inductive load of the laser (Figure 17). The resulting filter reduces ringing and increases the switching time of the laser driver. The best values for RC and CC should be found by experimentation. Note that CC must be charged before light output appears from the laser. If a compensation network is used, minimize inductance in the ground return. Figure 15. Power-On Reset VOLTS DATA AND CLOCK INPUTS VA_ Typical starting values: tVCC_ON (0.1s) RC RL to 2 x RL (RL = Laser Resistance) CC 1/(2G fVIDEO x RL) VCC Ringing of the green laser can be reduced with resistor RD. TIME Figure 16. Power-Supply Sequencing LASER DRIVER +VA_ VA_ RD LASER OUT_ CC RC Figure 17. Optional Compensation Components 18 CA PCB Layout Place the green laser as close to the laser driver as possible. The green laser typically has a small resistive component and is more sensitive to inductance than other laser connections. The green laser connection should appear as a low-impedance transmission line. Use wide traces located close to the ground plane for maximum capacitance. The connection from OUT2 to the laser should be as short as possible, ideally < 1cm. The connection distance from the laser cathode, across the ground plane, through the filter capacitor, to VA2, is ideally < 1cm. Laser Driver for Projectors It is best to solder the laser to the PCB. If a connector is required, minimize inductance. Inductance > 10nH at OUT2 could cause large ringing. When routing OUTPUT1 and OUTPUT2, route connections to the VA_ pins on the top layer, and connect the OUT_ pins to the laser through vias. Laser Driver Thermal Considerations The circuit is designed to meet specifications with an operating junction temperature (TJ) up to +125NC. The junction temperature is estimated by: TJ [(ICC)(VCC) + C (IVA_)(VC_)] BJA + TA The recommended thermal path is through the package backside exposed pad (EP). A heatsink on the package top does not significantly reduce junction Table 11. Thermal Design Properties SYMBOL VALUE Ambient Temperature PARAMETER TA -- Operating Junction Temperature TJ P +125NC Thermal Resistance, Junction-to-Case BJC +2NC/W Thermal Resistance, Junction-to-Ambient, Multilayer Board BJA-2 +28NC/W temperature. Recommendations for PCB design are found in Application Note 862: HFAN-08.1: Thermal Considerations of QFN and Other Exposed-Paddle Packages. Applications Information Connecting OUT2 and OUT4 It is possible to connect OUT4 and OUT2 to achieve a higher output current. There is a small delay on OUT4 relative to OUT2. Note that OUT4 linearity performance is lower than OUT2 linearity. Eye Safety Specification IEC 825 defines the maximum safe output of optical devices. This laser driver provides enable features that aid compliance with IEC 825. Using this laser driver alone does not ensure that a product is compliant with IEC 825. The entire transmitter circuit and component selections must be considered. Maxim products are not designed for use as components in systems where the failure of a Maxim product could create a situation where injury could occur. IOUT 50% SETTLING TIME ISWITCH IFINAL TIME Figure 18. Settling Time and Measurement Note: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. 19 MAX3600 Consider the power supply on the VA_ pins. Droop on these pins reduces the compliance voltage. Use two or three capacitors to bypass VA_ to ground. Place a small capacitor close to the VA2 pin to keep the ground return loop small. A larger capacitor can be located farther from VA_. Laser Driver for Projectors MAX3600 Typical Operating Circuits ENABLE (3.3V CMOS) VIDEO CLOCK (3.3V CMOS) VIDEO SYNC (CMOS) VIDEO (CMOS) GREEN OFF* (CMOS) EN_MAIN CLK SYNC D0-D9 PO LASER DRIVER 10 MAX3600 MAX3600A +1.8V TO +3.3V VDDQ +VRED VA1 CA1 RED LASER OUT1 CC1 RC1 +VNOISE +VGREEN VA4 VA2 CC2 CA2 RC2 CA3 RD2 REF VIDEO PROCESSOR OUT2 OUT4 GREEN LASER +VBLUE VA3 VIDEO MARKER* (3.3V CMOS) CHIP SELECT (3.3V CMOS) SERIAL DATA (3.3V CMOS) SERIAL CLOCK (3.3V CMOS) VM CS SDA SCL VEE_T VEE EP CA4 BLUE LASER OUT3 CC3 RC3 VCCA VCCD +3.3V (VCC) 0.1F *GREEN OFF AND VIDEO MARKER SIGNALS ARE OPTIONAL. Figure 19. Typical Operating Circuit: Configuration 1 Configuration 1: RGB Laser Driver with DDR Clock Configuration 1 is described in Figures 19 and 20 and Table 12. * 10-bit video (D0 = LSB, D9 = MSB), DDR clock * Data is multiplexed R-G-B (Figure 20) PIXEL R G B R G B R SYNC 0 0 1 0 0 1 0 PO 0 1 0 0 0 0 0 tH tSU CLK Table 12. Configuration 1 Register Settings BIT SETTING VSEL1 0 VIDEO1 a red laser VSEL3 0 VIDEO3 a blue laser VSEL4 0 PRBS a noise diode CLK_SEL 1 DDR clock with SYNC OUT_EN[1:4] 1 Enable outputs NOTES Note: See the Detailed Description section for more information about register programming. 20 PIXEL 2 (WITHOUT PO EVENT) D0-D9 * SYNC = 1 when blue data is on D0 to D9 * PO event occurs when PO = 1 PIXEL 1 (WITH PO EVENT) VIDEO1 R R VIDEO2 G G VIDEO3 B B R = RED DATA, G = GREEN DATA, B = BLUE DATA. Figure 20. Configuration 1: Video Data Format Laser Driver for Projectors +VDDQ 10 D0-D9 VDDQ/2 CHIP-SELECT RED (3.3V CMOS) VIDEO MARKER RED (3.3V CMOS) 10 CLOCK GREEN (CMOS) MAX3600R D0-D9 CHIP-SELECT GREEN (3.3V CMOS) GREEN OFF (3.3V CMOS) VIDEO MARKER GREEN (3.3V CMOS) 10 RPO VEE_T, VEE EP CLOCK BLUE (CMOS) CHIP-SELECT BLUE (3.3V CMOS) VIDEO MARKER BLUE (3.3V CMOS) CC2 RD2 RC2 GREEN LASER OUT2 NOISE DIODE OUT4 VEE_T, VEE EP VCCA, VCCD VA3 +VCC +VBLUE VA1 VA2 VA4 LASER DRIVER 3 CLK VDDQ/2 +VCC +VGREEN +VNOISE MAX3600G SYNC REF CS SERIAL PORT, EN_MAIN PO VM D0-D9 RED LASER PO OUT1 OUT2 OUT4 VIDEO BLUE (CMOS) +VRED OUT1 VCCA, VCCD VA2 VA4 VA1 LASER DRIVER 2 VA3 CLK VDDQ/2 VA1 VA2 VA4 VA3 LASER DRIVER 1 SYNC REF SERIAL PORT, EN_MAIN CS VM OUT1 OUT3 OUT4 VIDEO PROCESSOR +VCC VCCA, VCCD CLK CLOCK RED (CMOS) VIDEO GREEN (CMOS) OUT2 OUT3 OUT4 MAX3600 POWER ENABLE (3.3V CMOS) SERIAL DATA (3.3V CMOS) SERIAL CLOCK (3.3V CMOS) VIDEO RED (CMOS) MAX3600B BLUE LASER OUT3 SYNC REF SERIAL PORT, EN_MAIN CS VM RPO PO VEE_T, VEE EP Figure 21. Typical Operating Circuit: Configuration 2 Table 13. Configuration 2 Register Settings Configuration 2: Video Data with RZ Clock Configuration 2 is described in Figures 21 and 22 and Table 13. * 10-bit video (D0 = LSB, D9 = MSB) * Return-to-zero clock *V ideo data is always routed to VIDEO2, for constant delay from clock to output * Achieves highest possible resolution LDD BIT VALUE 1 VSEL1 1 VIDEO2 a red laser NOTES 1 OUT_EN1 1 Enable OUT1 1, 2, 3 CLK_SEL 0 Select RZ clock 2 OUT_EN2, OUT_EN4 1 Enable OUT2, OUT4 3 VSEL3 1 VIDEO2 a blue laser 3 OUT_EN3 1 Enable OUT3 Note: See the Detailed Description section for more information about register settings. 21 tSU tH CLK V V V 20 EN_MAIN VEE 32 19 SCL VM 33 18 CS VA1 37 VCCD 38 16 VEE 15 VA3 14 OUT3 13 RES *EP + REF 39 12 CLK 11 SYNC 4 5 6 D5 3 D4 2 D3 1 D2 PO 40 D1 Figure 22. Configuration 2: Video Data Format 17 SDA MAX3600 MAX3600A MAX3600R MAX3600G MAX3600B VA1 35 OUT1 36 V = VIDEO DATA. VEE_T 30 29 28 27 26 25 24 23 22 21 N.C. 31 VCCA 34 VIDEO2 VA4 V 7 8 9 10 D9 V OUT4 V D8 V VEE D0-D9 TOP VIEW D7 0 D6 0 OUT2 0 VA2 1 OUT2 PO VA2 Pin Configuration PIXEL WITHOUT PO PIXEL WITHOUT PO PIXEL WITHOUT PO VA2 PIXEL WITH PO OUT2 PIXEL D0 MAX3600 Laser Driver for Projectors THIN QFN (5mm x 5mm) *EXPOSED PAD. Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. 22 PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 40 TQFN-EP T4055+2 21-0140 90-0002 Laser Driver for Projectors REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 7/09 Initial release -- 1 10/09 Corrected errors for SCL in Figure 14 16 8/10 Removed future status from the MAX3600A in the Ordering Information table; added the soldering temperature to the Absolute Maximum Ratings section; in the Electrical Characteristics table updated the analog supply voltage and analog supply current values, added compliance voltage, updated maximum offset values, and added propagation delay; corrected the equation in Note 3; corrected the units for VD in Table 1; replaced Figure 7; added the land pattern no. to the Package Information table 2 1-5, 13, 22 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2010 Maxim Integrated Products 23 Maxim is a registered trademark of Maxim Integrated Products, Inc. MAX3600 Revision History