37-40 GHz GaAs MMIC Low Noise Amplifier AA038N3-00 Features Chip Outline Single Bias Supply Operation (5 V) 1.310 3.5 dB Typical Noise Figure at 38 GHz 1.225 13 dB Typical Small Signal Gain 0.25 m Ti/Pd/Au Gates 0.655 100% On-Wafer RF, DC and Noise Figure Testing Alpha's three-stage reactively-matched 37-40 GHz MMIC low noise amplifier has typical small signal gain of 13 dB with a typical noise figure of 3.5 dB at 38 GHz. The chip uses Alpha's proven 0.25 m low noise PHEMT technology, and is based upon MBE layers and electron beam lithography for the highest uniformity and repeatability. The FETs employ surface passivation to ensure a rugged reliable part with through-substrate via holes and gold-based backside metallization to facilitate a conductive epoxy die attach process. 1.610 1.525 1.283 Description 0.085 0.000 0.000 100% Visual Inspection to MIL-STD-883 MT 2010 Dimensions indicated in mm. All DC (V) pads are 0.1 x 0.1 mm and RF In, Out pads are 0.07 mm wide. Chip thickness = 0.1 mm. Absolute Maximum Ratings Characteristic Value Operating Temperature (TC) -55C to +90C Storage Temperature (TST) -65C to +150C Bias Voltage (VD) 6 VDC Power In (PIN) 10 dBm Junction Temperature (TJ) 175C Electrical Specifications at 25C Parameter Max. Unit 20 27 mA Symbol VD = 5 V IDS Small Signal Gain F = 37-40 GHz G Noise Figure F = 38 GHz NF 3.5 3.8 dB Input Return Loss F = 37-40 GHz RLI -12 -6 dB -6 Drain Current Min. Typ.3 Condition 10 13 dB Output Return Loss F = 37-40 GHz RLO -12 Output Power at 1 dB Gain Compression1 F = 38 GHz P1 dB 6 dBm JC 202 C/W Thermal Resistance2 dB 1. Not measured on a 100% basis. 2. Calculated value based on measurement of discrete FET. 3. Typical represents the median parameter value across the specified frequency range for the median chip. Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 8/00A 1 37-40 GHz GaAs MMIC Low Noise Amplifier AA038N3-00 Typical Performance Data Bias Arrangement 20 S-Parameters (dB) 15 S21 10 5 0 S22 -5 -10 -15 S11 -20 -25 S12 35 36 37 38 39 40 41 42 43 Frequency (GHz) Typical Small Signal Performance S-Parameters (VDS = 5 V) For biasing on, adjust VDS from zero to the desired value (5 V recommended). For biasing off, reverse the biasing on procedure. Circuit Schematic D Detail A VD RF IN 2 RF OUT Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 8/00A