January 22, 2002 1 MIC860
MIC860 Micrel
MIC860
Teeny™ Ultra Low Power Op Amp
Final Information
General Description
The MIC860 is a rail-to-rail output, operational amplifier in
Teeny
™ SC70 packaging. The MIC860 provides 4MHz
gain-bandwidth product while consuming an incredibly low
30µA supply current.
The SC70 packaging achieves significant board space sav-
ings over devices packaged in SOT-23 or MSOP-8 packag-
ing. The SC70 occupies approximately half the board area of
a SOT-23 package.
Features
•
Teeny
™ SC70 packaging
• 4MHz gain-bandwidth product
•30µA supply current
• Rail-to-Rail output
• Ground sensing at input common mode to GND
• Common mode to GND
• Drive large capactive loads
Applications
• Portable equipment
•PDAs
• Pagers
• Cordless Phones
• Consumer Electronics
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
Teeny
is a trademark of Micrel, Inc.
Ordering Information
Part Number Marking Ambient Temp. Range* Package
MIC860BC5 A32 –40°C to +85°C SC70-5
Pin Configuration
OUT V+
IN—IN+
13
45
2
V—
A32
Part
Identification
SC-70
Functional Pinout
OUT V+
IN—IN+
13
45
2
V—
MIC860 Micrel
MIC860 2 January 22, 2002
Absolute Maximum Ratings (Note 1)
Supply Voltage (VV+ – V–) .........................................+6.0V
Differentail Input Voltage (VIN+ – VIN–), Note 4......+6.0V
Input Voltage (VIN+ – VIN–).................. V+ + 0.3V, V– –0.3V
Lead Temperature (soldering, 5 sec.)....................... 260°C
Output Short Circuit Current Duration .................. Indefinite
Storage Temperature (TS) ........................................ 150°C
ESD Rating, Note 3
Operating Ratings (Note 2)
Supply Voltage (V+ – V–)........................ +2.43V to +5.25V
Ambient Temperature Range..................... –40°C to +85°C
Package Thermal Resistance ...............................450°C/W
Electrical Characteristics
V+ = +2.7V, V– = 0V, VCM = V+/2; RL= 500kΩ to V+/2; TA= 25°C, unless otherwise noted. Bold values indicate –40°C≤ TA≤ +85°C.
Symbol Parameter Condition Min Typ Max Units
VOS Input Offset Voltage –20 –515mV
–25 20 mV
Input Offset Voltage Temp Coefficient
20 µV/°C
IBInput Bias Current 20 pA
IOS Input Offset Current 10 pA
VCM Input Voltage Range CMRR > 60dB 11.8 V
CMRR Common-Mode Rejection Ratio 0 < VCM < 1.35V 38 76 dB
PSRR Power Supply Rejection Ratio Supply voltage change of 3V 40 78 dB
AVOL Large-Signal Voltage Gain RL = 5k, VOUT 2V peak to peak 50 66 dB
RL = 100k, VOUT 2V peak to peak 66 81 dB
RL = 500k, VOUT 2V peak to peak 76 91 dB
VOUT Maximum Output Voltage Swing RL = 5k
V+–70mV V+–34mV
V
RL = 500k
V+–2mV V+–0.7mV
V
VOUT Minimum Output Voltage Swing RL = 5k
V–+11mV V–+ 50mV
mV
RL = 500k
V–+0.2mV V–+ 2mV
mV
GBW Gain-Bandwidth Product 4 MHz
SR Slew Rate 3V/µs
ISC Short-Circuit Output Current Source 4.5 6mA
Sink 10 16 mA
ISSupply Current No Load 30 50 µA
V+= +5V, V–= 0V, VCM= V+/2; RL= 500kΩ to V+/2; TA= 25°C, unless otherwise noted. Bold values indicate –40°C≤ TA≤ +85°C.
VOS Input Offset Voltage –20 –520mV
Input Offset Voltage Temp Coefficient
20 µV/°C
IBInput Bias Current 20 pA
IOS Input Offset Current 10 pA
VCM Input Voltage Range CMRR > 60dB 3.5 4.2 V
CMRR Common-Mode Rejection Ratio 0 < VCM < 3.5V 44 77 dB
PSRR Power Supply Rejection Ratio Supply voltage change of 1V 40 79 dB
AVOL Large-Signal Voltage Gain RL = 5k, VOUT 4.8V peak to peak 52 66 dB
RL = 100k, VOUT 4.8V peak to peak 67 80 dB
RL = 500k, VOUT 4.8V peak to peak 75 90 dB
January 22, 2002 3 MIC860
MIC860 Micrel
Symbol Parameter Condition Min Typ Max Units
VOUT Maximum Output Voltage Swing RL = 5k
V+–75mV V+–37mV
V
RL = 500k
V+–35mV V+–4mV
V
VOUT Minimum Output Voltage Swing RL = 5k
V–+14mV V–+ 40mV
mV
RL = 500k
V–+0.4mV V–+ 5mV
mV
GBW Gain-Bandwidth Product 4 MHz
SR Slew Rate 3V/µs
ISC Short-Circuit Output Current Source 15 23 mA
Sink 30 47 mA
ISSupply Current No Load 33 55 µA
Note 1. Exceeding the absolute maximum rating may damage the device.
Note 2. The device is not guaranteed to function outside its operating rating.
Note 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Pin 4 is ESD sensetive
Note 4. Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is
likely to increase.
MIC860 Micrel
MIC860 4 January 22, 2002
Test Circuits
50½
RF
FET
PROBE FET
PROBE
0.1µF 10µF
0.1µF 10µF
VÐ
V+
20k
200k
MIC860
Test Circuit 1. AV = 10
50½
RF
FET
PROBE
0.1µF 10µF
R
L
5k
0.1µF 10µF
VÐ
V+
20k
20k
MIC860
FET
PROBE
Test Circuit 2:AV = 2
50½
RF
MIC860
FET
PROBE FET
PROBE
0.1µF 10µF
RL
5k
0.1µF 10µF
VÐ
V+
Test Circuit 3. AV = 1
170k
48k
10k 10k
10µF
0.1µF
10µF
50Ω
50Ω
100µF
0.1µF
10µF
100µF
All resistors:
1% metal film
Output
Input
V+
V—
MIC860
1
2
4
35
BNC
BNC
Test Circuit 5. Positive Power Supply Rejection Ratio Measurement
50½
FET
PROBE
FET
PROBE
0.1µF 10µF
50½
0.1µF 10µF
VÐ
RF
V+
20k
20k
MIC860
Test Circuit 4. AV = –1
January 22, 2002 5 MIC860
MIC860 Micrel
25
27
29
31
33
35
37
39
-40 -20 0 20 40 60 80 100
SUPPLY CURRENT (µA)
TEMPERATURE (°C)
Supply Current
vs. Temperature
5V
2.7V
-60
-50
-40
-30
-20
-10
0
-40 -20 0 20 40 60 80 100
SHORT CIRCUIT CURRENT (mA)
TEMPERATURE (°C)
Short Circuit Current (sink)
vs. Temperature
5V
2.7V
0
5
10
15
20
25
30
-40 -20 0 20 40 60 80 100
SHORT CIRCUIT CURRENT (mA)
TEMPERATURE (°C)
Short Circuit Current (source)
vs. Temperature
5V
2.7V
-6
-5.5
-5
-4.5
-4
-3.5
-3
-40 -20 0 20 40 60 80 100
OFFSET VOLTAGE (mV)
TEMPERATURE (°C)
Offset Voltage
vs. Temperature
5V
2.7V
Typical Characteristics
25
27
29
31
33
35
37
39
41
0.5 1 1.5 2 2.5 3
SUPPLY CURRENT (µA)
SUPPLY VOLTAGE (±V)
Supply Current vs.
Suppl
y
Volta
g
e
-40°C
+85°C
+25°C
V+ = 5V
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0 5 10 15 20 25 30
OUTPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
Output Voltage vs.
Output Current (Sourcing)
-40°C
+85°C
+25°C
V+ = 5V
0
1
2
3
4
5
6
0 102030405060
OUTPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
Output Voltage vs.
Output Current (Sinkin
g
)
-40°C
+85°C
+25°C
V+ = 5V 0
5
10
15
20
25
30
0 0.5 1 1.5 2 2.5 3
OUTPUT CURRENT (mA)
SUPPLY VOLTAGE (±V)
Short Circuit Current vs.
Suppl
y
Volta
g
e (Sourcin
g
)
-40°C
+85°C
+25°C
V+ = 5V 0
10
20
30
40
50
60
0 0.5 1 1.5 2 2.5 3
OUTPUT CURRENT (mA)
SUPPLY VOLTAGE (±V)
Short Circuit Current vs.
Suppl
y
Volta
g
e (Sinkin
g
)
-40°C
+85°C
+25°C
V+ = 5V
0
0.5
1
1.5
2
2.5
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
OFFSET VOLTAGE (mV)
COMMON-MODE VOLTAGE (V)
Offset Voltage vs.
Common-Mode Volta
g
e
-40°C
+85°C
+25°C
V+ = 5V
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
0 0.54 1.08 1.62 2.16 2.7
OFFSET VOLTAGE (mV)
COMMON-MODE VOLTAGE (V)
Offset Voltage vs.
Common-Mode Volta
g
e
-40°C
+85°C
+25°C
Supply = 2.7V
-0.5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
0.1 1 10 100 1000 10000
OUTPUT VOLTAGE (V)
RESISTIVE LOAD (kΩ)
Output Voltage Swing vs.
Resistive Load (Sinking)
VCC = 5V
VCC = 2.7V
MIC860 Micrel
MIC860 6 January 22, 2002
60
80
100
1 10 100 1000 10000
OPEN LOOP GAIN (dB)
RESISTIVE LOAD (kΩ)
Open Loop Gain vs.
Resistive Load
V
CC
= 2.7V
V
CC
= 5.0V
-0.5
0.5
1.5
2.5
3.5
4.5
5.5
0.1 1 10 100 1000 10000
OUTPUT VOLTAGE (V)
RESISTIVE LOAD (kΩ)
Output Voltage Swing vs.
Resistive Load
(
sourcin
g)
VCC = 5V
VCC = 2.7V
January 22, 2002 7 MIC860
MIC860 Micrel
-225
-180
-135
-90
-45
0
45
90
135
180
225
1x104
1x105
1x106
1x107
2x107
PHASE (°)
Unity Gain Frequency
Response
-25
-20
-15
-10
-5
0
5
10
15
20
25
GAIN (dB)
V
CC
= 5V
R
L
= 5kΩ
C
L
= 2pF
A
V
= 1
-225
-180
-135
-90
-45
0
45
90
135
180
225
1x10
4
1x10
5
1x10
6
1x10
7
2x10
7
PHASE (°)
Gain Bandwidth and
Phase Mar
g
in
-50
-40
-30
-20
-10
0
10
20
30
40
50
GAIN (dB)
V
CC
= 5V
A
V
= 10
R
L
= 1MΩ
C
L
= 2pF
-225
-180
-135
-90
-45
0
45
90
135
180
225
1x104
1x105
1x106
1x107
2x107
PHASE (°)
Gain Frequenc
y
Response
-25
-20
-15
-10
-5
0
5
10
15
20
25
GAIN (dB)
V
CC
= 5V
A
V
= 2
C
L
= 2pF
R
L
= 5kΩ
-225
-180
-135
-90
-45
0
45
90
135
180
225
1x10
4
1x10
5
1x10
6
1x10
7
2x10
7
PHASE (°)
Unity Gain Frequency
Response
-25
-20
-15
-10
-5
0
5
10
15
20
25
GAIN (dB)
V
CC
= 2.7V
R
L
= 5kΩ
C
L
= 2pF
A
V
= 1
0
0.5
1
1.5
2
2.5
3
3.5
4
1 10 100 1000
GAIN BANDWIDTH (MHz)
CAPACITIVE LOAD (pF)
Gain Bandwidth vs.
Capacitve Load
V
CC
= 5.0V
V
CC
= 2.7V
Note: To drive
capacitive load,
a 500Ω series
resistor would
help stablize
the circuit
Functional Characteristics
0
10
20
30
40
50
60
70
80
90
1x10
0
1x10
1
1x10
2
1x10
3
1x10
4
1x10
5
1x10
6
PSRR (dB)
FREQUENCY (Hz)
PSRR vs. Frequency
V
CC
= 2.7V
0
10
20
30
40
50
60
70
80
90
1x10
0
1x10
1
1x10
2
1x10
3
1x10
4
1x10
5
1x10
6
PSRR (dB)
FREQUENCY (Hz)
PSRR vs. Frequenc
y
V
CC
= 5V
MIC860 Micrel
MIC860 8 January 22, 2002
Smal Signal Response
Test Circuit 3: A
V
= 1
TIME 500ns/div
OUTPUT
50mV/div
A
V
= 1
V+ = 2.7V
C
L
= 50pF
R
L
= 500Ω
TIME 500ns/div
A
V
= 1
V+ = 5V
C
L
= 50pF
R
L
= 500Ω
Smal Signal Response
Test Circuit 3: A
V
= 1
OUTPUT
50mV/div
Small Signal Response
Test Circuit 3: A
V
= 1
TIME 500ns/div
A
V
= 1
V+ = 2.7V
C
L
= 2 pF
R
L
= 5kΩ
OUTPUT
50mV/div
Small Signal Response
Test Circuit 3: A
V
= 1
TIME 500ns/div
OUTPUT
50mV/div
A
V
= 1
V+ = 5V
C
L
= 2 pF
R
L
= 5kΩ
Small Signal Response
Test Circuit 3: A
V
= 1
TIME 500ns/div
A
V
= 1
V+ = 5V
C
L
= 50pF
R
L
= 5kΩ
OUTPUT
50mV/div
Small Signal Response
Test Circuit 3: A
V
= 1
TIME 500ns/div
A
V
= 1
V+ = 2.7V
C
L
= 50pF
R
L
= 5kΩ
OUTPUT
50mV/div
January 22, 2002 9 MIC860
MIC860 Micrel
TIME 500ns/div
A
V
= 1
V+ = 2.7V
C
L
= 2pF
R
L
= 1MΩ
Smal Signal Response
Test Circuit 3: A
V
= 1
OUTPUT
50mV/div
RL
CL
V+
V—
Small Signal Response
Test Circuit 4: A
V
= —1
AV = —1
V+= 2.7V
CL = 2pF
RL = 5kΩ
TIME 500ns/div
OUTPUT
50mV/div
Small Signal Response
Test Circuit 4: A
V
= —1
A
V
= —1
V+= 5V
C
L
= 2pF
R
L
= 1MΩ
TIME 500ns/div
OUTPUT
50mV/div
TIME 500ns/div
OUTPUT
50mV/div
Small Signal Response
Test Circuit 4: A
V
= -1
A
V
= -1
V+= 5V
C
L
= 2pF
R
L
= 5kΩ
Small Signal Response
Test Circuit 4: AV = —1
AV = —1
V+= 2.7V
CL = 2pF
RL = 1MΩ
TIME 500ns/div
OUTPUT
50mV/div
MIC860 Micrel
MIC860 10 January 22, 2002
TIME 250µs/div
Rail to Rail Output Operation
Test Circuit 2: A
V
= 2
A
V
= 2
V+ = 5V
C
L
= 2pF
R
L
= 1MΩ
OUTPUT
2V/div
∆V
P-P
= 5V
TIME 250µs/div
Rail to Rail Output Operation
Test Circuit 2: A
V
= 2
A
V
= 2
V+ = 2.7V
C
L
= 2pF
R
L
= 1MΩ
OUTPUT
1V/div
∆V
P-P
= 2.7V
∆V=2.84V
∆t = 700ns
Large Signal Pulse Response
Test Circuit 3: A
V
= 1
TIME 5µs/div
Rise Slew Rate = 4.1V/µs
Fall Slew Rate = 2.9V/µs
A
V
= 1
C
L
= 2pF
R
L
= 5kΩ
V
CC
= 5V
OUTPUT
50mV/div
TIME 250µs/div
Rail to Rail Output Operation
Test Circuit 2: A
V
= 2
A
V
= 2
V+ = 2.7V
C
L
= 2pF
R
L
= 1MΩ
OUTPUT
1V/div
∆V
P-P
= 2.7V
TIME 250µs/div
Rail to Rail Output Operation
Test Circuit 2: A
V
= 2
A
V
= 2
V+ = 5V
C
L
= 2pF
R
L
= 5kΩ
OUTPUT
2V/div
∆V
P-P
= 5V
TIME 250µs/div
Rail to Rail Output Operation
Test Circuit 2: AV = 2
A
V
= 2
V+ = 2.7V
C
L
= 2pF
R
L
= 5kΩ
OUTPUT
1V/div
∆V
P-P
= 2.7V
January 22, 2002 11 MIC860
MIC860 Micrel
∆V=730mV
∆t = 300ns
TIME 5µs/div
A
V
= 1
C
L
= 50pF
R
L
= 5kΩ
V
CC
= 2.7V
Large Signal Pulse Response
Test Circuit 3: A
V
= 1
Rise Slew Rate = 2.4V/µs
Fall Slew Rate = 4.7V/µs
OUTPUT
50mV/div
MIC860 Micrel
MIC860 12 January 22, 2002
Applications Information
Power Supply Bypassing
Regular supply bypassing techniques are recommended. A
10µF capacitor in parallel with a 0.1 µF capacitor on both the
positive and negative supplies are ideal. For best perfor-
mance all bypassing capacitors should be located as close to
the op amp as possible and all capacitors should be low ESL
(equivalent series inductance), ESR (equivalent series resis-
tance). Surface-mount ceramic capacitors are ideal.
Supply and Loading Considerations
The MIC860 is intended for single supply applications config-
ured with a grounded load. It is not advisable to operate the
MIC860 with either:
1). A grounded load and split supplies (+/-V) or
2). A single supply where the load is terminated above
ground.
Under the above conditions, if the load is less than 20kOhm
and the output swing is greater than 1V(peak), there may be
some instability when the output is sinking current.
January 22, 2002 13 MIC860
MIC860 Micrel
Package Information
0.30 (0.012)
0.10 (0.004)
2.20 (0.087)
1.80 (0.071)
2.40 (0.094)
1.80 (0.071)
1.35 (0.053)
1.15 (0.045)
0.65 (0.0256) BSC
1.00 (0.039)
0.80 (0.032)
0.10 (0.004)
0.00 (0.000)
DIMENSIONS:
MM (INCH)
0.30 (0.012)
0.15 (0.006)
0.18 (0.007)
0.10 (0.004)
1.10 (0.043)
0.80 (0.032)
SC70-5
MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc.
© 2002 Micrel Incorporated
