The AMSOP-77 is a precision operational amplifier with an ultra low input offset voltage. This device features a wide input
voltage range of
±13V
minimum, low input bias current, high impedance, high PSRR, high CMRR, excellent stability of
offsets and gain over time and temperature. Exceptional gain linearity eliminates incorrectable system nonlinearities common
in previous monolithic op amps, and provides superior performance in high closed-loop gain applications.
Low cost, low noise, low offsets and high open-loop gain make the AMSOP-77 an excellent choice particularly for high-gain
instrumentation applications. Other applications include precision data acquisition, precision integrators, threshold detectors
and medical instrumentation.
The AMSOP-77 is operational in the commercial temperature range of 0°C to 70°C and is available in the 8 lead SOIC and
plastic dip (PDIP) packages.
ORDERING INFORMATION
:
TOL.
PACKAGE TYPE
8 LEAD PDIP
AMSOP-77EP
AMSOP-77FP
AMSOP-77GP
8 LEAD SOIC
±25µV
AMSOP-77ES
±60µV
AMSOP-77FS
±100µV
AMSOP-77GS
OPERATING
TEMPERATURE RANGE
0 to 70° C
0 to 70° C
0 to 70° C
PIN CONNECTIONS
8 Lead SOIC/ 8Lead PDIP
V
OS
TRIM
-IN
+IN
1
2
3
8 V
OS
TRIM
7 V+
6 OUT
5 N/C
V- 4
Top View
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMSOP-77
ABSOLUTE MAXIMUM RATINGS
(Note1)
Supply Voltage
Differential Input Voltage
Input Voltage
Output Short Circuit Duration
Operating Temperature Range
±22V
±30V
±22V
Indefinite
0°C to70°C
Storage temperature
Junction Temperature
Soldering information (60 sec)
Thermal Resistance
8 L SOIC
8 L PDIP
-65°C to +125°C
+150°C
300°C
158°C/W
103°C/W
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at V
IN
=±15V and T
A
= +25°C unless otherwise specified.
Parameter
Conditions
AMSOP-77E
AMSOP-77F
Min
Typ
Max
Min
Typ
Max
Input Offset Voltage
Long Term V
OS
Stability
Input Offset Current
Input Bias Current
Input Noise Voltage
Input Noise Voltage
Density
Input Noise Current
Input Noise Current
Density
Input Resistance
Differential-Mode
Input Resistance
Common-Mode
Input Voltage Range
Common-Mode
Rejection Ratio
Power Supply
Rejection Ratio
Large-Signal
Voltage Gain
Output Voltage
Swing
V
CM
=
±
13
V
S
=
±
13 to
±
18
R
L
≥2kΩ,
V
O
=± 10V
R
L
≥10kΩ
R
L
≥2kΩ
R
L
≥1kΩ
R
L
≥2kΩ
(Note 3)
A
VCL
=+1
(Note 3)
V
O
= 0, I
O
= 0
V
S
=± 15V, No Load
V
S
=± 3V, No Load
R
P
=20kΩ
5000
±
13.5
±
12.5
±
12.0
0.1
0.4
±
13
0.1Hz to 10Hz
f
O
= 10Hz
f
O
= 100Hz (Note 3)
f
O
= 1000Hz
0.1Hz to 10Hz
f
O
= 10Hz
f
O
= 100Hz (Note 3)
f
O
= 1000Hz
(Note 4)
26
-0.2
(Note 2)
10
0.3
0.3
1.2
0.35
10.3
10.0
9.6
14
0.32
0.14
0.12
45
200
±
14
0.1
0.7
12000
±
14.0
±
13.0
±
12.5
0.3
0.6
60
50
3.5
±
3
60
4.5
1.0
3.0
2000
±
13.5
±
12.5
±
12.0
0.1
0.4
±
13
1.5
2.0
0.6
18.0
13.0
11.0
30
0.80
0.23
0.17
18.5
-0.2
25
20
0.4
0.3
1.2
0.38
10.5
10.2
9.8
15
0.35
0.15
0.13
45
200
±
14
0.1
0.7
6000
±
14.0
±
13.0
±
12.5
0.3
0.6
60
50
3.5
±
3
60
4.5
1.6
3.0
2000
±
13.5
±
12.5
±
12.0
0.1
0.4
±
13
2.8
2.8
0.65
20.0
13.5
11.5
35
0.90
0.27
0.18
18.5
-0.2
60
AMSOP-77G
Min
Typ
Max
50
0.4
0.3
1.2
0.38
10.5
10.3
9.8
15
0.35
0.15
0.13
45
200
±
14
0.1
0.7
6000
±
14.0
±
13.0
±
12.5
0.3
0.6
60
50
3.5
±
3
60
4.5
1.6
3.0
2.8
2.8
0.65
20.0
13.5
11.5
35
0.90
0.27
0.18
100
Units
µV
µV/Mo
nA
nA
µV
P-P
nV/√Hz
pA
P-P
pA/√Hz
MΩ
GΩ
V
µV/V
µV/V
V/mV
V
Slew Rate
Closed-Loop
Bandwidth
Open-Loop Output
Resistance
Power Consumption
Offset Adjustment
Range
V/µs
MHz
Ω
mW
mV
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMSOP-77
Electrical Characteristics at V
IN
=
±15,
0°C
≤
T
A
≤
+70°C unless otherwise specified.
Parameter
Conditions
AMSOP-77E
AMSOP-77F
Min
Typ
Max
Min
Typ
Max
Input Offset Voltage
Average Input Offset
Voltage Drift
Input Offset Current
Average Input Offset
Current Drift
Input Bias Current
Average Input Bias
Current Drift
Input Voltage Range
Common-Mode
Rejection Ratio
Power Supply
Rejection Ratio
Large-Signal
Voltage Gain
Output Voltage
Swing
Power Consumption
V
CM
=
±
13
V
S
=
±
13 to
±
18
R
L
≥2kΩ,
V
O
=± 10V
R
L
≥2kΩ
V
S
=
±
15V, No Load
2000
±
12.0
(Note 5)
±
13.0
(Note 5)
-0.2
(Note 3)
10
0.3
0.5
1.5
2.4
8
±
13.5
0.1
1.0
6000
±
13.0
60
75
1.0
3.0
1000
±
12.0
55
0.6
2.2
40
4.0
40
±
13.0
-0.2
20
0.4
0.5
1.5
2.4
15
±
13.5
0.1
1.0
4000
±
13.0
60
75
3.0
5.0
1000
±
12.0
100
1.0
4.5
85
6.0
60
±
13.0
-0.2
ELECTRICAL CHARACTERISTICS
AMSOP-77G
Min
Typ
Max
80
0.7
0.5
1.5
2.4
15
±
13.5
0.1
1.0
4000
±
13.0
60
75
3.0
5.0
150
1.2
4.5
85
6.0
60
Units
µV
µV/°C
nA
pA/°C
nA
pA/°C
V
µV/V
µV/V
V/mV
V
mW
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics
.
The
guaranteed specifications apply only for the test conditions listed.
Note 2:
Long-Term Input Offset Voltage Stability refers to the averaged trend line of VOS vs. Time over extended periods after the first 30 days of operation.
Excluding the initial hour of operation, changes in V
OS
during the first 30 operating days are typically 2.5µV. Parameter is sample tested.
Note 3:
Sample tested
Note 4:
Guaranteed by design.
Note 5:
Guaranteed by end-point limits.
TYPICAL PERFORMANCE CHARACTERISTICS
Open-Loop Gain vs Temperature
25
ABSOLUTE CHANGE IN INPUT
OFFSET VOLTAGE (µV)
OPEN-LOOP GAIN (V/µV)
V
S
= ±15V
Warm-UpDrift
4
3
2
1
0
-1
-2
-3
-4
T
A
= 25° C
V
S
= ±15V
Input Bias Current vs
Differrential Input Voltage
30
NONINVERTING INPUT BIAS
CURRENT (mA)
20
10
0
-10
-20
V
S
= ±15V
T
A
= 25° C
AT | V
DIFF
|
≤
1.0V, | IB |
≤
7nA (OP-07C)
-30
INVERTING INPUT BIAS
-20
-10
0
10
20
20
15
10
5
0
-40
0
40
TEMPERATURE (° C)
85
0 0.5
1 1.5 2 2.5 3 3.5
TIME AFTER POWER SUPPLY TURN-ON (minutes)
-30
30
-30 -20 -10
0
10
20
30
DIFFERENTIAL INPUT VALUE (V)
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMSOP-77
TYPICAL PERFORMANCE CHARACTERISTICS
(Continued)
Input Bias Current vs Temperature
4
INPUT OFFSET CURRENT (nA)
V
S
= ±15V
Input Offset Current vs Temperature
2.0
V
S
= ±15V
Open-Loop Gain vs Power
Supply Voltage
16
OPEN-LOOP GAIN (V/µV)
T
A
= 25° C
R
L
= 2kΩ
INPUT BIAS CURRENT (nA)
3
1.5
12
2
1.0
8
1
0.5
4
0
-50
0
50
100
TEMPERATURE (° C)
0
-50
0
50
100
TEMPERATURE (° C)
0
0
±5
±10
±15
±20
POWER SUPPLY VOLTAGE (V)
Open-Loop Frequency Response
V
S
= ±15V
T
A
= 25° C
MAXIMUM OUTPUT VOLTAGE (V)
PEAK-TO-PEAK AMPLITUEDE (V)
120
OPEN-LOOP GAIN (dB)
32
28
24
20
16
12
8
4
0
Maximum Output Swing vs
Frequency
20
V
S
= ±15V
T
A
= 25° C
Maximum Output Voltage vs
Load Resistance
V
S
= ±15V
T
A
= 25° C
V
IN
= ±10mV
80
15
POSITIVE SWING
NEGATIVE SWING
40
10
0
5
-40
0
1
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
1k
10k
100k
FREQUENCY (Hz)
1M
0
100
1k
10k
LOAD RESISTANCE TO GROUND (Ω)
Output Short-Circuit Current vs
Time
40
OUTPUT SHORT-CIRCUIT
CURRENT (mA)
V
S
= ±15V
T
A
= 25° C
Untrimmed Offset Voltage vs
Temperature
85
ABSOLUTE VALUE OF OFFSET
VOLTAGE (µV)
75
V
S
= ±15V
R
S
= 100Ω
OP-77G
35
30
+I
SC
50
OP-77F
25
20
15
- I
SC
25
OP-77E
0
1
2
3
4
TIME FROM OUTPUT BEING SHORTED (minutes)
0
-50
0
50
TEMPERATURE (° C)
100
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMSOP-77
TYPICAL APPLICATIONS
Precision High-Gain Differential Amplifier
R2
+15V
0.1µF
R1
1kΩ
R3
1kΩ
R4
1MΩ
-15V
1MΩ
2
3
7
-
OP-77E
+
4
6
0.1µF
The high gain, gain linearity, CMRR, low TCV
OS
of the OP-77 make
it possible to obtain performance not previously available in single
stage very high-gain amplifier applications.
R1
R3
must equal
. In this example, with a
R2
R4
10mV differential signal, the maximum errors are as listed.
For the best CMR,
TYPE
COMMON-MODE VOLTAGE
GAIN LINEARITY, WORST CASE
TCV
OS
TCI
OS
AMOUNT
0.01%/V
0.02%
0.008%/°C
0.008%/°C
Bilateral Current Source
Basic Current Source
R3
1kΩ
R1
V
IN
100kΩ
R2
100kΩ
R4
990Ω
2
100mA current Source
R3
+15V
-
R1
6
R5
10Ω
I
OUT
≤
15mA
V
IN
R2
2
3
OP-77
3
+
-
OP-77
+
2N2222
6
50Ω
2N2907
R5
R4
-15V
R3
R1 * R5
I
OUT
≤
100mA
I
OUT
=
V
IN
GIVEN R3= R4+R5, R1=R2
These current sources will supply both positive and negative current into a grounded load.
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