Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced
AMSOP-77
Monolithic
ULTRA LOW OFFSET VOLTAGE OPERATIONAL AMPLIFIER
Systems
FEATURES
APPLICATIONS
Outstanding Linearity
High-Gain Instrumentation
Low V
OS
overTemperature....................... 55
V Max
Precision Data Acquisition
Excellent V
OS
Drift............................ 0.6
V/
C Max
Precision Integrators
Ultra High Gain...............................5000V/mV Min
Precision Threshold Detectors
High PSRR..........................................3
V/V Max
Biomedical Amplifiers
Low Power Consumption.........................60mW Max
GENERAL DESCRIPTION
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
OPERATING
8 LEAD SOIC
8 LEAD PDIP
TEMPERATURE RANGE
25
V AMSOP-77ES
AMSOP-77EP
0 to 70
C
60
V AMSOP-77FS
AMSOP-77FP
0 to 70
C
100
V AMSOP-77GS
AMSOP-77GP
0 to 70
C
PIN CONNECTIONS
8 Lead SOIC/ 8Lead PDIP
Top View
1
2
8
4
3
7
5
6
OUT
N/C
V+
V
OS
TRIM
-IN
+IN
V
OS
TRIM
V-
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMSOP-77
ABSOLUTE MAXIMUM RATINGS
(Note1)
Supply Voltage
22V
Storage temperature
-65
C to +125
C
Differential Input Voltage
30V
Junction Temperature
+150
C
Input Voltage
22V
Soldering information (60 sec)
300
C
Output Short Circuit Duration
Indefinite
Thermal Resistance
Operating Temperature Range
0
C to70
C
8 L SOIC
158
C/W
8 L PDIP
103
C/W
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at V
IN
=
15V and T
A
= +25C unless otherwise specified.
Parameter
Conditions
AMSOP-77E
AMSOP-77F
AMSOP-77G
Units
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Input Offset Voltage
10
25
20
60
50
100
V
Long Term V
OS
Stability
(Note 2)
0.3
0.4
0.4
V/Mo
Input Offset Current
0.3
1.5
0.3
2.8
0.3
2.8
nA
Input Bias Current
-0.2
1.2
2.0
-0.2
1.2
2.8
-0.2
1.2
2.8
nA
Input Noise Voltage
0.1Hz to 10Hz
0.35
0.6
0.38
0.65
0.38
0.65
V
P-P
Input Noise Voltage
Density
f
O
= 10Hz
f
O
= 100Hz (Note 3)
f
O
= 1000Hz
10.3
10.0
9.6
18.0
13.0
11.0
10.5
10.2
9.8
20.0
13.5
11.5
10.5
10.3
9.8
20.0
13.5
11.5
nV/
Hz
Input Noise Current
0.1Hz to 10Hz
14
30
15
35
15
35
pA
P-P
Input Noise Current
Density
f
O
= 10Hz
f
O
= 100Hz (Note 3)
f
O
= 1000Hz
0.32
0.14
0.12
0.80
0.23
0.17
0.35
0.15
0.13
0.90
0.27
0.18
0.35
0.15
0.13
0.90
0.27
0.18
pA/
Hz
Input Resistance
Differential-Mode
(Note 4)
26
45
18.5
45
18.5
45
M
Input Resistance
Common-Mode
200
200
200
G
Input Voltage Range
13
14
13
14
13
14
V
Common-Mode
Rejection Ratio
V
CM
=
13
0.1
1.0
0.1
1.6
0.1
1.6
V/V
Power Supply
Rejection Ratio
V
S
=
13 to
18
0.7
3.0
0.7
3.0
0.7
3.0
V/V
Large-Signal
Voltage Gain
R
L
2k
, V
O
=
10V
5000
12000
2000
6000
2000
6000
V/mV
Output Voltage
Swing
R
L
10k
R
L
2k
R
L
1k
13.5
12.5
12.0
14.0
13.0
12.5
13.5
12.5
12.0
14.0
13.0
12.5
13.5
12.5
12.0
14.0
13.0
12.5
V
Slew Rate
R
L
2k
(Note 3)
0.1
0.3
0.1
0.3
0.1
0.3
V/
s
Closed-Loop
Bandwidth
A
VCL
=+1
(Note 3)
0.4
0.6
0.4
0.6
0.4
0.6
MHz
Open-Loop Output
Resistance
V
O
= 0, I
O
= 0
60
60
60
Power Consumption
V
S
=
15V, No Load
V
S
=
3V, No Load
50
3.5
60
4.5
50
3.5
60
4.5
50
3.5
60
4.5
mW
Offset Adjustment
Range
R
P
=20k
3
3
3
mV
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMSOP-77
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at V
IN
=
15, 0C
T
A
+70C unless otherwise specified.
Parameter
Conditions
AMSOP-77E
AMSOP-77F
AMSOP-77G
Units
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Input Offset Voltage
10
55
20
100
80
150
V
Average Input Offset
Voltage Drift
(Note 3)
0.3
0.6
0.4
1.0
0.7
1.2
V/
C
Input Offset Current
0.5
2.2
0.5
4.5
0.5
4.5
nA
Average Input Offset
Current Drift
(Note 5)
1.5
40
1.5
85
1.5
85
pA/
C
Input Bias Current
-0.2
2.4
4.0
-0.2
2.4
6.0
-0.2
2.4
6.0
nA
Average Input Bias
Current Drift
(Note 5)
8
40
15
60
15
60
pA/
C
Input Voltage Range
13.0
13.5
13.0
13.5
13.0
13.5
V
Common-Mode
Rejection Ratio
V
CM
=
13
0.1
1.0
0.1
3.0
0.1
3.0
V/V
Power Supply
Rejection Ratio
V
S
=
13 to
18
1.0
3.0
1.0
5.0
1.0
5.0
V/V
Large-Signal
Voltage Gain
R
L
2k
, V
O
=
10V
2000
6000
1000
4000
1000
4000
V/mV
Output Voltage
Swing
R
L
2k
12.0
13.0
12.0
13.0
12.0
13.0
V
Power Consumption
V
S
=
15V, No Load
60
75
60
75
60
75
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 2.5
V. Parameter is sample tested.
Note 3:
Sample tested
Note 4:
Guaranteed by design.
Note 5:
Guaranteed by end-point limits.
TYPICAL PERFORMANCE CHARACTERISTICS
Input Bias Current vs
Differrential Input Voltage
DIFFERENTIAL INPUT VALUE (V)
NONINVERTING INPUT BIAS
CURRENT (mA)
V
S
= 15V
-30
-20
-10
0
10
20
30
AT | V
DIFF
|
1.0V, | IB |
7nA (OP-07C)
0
40
25
10
85
OPEN-LOOP GAIN (V/
V)
Open-Loop Gain vs Temperature
TEMPERATURE ( C)
15
5
-40
0
-30
-20
-10
0
10
20
30
-30
-20
-10
0
10
20
30
INVERTING INPUT BIAS
20
1.5
2
4
-1
3.5
ABSOLUTE CHANGE IN INPUT
OFFSET VOLTAGE (
V)
Warm-UpDrift
TIME AFTER POWER SUPPLY TURN-ON (minutes)
1
-2
0.5
-4
2
V
S
= 15V
V
S
= 15V
0
2.5
T
A
= 25 C
T
A
= 25 C
1
3
-3
0
3
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMSOP-77
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
0
1
4
-50
0
50
100
TEMPERATURE ( C)
Input Bias Current vs Temperature
INPUT BIAS CURRENT (
nA)
2
3
FREQUENCY (Hz)
PEAK-TO-PEAK AMPLITUEDE (V)
0
32
Maximum Output Swing vs
Frequency
16
12
4
100k
1M
1k
10k
8
24
20
0
10
15
16
20
OPEN-LOOP GAIN (V/
V)
Open-Loop Gain vs Power
Supply Voltage
POWER SUPPLY VOLTAGE (V)
8
4
5
0
0
0.5
1.0
2.0
-50
0
50
100
TEMPERATURE ( C)
Input Offset Current vs Temperature
INPUT OFFSET CURRENT (
nA)
1.5
-40
0
120
0
1
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
Open-Loop Frequency Response
OPEN-LOOP GAIN (dB)
40
80
0
5
20
100
1k
10k
LOAD RESISTANCE TO GROUND (
)
Maximum Output Voltage vs
Load Resistance
MAXIMUM OUTPUT VOLTAGE (V)
10
15
12
0
50
85
100
ABSOLUTE VALUE OF OFFSET
VOLTAGE (
V)
Untrimmed Offset Voltage vs
Temperature
TEMPERATURE ( C)
50
25
-50
0
75
15
20
40
0
1
2
3
4
TIME FROM OUTPUT BEING SHORTED (minutes)
Output Short-Circuit Current vs
Time
OUTPUT SHORT-CIRCUIT
CURRENT (mA)
25
30
V
S
= 15V
V
S
= 15V
T
A
= 25 C
V
S
= 15V
T
A
= 25 C
V
S
= 15V
T
A
= 25 C
V
S
= 15V
T
A
= 25 C
V
S
= 15V
R
S
= 100
V
IN
= 10mV
POSITIVE SWING
NEGATIVE SWING
OP-77G
OP-77E
R
L
= 2k
28
V
S
= 15V
T
A
= 25 C
35
OP-77F
+I
SC
- I
SC
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMSOP-77
TYPICAL APPLICATIONS
Precision High-Gain Differential Amplifier
TYPE
AMOUNT
COMMON-MODE VOLTAGE
0.01%/V
GAIN LINEARITY, WORST CASE
0.02%
TCV
OS
0.008%/
C
TCI
OS
0.008%/
C
Bilateral Current Source
Basic Current Source
100mA current Source
These current sources will supply both positive and negative current into a grounded load.
Note that
R1
R3
R2
R4
R5
1
R2
R4
R5
Z
O
-
+
+
=
and that for Z
O
to be indefinite,
R1
R3
must
R2
R4
R5
=
+
.
OP-77E
+
-
R2
1k
0.1
F
-15V
+15V
1k
R4
1M
4
6
7
2
3
0.1
F
1M
R3
R1
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.
For the best CMR,
R4
R3
equal
must
R2
1
R
. In this example, with a
10mV differential signal, the maximum errors are as listed.
OP-77
+
-
1k
100k
I
OUT
15mA
100k
990
6
2
3
R4
R5
10
R3
R1
R2
V
IN
OP-77
+
-
I
OUT
100mA
6
2
3
R4
R5
R3
R1
R2
V
IN
50
-15V
2N2907
2N2222
+15V
R5
*
R1
R3
V
I
IN
OUT
=
GIVEN R3= R4+R5, R1=R2
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMSOP-77
TYPICAL APPLICATIONS (Continued)
Precision Current Sinks
Positive Current Sink
Positive current Source
These simple high current sinks require that the load float between the power
supply and the sink. In these circuits, OP-77's high gain, high CMRR, and low
TCV
OS
assure high accuracy.
Precision Absolute Value Amplifier
The high gain and low TCVOS assure accurate operation with inputs from microvolts
to volts. In this circuit, this signal always appears as a common-mode signal to the op
amps. The OP-77E CMRR of 1
V/V assures errors of less than 2ppm.
Low Noise Precision Reference
This circuit relies upon OP-77's low TCV
OS
and noise combined with very high CMRR,
to provide precision buffering of the averaged REF-01 voltage outputs.
OP-77
+
-
R
L
200
IRF520
R1
1
V+
V
IN
I
O
R1
V
I
IN
O
=
0V
V
IN
FULL SCALE OF 1V,
I
O
= 1A/V
OP-77
+
-
R1
200
IRF520
R
L
V
IN
I
O
V-
R1
V
I
IN
O
=
0V
V
IN
OP-77E
+
-
0.1
F
-15V
+15V
R3
2k
4
6
7
2
3
0.1
F
1k
OP-77E
+
-
0.1
F
-15V
+15V
4
6
7
2
3
0.1
F
1k
V
OUT
0< V
OUT
<10V
C1
30pF
D1
1N4148
2N4393
D2
2
6
4
V
O
REF-01
2
6
4
V
O
REF-01
2
6
4
V
O
REF-01
100k
100k
100k
OP-77
+
-
V
OUT
0.1
F
+15V
10
F
+
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMSOP-77
PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.
8 LEAD SOIC PLASTIC PACKAGE (S)
8 LEAD PLASTIC DIP PACKAGE (P)
0-8 TYP
0.010-0.020
(0.254-0.508)
S (SO-8 ) AMS DRW# 042293
x 45
0.016-0.050
(0.406-1.270)
0.008-0.010
(0.203-0.254)
0.004-0.010
(0.101-0.254)
0.014-0.019
(0.355-0.483)
0.053-0.069
(1.346-1.752)
0.050
(1.270)
TYP
0.150-0.157**
(3.810-3.988)
0.228-0.244
(5.791-6.197)
0.189-0.197*
(4.801-5.004)
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
1
2
3
4
8
7
6
5
0.045-0.065
(1.143-1.651)
0.2550.015*
(6.4770.381)
0.400*
(10.160)
MAX
1
2
3
4
8
7
6
5
0.1300.005
(3.3020.127)
0.0180.003
(0.4570.076)
0.1000.010
(2.5400.254)
(
8.255
)
+0.635
-0.381
0.325 +0.025
-0.015
0.009-0.015
(0.229-0.381)
0.300-0.325
(7.620-8.255)
0.065
(1.651)
TYP
0.005
(0.127)
MIN
0.125
(3.175)
MIN
0.015
(0.380)
MIN
*DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTUSIONS.
MOLD FLASH OR PROTUSIONS SHALL NOT EXCEED 0.010" (0.254mm)
P (8L PDIP ) AMS DRW# 042294
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