Datasheet AMSOP-77GS, AMSOP-77GP, AMSOP-77FS, AMSOP-77FP, AMSOP-77ES Datasheet (ADMOS)

Advanced AMSOP-77
Monolithic ULTRA LOW OFFSET VOLTAGE OPERATIONAL AMPLIFIER
Systems

FEATURES APPLICATIONS

•• Outstanding Linearity •• High-Gain Instrumentation

•• Low V

•• Excellent V

•• Ultra High Gain………………………….5000V/mV Min •• Precision Threshold Detectors

•• High PSRR……………………………………3µµV/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.

overTemperature.…………………. 55µµV Max •• Precision Data Acquisition

OS

Drift………………………. 0.6µµV/°°C Max •• Precision Integrators

OS

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

TEMPERATURE RANGE

0 to 70° C
0 to 70° C
0 to 70° C

±25µV

±60µV

±100µV

8 LEAD SOIC 8 LEAD PDIP
AMSOP-77ES AMSOP-77EP
AMSOP-77FS AMSOP-77FP
AMSOP-77GS AMSOP-77GP

PIN CONNECTIONS

8 Lead SOIC/ 8Lead PDIP

VOS TRIM

+IN

-IN

1
2
3
4

V-

8

VOS TRIM

7

V+
6 OUT
5

N/C

Top View

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]

AMSOP-77

ABSOLUTE MAXIMUM RATINGS (Note1)

Supply Voltage
Differential Input Voltage
Input Voltage

±22V

±30V
±22V

Output Short Circuit Duration Indefinite Thermal Resistance
Operating Temperature Range

0°C to70°C

Storage temperature
Junction Temperature
Soldering information (60 sec)

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 VIN =±15V and TA = +25°C 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
Long Term V

Stability
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

Input Noise Voltage
Density

Input Noise Current 0.1Hz to 10Hz 14 30 15 35 15 35 pA
Input Noise Current

Density

Input Resistance
Differential-Mode

Input Resistance
Common-Mode

Input Voltage Range

OS

(Note 2) 0.3 0.4 0.4

0.1Hz to 10Hz 0.35 0.6 0.38 0.65 0.38 0.65
fO = 10Hz

fO = 100Hz (Note 3)
fO = 1000Hz

fO = 10Hz
fO = 100Hz (Note 3)
fO = 1000Hz

(Note 4) 26 45 18.5 45 18.5 45

± 13 ± 14 ± 13 ± 14 ± 13 ± 14

10.3

10.0

9.6

0.32

0.14

0.12

200 200 200

18.0

13.0

11.0

0.80

0.23

0.17

10.5

10.2

9.8

0.35

0.15

0.13

20.0

13.5

11.5

0.90

0.27

0.18

10.5

10.3

9.8

0.35

0.15

0.13

20.0

13.5

11.5

0.90

0.27

0.18

µV

µV/Mo

µV

nV/√Hz

pA/√Hz

MΩ

GΩ

V

P-P

P-P

Common-Mode
Rejection Ratio

Power Supply
Rejection Ratio

Large-Signal
Voltage Gain

Output Voltage
Swing

Slew Rate
Closed-Loop

Bandwidth
Open-Loop Output

Resistance
Power Consumption

Offset Adjustment
Range

VCM = ± 13

VS = ± 13 to ± 18

RL≥2kΩ, VO =± 10V

RL ≥10kΩ
RL ≥2kΩ
RL ≥1kΩ

RL ≥2kΩ (Note 3)
A

=+1

VCL

(Note 3)
VO = 0, IO= 0 60 60 60

VS =± 15V, No Load
VS =± 3V, No Load

RP =20kΩ ± 3 ± 3 ± 3

5000 12000 2000 6000 2000 6000 V/mV

± 13.5
± 12.5
± 12.0

0.1 0.3 0.1 0.3 0.1 0.3

0.4 0.6 0.4 0.6 0.4 0.6 MHz

0.1 1.0 0.1 1.6 0.1 1.6

0.7 3.0 0.7 3.0 0.7 3.0

± 14.0
± 13.0
± 12.5

50

3.5

60

4.5

± 13.5
± 12.5
± 12.0

± 14.0
± 13.0
± 12.5

50

3.5

60

4.5

± 13.5
± 12.5
± 12.0

± 14.0
± 13.0
± 12.5

50

3.5

60

4.5

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µV/V

µV/V

V

V/µs

Ω

mW

mV

AMSOP-77

INVERTING INPUT BIAS

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at VIN= ±15, 0°C ≤ TA ≤ +70°C 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
Average Input Offset

Voltage Drift
Input Offset Current 0.5 2.2 0.5 4.5 0.5 4.5 nA

Average Input Offset
Current Drift

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
Input Voltage Range

Common-Mode
Rejection Ratio

Power Supply
Rejection Ratio

Large-Signal
Voltage Gain

(Note 3) 0.3 0.6 0.4 1.0 0.7 1.2

(Note 5) 1.5 40 1.5 85 1.5 85

(Note 5) 8 40 15 60 15 60

± 13.0 ± 13.5 ± 13.0 ± 13.5 ± 13.0 ± 13.5

VCM = ± 13

VS = ± 13 to ± 18

RL≥2kΩ, VO =± 10V

2000 6000 1000 4000 1000 4000 V/mV

0.1 1.0 0.1 3.0 0.1 3.0

1.0 3.0 1.0 5.0 1.0 5.0

µV

µV/°C

pA/°C

pA/°C

V

µV/V

µV/V

Output Voltage
Swing

Power Consumption

RL ≥2kΩ ± 12.0 ± 13.0 ± 12.0 ± 13.0 ± 12.0 ± 13.0

VS = ± 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

during the first 30 operating days are typically 2.5µV. Parameter is sample tested.

OS

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

VS = ±15V

20

15

10

5

OPEN-LOOP GAIN (V/µV)

0

-40

0 40

TEMPERATURE (° C)

Warm-UpDrift

4
3
2
1
0

-1

-2

OFFSET VOLTAGE (µV)

-3

ABSOLUTE CHANGE IN INPUT

-4

0.5

85

TIME AFTER POWER SUPPLY TURN-ON (minutes)

0 2.5

1.5 2

1 3

TA = 25° C

VS = ±15V

NONINVERTING INPUT BIAS

3.5

Input Bias Current vs
Differrential Input Voltage

30

AT | V

| ≤ 1.0V, | IB | ≤ 7nA (OP-07C)

DIFF

20

10

0

CURRENT (mA)

-10

-20

-30

-30 -20 -10 0 10 20 30
DIFFERENTIAL INPUT VALUE (V)

VS = ±15V

TA = 25° C

V

-30

-20

-10

0

10

20

30

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TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

AMSOP-77

Input Bias Current vs Temperature

4

VS = ±15V VS = ±15V

3

2

1

INPUT BIAS CURRENT (nA)

0

-50 0 50 100
TEMPERATURE (° C)

Open-Loop Frequency Response

120

80

40

0

OPEN-LOOP GAIN (dB)

-40
0 1 10 100 1k 10k 100k 1M 10M

FREQUENCY (Hz)

VS = ±15V

TA = 25° C

Input Offset Current vs Temperature

2.0

1.5

1.0

0.5

INPUT OFFSET CURRENT (nA)

-50 0 50 100
TEMPERATURE (° C)

Maximum Output Swing vs
Frequency

32

28

VS = ±15V

TA = 25° C

24

20

16

12

8
4

PEAK-TO-PEAK AMPLITUEDE (V)

0

1k 10k

100k

FREQUENCY (Hz)

1M

Open-Loop Gain vs Power
Supply Voltage

16

TA = 25° C
RL = 2kΩ

12

8

4

OPEN-LOOP GAIN (V/µV)

00

0 ±10 ±15

±5

POWER SUPPLY VOLTAGE (V)

Maximum Output Voltage vs
Load Resistance

20

VS = ±15V

TA = 25° C

15

10

VIN = ±10mV

POSITIVE SWING

NEGATIVE SWING

5

MAXIMUM OUTPUT VOLTAGE (V)

0

100 1k 10k

LOAD RESISTANCE TO GROUND (Ω)

±20

Output Short-Circuit Current vs
Time

40

VS = ±15V

TA = 25° C

35

30

25

CURRENT (mA)

+I

SC

- I

SC

20

OUTPUT SHORT-CIRCUIT

15

0 1 2 3 4

TIME FROM OUTPUT BEING SHORTED (minutes)

ABSOLUTE VALUE OF OFFSET

Untrimmed Offset Voltage vs
Temperature

85

VS = ±15V

75

RS = 100Ω

50

VOLTAGE (µV)

25

0

-50
TEMPERATURE (° C)

OP-77E

0 50

OP-77G

OP-77F

100

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TYPICAL APPLICATIONS

Precision High-Gain Differential Amplifier

+15V

R1

1kΩ

R3

1kΩ

R4
1MΩ

2

3

­OP-77E

+

7

4

-15V

0.1µF

0.1µF

AMSOP-77

R2

1MΩ

The high gain, gain linearity, CMRR, low TCVOS of the OP-77 make
it possible to obtain performance not previously available in single

6

stage very high-gain amplifier applications.

For the best CMR,

1R

R2

R3

equalmust

. In this example, with a

R4

10mV differential signal, the maximum errors are as listed.

TYPE AMOUNT
COMMON-MODE VOLTAGE 0.01%/V
GAIN LINEARITY, WORST CASE 0.02%
TCV
TCI

OS

OS

0.008%/°C

0.008%/°C

Basic Current Source 100mA current Source

Bilateral Current Source

R3

1kΩ

V

IN

R1

100kΩ

R2

100kΩ

2

­OP-77

3

+

R4

990Ω

6

R5

10Ω

I

≤ 15mA

OUT

V

These current sources will supply both positive and negative current into a grounded load.

R4





1

R5

+





Note that

R2





ZO

= and that for ZO to be indefinite,

R2

R3

R4R5

+

−

R1

R4R5=+

R2

R3

must

.

R1

R3

+15V

IN

R1

R2

2

­OP-77

3

+

R4

50Ω

6

2N2222

2N2907

R5

-15V

GIVEN R3= R4+R5, R1=R2

I

OUT

R3

V I INOUT =

R5*R1

≤ 100mA

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]

TYPICAL APPLICATIONS (Continued)

AMSOP-77

Positive Current Sink Positive current Source

Precision Current Sinks

V+

R

L

I

V

IN

+

OP-77

-

200Ω

O

IRF520

R1
1Ω

V

IN

I

O =

R1

0V VIN ≥

FULL SCALE OF 1V,
IO = 1A/V

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
TCVOS assure high accuracy.

Precision Absolute Value Amplifier

1kΩ

+15V

2

3

­OP-77E

+

-15V

0.1µF

7

6

4

0.1µF

C1
30pFD11N4148

2N4393

D2

R3
2kΩ

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 1µV/V assures errors of less than 2ppm.

2

3

V

IN

­OP-77E

+

+15V

-15V

R1

+

OP-77

-

1kΩ

0.1µF

7

6

4

0.1µF

200Ω

V
0< V

IRF520

I

O

R

L

V-

OUT

<10V

OUT

V

IN

I

O =

R1

0V VIN ≤

Low Noise Precision Reference

+15V

+

10µF

REF-01

2

6

V

O

4

REF-01

2

6

V

O

4

REF-01

2

6

V

O

4

100kΩ
100kΩ
100kΩ

0.1µF

­OP-77

+

V

OUT

This circuit relies upon OP-77’s low TCVOS and noise combined with very high CMRR,
to provide precision buffering of the averaged REF-01 voltage outputs.

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]

PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.

8 LEAD SOIC PLASTIC PACKAGE (S)

0.189-0.197*

(4.801-5.004)

8 7 6 5

AMSOP-77

0.050

(1.270)

TYP

0.150-0.157**

(3.810-3.988)

0.004-0.010

(0.101-0.254)

0.228-0.244

(5.791-6.197)

1 2 3 4

0.053-0.069

(1.346-1.752)

0.014-0.019

(0.355-0.483)

*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

8 LEAD PLASTIC DIP PACKAGE (P)

0.400*

(10.160)

MAX

8 7 6 5

0.008-0.010

(0.203-0.254)

0.010-0.020
(0.254-0.508)

0.016-0.050

(0.406-1.270)

x 45°

0°-8° TYP

S (SO-8 ) AMS DRW# 042293

0.255±0.015*

(6.477±0.381)

1 2 3 4

0.045-0.065

(1.143-1.651)

0.065

(1.651)

TYP

0.005

(0.127)

MIN

0.100±0.010

(2.540±0.254)

*DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTUSIONS.
MOLD FLASH OR PROTUSIONS SHALL NOT EXCEED 0.010" (0.254mm)

0.130±0.005

(3.302±0.127)

(3.175)

0.018±0.003

(0.457±0.076)

0.125

MIN

0.015

(0.380)

MIN

0.300-0.325

(7.620-8.255)

0.009-0.015

(0.229-0.381)

+0.025

0.325

-0.015

+0.635

(8.255 )

-0.381

P (8L PDIP ) AMS DRW# 042294

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]