ADMOS AMSOP-77EP Ultra low offset voltage operational amplifier Datasheet

Advanced
Monolithic
Systems
AMSOP-77
ULTRA LOW OFFSET VOLTAGE OPERATIONAL AMPLIFIER
RoHS compliant
FEATURES
APPLICATIONS
• Outstanding Linearity
• Low VOS overTemperature.…………………. 55µV Max
• Excellent VOS Drift………………………. 0.6µV/°C Max
• Ultra High Gain………………………….5000V/mV Min
• High PSRR……………………………………3µV/V Max
• Low Power Consumption…………………….60mW Max
• High-Gain Instrumentation
• Precision Data Acquisition
• Precision Integrators
• Precision Threshold Detectors
• Biomedical Amplifiers
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
8 LEAD SOIC
±25µV AMSOP-77ES
±60µV AMSOP-77FS
±100µV AMSOP-77GS
8 LEAD PDIP
AMSOP-77EP
AMSOP-77FP
AMSOP-77GP
OPERATING
TEMPERATURE RANGE
0 to 70° C
0 to 70° C
0 to 70° C
PIN CONNECTIONS
8 Lead SOIC/ 8Lead PDIP
VOS TRIM
1
8 VOS TRIM
-IN
2
7 V+
+IN
3
6 OUT
V- 4
5 N/C
Top View
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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 (25 sec)
Thermal Resistance
8 L SOIC
8 L PDIP
-65°C to +125°C
+150°C
265°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
Min
Typ
Max
Min
Typ
Max
Input Offset Voltage
Long Term VOS
Stability
10
(Note 2)
20
0.3
Input Offset Current
Input Bias Current
25
-0.2
AMSOP-77G
Min
Typ
Max
60
50
0.4
0.3
1.5
1.2
2.0
-0.2
100
2.8
1.2
2.8
-0.2
µV
µV/Mo
0.4
0.3
Units
0.3
2.8
nA
1.2
2.8
nA
Input Noise Voltage
0.1Hz to 10Hz
0.35
0.6
0.38
0.65
0.38
0.65
µVP-P
Input Noise Voltage
Density
fO = 10Hz
fO = 100Hz (Note 3)
fO = 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
pAP-P
Input Noise Current
Density
fO = 10Hz
fO = 100Hz (Note 3)
fO = 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
Input Resistance
Common-Mode
45
18.5
200
± 13
Input Voltage
Range
45
18.5
200
± 14
± 13
± 14
± 13
45
MΩ
200
GΩ
± 14
V
Common-Mode
Rejection Ratio
VCM = ± 13
0.1
1.0
0.1
1.6
0.1
1.6
µV/V
Power Supply
Rejection Ratio
VS = ± 13 to ± 18
0.7
3.0
0.7
3.0
0.7
3.0
µV/V
Large-Signal
Voltage Gain
RL≥2kΩ, VO =± 10V
5000
12000
2000
6000
2000
6000
V/mV
Output Voltage
Swing
RL ≥10kΩ
RL ≥2kΩ
RL ≥1kΩ
± 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
RL ≥2kΩ (Note 3)
0.1
0.3
0.1
0.3
0.1
0.3
V/µs
Closed-Loop
Bandwidth
AVCL =+1
(Note 3)
0.4
0.6
0.4
0.6
0.4
0.6
MHz
Open-Loop Output
Resistance
VO = 0, IO= 0
60
60
Ω
Power Consumption
VS =± 15V, No Load
VS =± 3V, No Load
50
3.5
Offset Adjustment
Range
RP =20kΩ
±3
Advanced Monolithic Systems, Inc.
60
60
4.5
www.advanced-monolithic.com
50
3.5
60
4.5
±3
Phone (925) 443-0722
50
3.5
60
4.5
±3
Fax (925) 443-0723
mW
mV
AMSOP-77
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at VIN= ±15, 0°C ≤ TA ≤ +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
(Note 3)
Input Offset Current
Average Input
Offset Current Drift
(Note 5)
Input Bias Current
-0.2
Average Input Bias
Current Drift
± 13.0
Units
10
55
20
100
80
150
µV
0.3
0.6
0.4
1.0
0.7
1.2
µV/°C
0.5
2.2
0.5
4.5
0.5
4.5
nA
1.5
40
1.5
85
1.5
85
pA/°C
2.4
4.0
2.4
6.0
2.4
6.0
nA
8
40
15
60
15
60
pA/°C
(Note 5)
Input Voltage
Range
AMSOP-77G
Min
Typ
Max
± 13.5
-0.2
± 13.0
± 13.5
-0.2
± 13.0
± 13.5
V
Common-Mode
Rejection Ratio
VCM = ± 13
0.1
1.0
0.1
3.0
0.1
3.0
µV/V
Power Supply
Rejection Ratio
VS = ± 13 to ± 18
1.0
3.0
1.0
5.0
1.0
5.0
µV/V
Large-Signal
Voltage Gain
RL≥2kΩ, VO =± 10V
2000
6000
1000
4000
1000
4000
V/mV
Output Voltage
Swing
RL ≥2kΩ
± 12.0
± 13.0
± 12.0
± 13.0
± 12.0
± 13.0
V
Power Consumption
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 VOS 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
4
VS = ±15V
20
15
10
5
-40
0
40
TEMPERATURE (° C)
85
Advanced Monolithic Systems, Inc.
3
30
TA = 25° C
VS = ±15V
2
1
0
-1
-2
-3
-4
0 0.5
1 1.5 2 2.5 3 3.5
TIME AFTER POWER SUPPLY TURN-ON (minutes)
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NONINVERTING INPUT BIAS
CURRENT (mA)
ABSOLUTE CHANGE IN INPUT
OFFSET VOLTAGE ( µV)
OPEN-LOOP GAIN (V/µV)
25
0
Input Bias Current vs
Differrential Input Voltage
Warm-UpDrift
AT | VDIFF | ≤ 1.0V, | IB | ≤ 7nA (OP-07C)
-30
20
-20
10
-10
0
0
-10
-20
10
VS = ±15V
TA = 25° C
20
-30
30
-30 -20 -10
0
10
20
30
DIFFERENTIAL INPUT VALUE (V)
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INVERTING INPUT BIAS
CURRENT (mA)
Open-Loop Gain vs Temperature
AMSOP-77
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Input Bias Current vs Temperature
2.0
3
2
1
0
-50
0
50
TEMPERATURE (° C)
16
VS = ±15V
OPEN-LOOP GAIN (V/µV)
INPUT OFFSET CURRENT ( nA)
INPUT BIAS CURRENT ( nA)
VS = ±15V
1.5
1.0
0.5
0
100
Open-Loop Frequency Response
32
PEAK-TO-PEAK AMPLITUEDE (V)
OPEN-LOOP GAIN (dB)
120
VS = ±15V
TA = 25° C
80
40
0
0
1
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
-50
4
0
28
24
20
16
12
8
4
0
1k
0
±10
±15
±20
±5
POWER SUPPLY VOLTAGE (V)
Maximum Output Voltage vs
Load Resistance
VS = ±15V
TA = 25° C
1M
10k
100k
FREQUENCY (Hz)
20
VS = ±15V
TA = 25° C
VIN = ±10mV
15
POSITIVE SWING
NEGATIVE SWING
10
5
0
100
1k
10k
LOAD RESISTANCE TO GROUND ( Ω)
Untrimmed Offset Voltage vs
Temperature
85
VS = ±15V
TA = 25° C
35
30
+ISC
- ISC
20
ABSOLUTE VALUE OF OFFSET
VOLTAGE (µV)
OUTPUT SHORT-CIRCUIT
CURRENT (mA)
8
Maximum Output Swing vs
Frequency
40
15
0
1
2
3
4
TIME FROM OUTPUT BEING SHORTED (minutes)
Advanced Monolithic Systems, Inc.
12
0
50
100
TEMPERATURE (° C)
Output Short-Circuit Current vs
Time
25
TA = 25° C
RL = 2kΩ
MAXIMUM OUTPUT VOLTAGE (V)
4
-40
Open-Loop Gain vs Power
Supply Voltage
Input Offset Current vs Temperature
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75
VS = ±15V
RS = 100Ω
OP-77G
OP-77F
50
25
OP-77E
0
-50
0
50
TEMPERATURE (° C)
Phone (925) 443-0722
100
Fax (925) 443-0723
AMSOP-77
TYPICAL APPLICATIONS
Precision High-Gain Differential Amplifier
R2
1MΩ
+15V
0.1µF
R1
2
1kΩ
R3
3
The high gain, gain linearity, CMRR, low TCVOS of the OP-77
make it possible to obtain performance not previously available in
single stage very high-gain amplifier applications.
7
OP-77E
+
4
1kΩ
6
0.1µF
R1
R3
must equal
. In this example, with a
R2
R4
10mV differential signal, the maximum errors are as listed.
For the best CMR,
R4
1MΩ
-15V
TYPE
AMOUNT
COMMON-MODE VOLTAGE
0.01%/V
GAIN LINEARITY, WORST CASE
0.02%
TCVOS
0.008%/°C
TCIOS
0.008%/°C
Bilateral Current Source
Basic Current Source
100mA current Source
R3
R3
+15V
1kΩ
R1
VIN
100kΩ
R2
2
R1
-
OP-77
3
+
6
VIN
R2
R5
10Ω
100kΩ
R4
990Ω
2
2N2222
-
OP-77
3
+
6
50Ω
2N2907
R5
IOUT ≤ 15mA
R4
-15V
IOUT = VIN
IOUT ≤ 100mA
R3
R1 * R5
GIVEN R3= R4+R5, R1=R2
These current sources will supply both positive and negative current into a grounded
load.
⎛ R4
⎞
+ 1⎟
R5 ⎜
R2
⎝
⎠ and that for Z to be indefinite, R5 + R4 must = R3 .
Note that ZO =
O
R5 + R4 R3
R2
R1
−
R2
R1
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AMSOP-77
TYPICAL APPLICATIONS (Continued)
Precision Current Sinks
Positive Current Sink
Positive current Source
V+
R1
RL
+
VIN
+
OP-77
-
200Ω
200Ω
OP-77
IO
VIN
VIN
IO =
R1
VIN ≥ 0V
FULL SCALE OF 1V,
IO = 1A/V
IRF520
IRF520
-
IO
VIN
R1
VIN ≤ 0V
IO =
RL
V-
R1
1Ω
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
1kΩ
+15V
0.1µF
+15V
C1
30pF
0.1µF
D1
1N4148
2
2
-
D2
7
OP-77E
3
+
4
6
3
7
OP-77E
+
4
2N4393
0.1µF
6
VOUT
0< VOUT<10V
0.1µF
R3
2kΩ
-15V
-15V
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.
Low Noise Precision Reference
+15V
+
10µF
2
2
2
REF-01 6
VO
REF-01 6
VO
REF-01 6
VO
4
4
4
100kΩ
OP-77
+
VOUT
100kΩ
100kΩ
0.1µF
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.
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Phone (925) 443-0722
Fax (925) 443-0723
AMSOP-77
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
0.228-0.244
(5.791-6.197)
0.150-0.157**
(3.810-3.988)
1
2
3
4
0.010-0.020 x 45°
(0.254-0.508)
0.053-0.069
(1.346-1.752)
0.004-0.010
(0.101-0.254)
0.014-0.019
(0.355-0.483)
0.008-0.010
(0.203-0.254)
0.050
(1.270)
TYP
0°-8° TYP
0.016-0.050
(0.406-1.270)
S (SO-8 ) AMS DRW# 042293
*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
1
2
3
4
0.255±0.015*
(6.477±0.381)
0.045-0.065
(1.143-1.651)
0.300-0.325
(7.620-8.255)
0.130±0.005
(3.302±0.127)
0.065
(1.651)
TYP
0.005
(0.127)
MIN
0.100±0.010
(2.540±0.254)
0.125
(3.175)
MIN
0.009-0.015
(0.229-0.381)
0.015
(0.380)
MIN
0.018±0.003
(0.457±0.076)
0.325 +0.025
-0.015
(8.255 +0.635 )
-0.381
P (8L PDIP ) AMS DRW# 042294
*DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTUSIONS.
MOLD FLASH OR PROTUSIONS SHALL NOT EXCEED 0.010" (0.254mm)
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
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