ANALOG DEVICES OP400 Service Manual
Quad Low Offset, Low Power
O
V
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FEATURES
Low input offset voltage: 150 μV maximum
Low offset voltage drift over –55°C to +125°C: 1.2 pV/°C
ma
ximum
Low supply current (per amplifier): 725 μA maximum
High open-loop gain: 5000 V/mV minimum
Input bias current: 3 nA maximum
Low noise voltage density: 11 nV/√Hz at 1 kHz
Stable with large capacitive loads: 10 nF typical
Pin-compatible to LM148, HA4741, RM4156, and LT1014,
with impr
Available in die form
GENERAL DESCRIPTION
The OP400 is the first monolithic quad operational amplifier
that features OP77-type performance. Precision performance is
not sacrificed with the OP400 to obtain the space and cost
savings offered by quad amplifiers.
The OP400 features an extremely low input offset voltage of less
tha
n 150 µV with a drift of less than 1.2 µV/°C, guaranteed over
the full military temperature range. Open-loop gain of the
OP400 is more than 5 million into a 10 kΩ load, input bias
current is less than 3 nA, CMR is more than 120 dB, and PSRR
is less than 1.8 µV/V. On-chip Zener zap trimming is used to
achieve the low input offset voltage of the OP400 and eliminates
the need for offset nulling. The OP400 conforms to the industrystandard quad pinout, which does not have null terminals.
oved performance
Operational Amplifier
OP400
FUNCTIONAL BLOCK DIAGRAMS
1
OUTA
–IN A
OUT A
1
–IN A
2
–
3
4
5
6
7
+
OP400
–
+
+IN A
V+
+IN B
–IN B
UT B
Figure 1. 14-Pin Cera
OUT D
14
–IN D
13
–
+
+IN D
12
V–
11
10
+IN C
–
+
–IN C
9
8
OUT C
mic DIP (Y-Suffix)
00304-001
2
–
+IN A
V+
+IN B
–IN B
OUT B
NC
+
3
4
OP400
5
–
+
6
7
8
NC = NO CONNECT
Figure 2. 16-Pin SOIC (S-Suffix)
and 14-Pin Plastic DIP (P-Suffix)
The OP400 features low power consumption, drawing less than
725 µA p
er amplifier. The total current drawn by this quad
amplifier is less than that of a single OP07, yet the OP400 offers
significant improvements over this industry-standard op amp.
Voltage noise density of the OP400 is a low 11 nV/√Hz at
10 Hz, half that of most competitive devices.
The OP400 is pin-compatible with the LM148, HA4741,
RM4156, a
nd LT1014 operational amplifiers and can be used to
upgrade systems having these devices. The OP400 is an ideal
choice for applications requiring multiple precision operational
amplifiers and where low power consumption is critical.
16
OUT D
–IN D
15
–
+
+IN D
14
V–
13
12
+IN C
–
+
–IN C
11
OUT C
10
NC
9
+
00304-002
VOLTAGE
LIMITING
NETWORK
+IN –IN
Figure 3. Simplified Schematic (One of
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
BIAS
OUT
V–
0304-003
Four Amplifiers Is Shown)
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2007 Analog Devices, Inc. All rights reserved.
OP400
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TABLE OF CONTENTS
Features .............................................................................................. 1
Functional Block Diagrams............................................................. 1
General Description .........................................................................1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics ............................................................. 3
Absolute Maximum Ratings............................................................ 5
Thermal Resistance ...................................................................... 5
ESD Caution.................................................................................. 5
REVISION HISTORY
1/07—Rev. D to Rev. E
Updated Format..................................................................Universal
Changes to Figure 1 and Figure 2 ...................................................1
Removed Figure 4............................................................................. 4
Changes to Table 3............................................................................ 4
Changes to Figure 1
Changes to Figure 27........................................................................ 9
Changes to Figure 28...................................................................... 10
Changes to Figure 33...................................................................... 13
Updated Outline Dimensions....................................................... 14
3/06—Rev. C to Rev. D
Updated Format..................................................................Universal
Deleted Wafer Test Limits Table..................................................... 4
New Package Drawing: R-14 ......................................................... 15
U
pdated Outline Dimensions....................................................... 15
Changes to Ordering Guide.......................................................... 16
6 through Figure 19, Figure 21..................... 8
Typical Performanc e Characteristics ..............................................6
Applications..................................................................................... 11
Dual Low Power Instrumentation Amplifier......................... 11
Bipolar Current Transmitter..................................................... 12
Differential Output Instrumentation Amplifier .................... 12
Multiple Output Tracking Voltage Reference......................... 13
Outline Dimensions .......................................................................14
Ordering Guide .......................................................................... 15
SMD Parts and Equivalents ......................................................15
6/03—Rev. B to Rev. C
Edits to Specifications.......................................................................2
10/02—Rev. A to Rev. B
Addition of Absolute Maximum Ratings.......................................5
Edits to Outline Dimensions......................................................... 12
4/02—Rev. 0 to Rev. A
Edits to Features.................................................................................1
Edits to Ordering Information ........................................................1
Edits to Pin Connections..................................................................1
Edits to General Descriptions..................................................... 1, 2
Edits to Package Type .......................................................................2
Rev. E | Page 2 of 16
OP400
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SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
@ VS = ±15 V, TA = +25°C, unless otherwise noted.
Table 1.
OP400A/E OP400F OP400G/H
Parameter Symbol Conditions Min Typ Max Min Typ Max Min Typ Max Unit
INPUT CHARACTERISTICS
Input Offset Voltage V
Long-Term Input
OS
0.1 0.1 0.1 μV/mo
Voltage Stability
Input Offset Current IOS VCM = 0 V 0.1 1.0 0.1 2.0 0.1 3.5 nA
Input Bias Current IB VCM = 0 V 0.75 3.0 0.75 6.0 0.75 7.0 nA
Input Noise Voltage e
Input Resistance
n p-p
R
10 10 10 MΩ
IN
Differential Mode
Input Resistance
R
INCM
Common Mode
Large Signal Voltage
A
VO
Gain
R
R
Input Voltage Range1 IVR ±12 ±13 ±12 ±13 ±12 ±13 V
Common-Mode
CMR V
Rejection
Input Capacitance C
OUTPUT
IN
CHARACTERISTICS
Output Voltage Swing VO RL = 10 kΩ ±12 ±12.6 ±12 ±12.6 ±12 ±12.6 V
POWER SUPPLY
Power Supply Rejection
PSRR V
Ratio
I
Supply Current per
No load 600 725 600 725 600 725 μA
SY
Amplifier
DYNAMIC PERFORMANCE
Slew Rate SR 0.1 0.15 0.1 0.15 0.1 0.15 V/μs
Gain Bandwidth
GBWP A
Product
Channel Separation CS VO = 20 V p-p, 123 135 123 135 123 135 dB
fO = 10 Hz
Capacitive Load
Stability
NOISE PERFORMANCE
Input Noise Voltage en fO = 10 Hz
3
Density
Input Noise Current i
Input Noise Current
f
n p-p
i
fO = 10 Hz 0.6 0.6 0.6 pA/√Hz
n
Density
1
Guaranteed by CMR test.
2
Guaranteed but not 100% tested.
3
Sample tested.
40 150 60 230 80 300 μV
0.1 Hz to 10 Hz 0.5 0.5 0.5 μV p-p
200 200 200 GΩ
VO = ±10 V
= 10 kΩ 5000 12,000 3000 7000 3000 7000 V/mV
L
= 2 kΩ 2000 3500 1500 3000 1500 3000 V/mV
L
= 12 V 120 140 115 140 110 135 dB
CM
3.2 3.2 3.2 pF
= 3 V to 18 V 0.1 1.8 0.1 3.2 0.2 5.6 μV/V
S
= 1 500 500 500 kHz
V
2
AV = 1,
10 10 10 nF
no oscillations
3
22 36 22 36 22 nV/√Hz
= 1000 Hz3 11 18 11 18 11 nV/√Hz
O
0.1 Hz to 10 Hz 15 15 15 pA p-p
Rev. E | Page 3 of 16
OP400
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@ VS = ±15 V, −55°C ≤ TA ≤ +125°C for OP400A, unless otherwise noted.
Table 2.
Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS
Input Offset Voltage V
Average Input Offset Voltage Drift TCV
Input Offset Current I
Input Bias Current I
OS
OS
OS
B
Large Signal Voltage Gain AVO VO = ±10 V, RL = 10 kΩ 3000 9000 V/mV
R
Input Voltage Range1 IVR ±12 ±12.5 V
Common-Mode Rejection CMR VCM = ±12 V 115 130 dB
OUTPUT CHARACTERISTICS
Output Voltage Swing VO RL = 10 kΩ ±12 ±12.4
POWER SUPPLY
Power Supply Rejection Ratio PSRR VO = 3 V to 18 V 0.2 3.2 μV/V
Supply Current per Amplifier ISY No load 600 775 μA
DYNAMIC PERFORMANCE
Capacitive Load Stability AV = 1, no oscillations 8 nF
1
Guaranteed by CMR test.
@ V
= ±15 V, −25°C ≤ TA ≤ +85°C for OP400E/F, 0°C ≤ TA ≤ 70°C for OP400G, −40°C ≤ TA ≤ +85°C for OP400H, unless otherwise noted.
S
70 270 μV
0.3 1.2 μV/°C
VCM = 0 V 0.1 2.5 nA
VCM = 0 V 1.3 5.0 nA
= 2 kΩ 1000 2300
L
Table 3.
OP400E OP400F OP400G/H
Parameter Symbol Conditions Min Typ Max Min Typ Max Min Typ Max Unit
INPUT CHARACTERISTICS
Input Offset Voltage VOS 60 220 80 350 110 400 μV
Average Input Offset
TCVOS 0.3 1.2 0.3 2.0 0.6 2.5 μV/°C
Voltage Drift
Input Offset Current IOS VCM = 0 V
E, F, G grades 0.1 2.5 0.1 3.5 0.2 6.0 nA
H grade 0.2 12.0 nA
Input Bias Current IB VCM = 0 V
E, F, G grades 0.9 5.0 0.9 10.0 1.0 12.0 nA
H grade 1.0 20.0 nA
Large-Signal Voltage Gain AVO VCM = 0 V
R
R
Input Voltage Range
1
IVR ±12 ±12.5 ±12 ±12.5 ±12 ±12.5 V
= 10 kΩ 3000 10,000 2000 5000 2000 5000 V/mV
L
= 2 kΩ 1500 2700 1000 2000 1000 2000 V/mV
L
Common-Mode Rejection CMR VCM = ±12 V 115 135 110 135 105 130 dB
OUTPUT CHARACTERISTICS
Output Voltage Swing VO RL = 10 kΩ ±12 ±12.4 ±12 ±12.4 ±12 ±12.6 V
R
= 2 kΩ ±11 ±12 ±11 ±12 ±11 ±12.2 V
L
POWER SUPPLY
Power Supply Rejection
Ratio
Supply Current per
PSRR
VS = ±3 V to
±18 V
I
No load 600 775 600 775 600 775 μA
SY
0.15 3.2 0.15 5.6 0.3 10.0 μV/V
Amplifier
DYNAMIC PERFORMANCE
Capacitive Load Stability No oscillations 10 10 10 nF
1
Guaranteed by CMR test.
Rev. E | Page 4 of 16
OP400
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ABSOLUTE MAXIMUM RATINGS
Table 4.
Parameter Rating
Supply Voltage ±20 V
Differential Input Voltage ±30 V
Input Voltage Supply voltage
Output Short-Circuit Duration Continuous
Storage Temperature Range
P, Y Packages −65°C to +150°C
Lead Temperature (Soldering 60 sec) 300°C
Junction Temperature (TJ) Range −65°C to +150°C
Operating Temperature Range
OP400A −55°C to +125°C
OP400E, OP400F −25°C to +85°C
OP400G 0°C to 70°C
OP400H −40°C to +85°C
ESD CAUTION
Stresses above those listed under Absolute Maximum Ratings
y cause permanent damage to the device. This is a stress
ma
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Absolute maximum ratings apply to both dice and packaged
arts, unless otherwise noted.
p
THERMAL RESISTANCE
θJA is specified for worst-case mounting conditions, that is, θJA is
specified for device in socket for CERDIP and PDIP packages;
θ
is specified for device soldered to printed circuit board for
JA
SOIC package.
Table 5. Thermal Resistance
Package Type θJA θJC Unit
14-Pin Ceramic DIP (Y) 94 10 °C/W
14-Pin Plastic DIP (P) 76 33 °C/W
16-Pin SOIC (S) 88 23 °C/W
Rev. E | Page 5 of 16
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