OP37 Analog Devices, OP37 Datasheet

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OP37

Manufacturer Part Number
OP37
Description
Low Noise, Precision, High Speed Operational Amplifier (A(VCL) >- 5)
Manufacturer
Analog Devices
Datasheet

Specifications of OP37

-3db Bandwidth
12MHz
Slew Rate
17V/µs
Vos
30µV
Ib
15nA
# Opamps Per Pkg
1
Input Noise (nv/rthz)
3.2nV/rtHz
Vcc-vee
8V to 44V
Isy Per Amplifier
5.67mA
Packages
DIP,SOIC

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a
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
REV. A
GENERAL DESCRIPTION
The OP37 provides the same high performance as the OP27,
but the design is optimized for circuits with gains greater than
five. This design change increases slew rate to 17 V/µs and
gain-bandwidth product to 63 MHz.
The OP37 provides the low offset and drift of the OP07
plus higher speed and lower noise. Offsets down to 25 µV and
drift of 0.6 µV/°C maximum make the OP37 ideal for preci-
sion instrumentation applications. Exceptionally low noise
(e
2.7 Hz, and the high gain of 1.8 million, allow accurate
high-gain amplification of low-level signals.
The low input bias current of 10 nA and offset current of 7 nA
are achieved by using a bias-current cancellation circuit. Over
the military temperature range this typically holds I
to 20 nA and 15 nA respectively.
n
= 3.5 nV/ @ 10 Hz), a low 1/f noise corner frequency of
NON-INVERTING
√Hz
INVERTING
INPUT (+)
INPUT (–)
R1 AND R2 ARE PERMANENTLY
ADJUSTED AT WAFER TEST FOR
MINIMUM OFFSET VOLTAGE.
Q6
Q3
Q1A
R1
R3
Q1B
V
1
OS
ADJ.
8
Q2B
SIMPLIFIED SCHEMATIC
B
Q2A
R4
R2
and I
OS
Q11
Low Noise, Precision, High Speed
Q21
Q12
Operational Amplifier (A
The output stage has good load driving capability. A guaranteed
swing of 10 V into 600 Ω and low output distortion make the
OP37 an excellent choice for professional audio applications.
PSRR and CMRR exceed 120 dB. These characteristics, coupled
with long-term drift of 0.2 µV/month, allow the circuit designer
to achieve performance levels previously attained only by
discrete designs.
Low-cost, high-volume production of the OP37 is achieved by
using on-chip zener-zap trimming. This reliable and stable offset
trimming scheme has proved its effectiveness over many years of
production history.
The OP37 brings low-noise instrumentation-type performance to
such diverse applications as microphone, tapehead, and RIAA
phono preamplifiers, high-speed signal conditioning for data
acquisition systems, and wide-bandwidth instrumentation.
Q27
Q23
C2
R23
R5
R24
Q24
Q28
V
OS
Q22
C3
TRIM
8-Lead Hermetic DIP
PIN CONNECTIONS
+IN
–IN
V–
R9
R12
Epoxy Mini-DIP
NC = NO CONNECT
1
2
3
4
C1
8-Lead SO
C4
(Z Suffix)
(P Suffix)
(S Suffix)
Q26
OP37
Q20
Q19
8
7
6
5
V
V+
OUT
NC
OS
Q46
Q45
TRIM
V+
OUTPUT
V–
VCL
OP37
> 5)

Related parts for OP37

OP37 Summary of contents

Page 1

... MHz. The OP37 provides the low offset and drift of the OP07 plus higher speed and lower noise. Offsets down to 25 µV and drift of 0.6 µV/°C maximum make the OP37 ideal for preci- sion instrumentation applications. Exceptionally low noise ( ...

Page 2

... Differential Input Voltage (Note2 0.7 V Differential Input Current (Note Storage Temperature Range . . . . . . . . . . . . . –65°C to +150°C Operating Temperature Range OP37A . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° 25°C OP37E ( –25°C to +85°C OP37E, OP-37F ( 0°C to 70°C OP37G ( –40°C to +85°C Lead Temperature Range (Soldering, 60 sec 300° ...

Page 3

... OP37 Unit µV µV/ µV p-p nV/√ Hz pA/√ Hz MΩ GΩ µV/ V V/m V V V/µs MHz MHz Ω ...

Page 4

... Typ Max µV 30 100 0.6 0.4 1.8 30 135 nA ± 60 ± 35 ± 150 ±± 10.2 ± 11.5 94 116 µ 300 800 ± 10.5 ± 13.0 < for OP37EP/FP, and –40 C < OP37F OP37C Typ Max Min Typ Max 40 140 55 220 0.3 1.3 0.4 1 135 ± 18 ± 95 ± 25 ± 150 ± ...

Page 5

... O NOTES For 25°C characterlstics of OP37NT and OP37GT devices, see OP37N and OP37G characteristics, respectively. Electrical tests are performed at wafer probe to the limits shown. Due to variations in assembly methods and normal yield loss, yield after packaging is not guaranteed for standard product dice. Consult factory to negotiate specifications based on dice lot qualification through sample lot assembly and testing. ...

Page 6

... S A OP37NT OP37N OP37GT Typical Typical Typical 0.2 0.2 0 130 100 100 160 3.5 3.5 3.5 3.1 3.1 3.1 3.0 3.0 3.0 1.7 1.7 1.7 1.0 1.0 1.0 0.4 0.4 0.4 0.08 0.08 0. OP37G OP37GR Typical Typical Unit µV/°C 0.3 0.4 130 180 pA/°C 160 200 pA/°C 3.5 3.8 nV/√Hz 3.1 3.3 nV/√Hz 3.0 3.2 nV/√Hz pA/√ Hz 1.7 1.7 pA/√ Hz 1.0 1.0 pA/√ Hz 0.4 0.4 µV p-p 0.08 0. V/µ MHz ...

Page 7

... SOURCE RESISTANCE – 10.0 1.0 I/F CORNER = 140Hz 0.1 10 100 1k 10k FREQUENCY – Hz OP37 100 741 I/F CORNER 10 I/F CORNER = LOW NOISE 2.7Hz AUDIO OP AMP OP37 I/F CORNER INSTRUMENTATION AUDIO RANGE RANGE 20kHz 100 1k FREQUENCY – 15V 10Hz 3 AT 1kHz 2 1 –50 – ...

Page 8

... SLEW –50 – 100 125 TEMPERATURE – 15V S 10 OP37C/G OP37F 5 OP37A TIME AFTER POWER ON – MINUTES 15V OP37C 10 OP37B OP37A 0 –75 –50 – ...

Page 9

... 15V (1k , 250 ) V 140 V = 15V 10V 120 CM 100 10k 100k 1M 10M FREQUENCY – Hz OP37 18 16 POSITIVE 14 SWING 12 NEGATIVE 10 SWING 15V S –2 100 1k 10k LOAD RESISTANCE – 200ns 20mV +50mV 0V ...

Page 10

... OP37 0.1 F 100k OP37 10 D.U.T. 2k VOLTAGE GAIN 22 F 4.3k = 50,000 OP12 SCOPE 4 100k 2.2 F 110k 0.1 F 24.3k 160 140 120 100 NEGATIVE 80 SWING 60 POSITIVE 40 SWING 100 1k 10k 100k 1M 10M 100M FREQUENCY – SEC/DIV 15V ...

Page 11

... R P – OP37 + V– Offset Voltage Adjustment The input offset voltage of the OP37 is trimmed at wafer level. However, if further adjustment necessary kΩ trim OS potentiometer may be used. TCV is not degraded (see offset OS nulling circuit). Other potentiometer values from 1 kΩ MΩ ...

Page 12

... S BALANCED 100 100k < 1 kΩ key the OP37’s low voltage noise is maintained. S With R S resistor noise rather than current or voltage noise only beyond Rs of 20kil that current noise starts to dominate. The argument can be made that current noise is not important for applications with low to-moderate source resistances ...

Page 13

... R3 While the tape-equalization requirement has a flat high frequency gain above 3 kHz (t for unity gain. The decompensated OP37 provides a greater bandwidth and slew rate. For many applications, the idealized time constants shown may require trimming of R optimize frequency response for non ideal tape head perfor- mance and other factors ...

Page 14

... Because of the high working gain of the circuit, an OP37 helps to preserve bandwidth, which will be 110 kHz. As the OP37 is a decompensated device (minimum stable gain of 5), a dummy resistor, R ...

Page 15

... PLANE 0.014 (0.356) 0.045 (1.15) 8-Lead SO (S Suffix) 0.1968 (5.00) 0.1890 (4.80 0.2440 (6.20) 0.1574 (4.00) 0.2284 (5.80) 0.1497 (3.80 PIN 1 0.0500 (1.27) BSC 0.0688 (1.75) 0.0098 (0.25) 0.0532 (1.35) 0.0040 (0.10) 0.0192 (0.49) 0.0098 (0.25) SEATING 0.0138 (0.35) PLANE 0.0075 (0.19) 0.015 (0.38) 0.008 (0.20) 0.195 (4.95) 0.115 (2.93) 0.015 (0.381) 0.008 (0.204) 0.0196 (0.50) 45 0.0099 (0.25) 8 0.0500 (1.27) 0 0.0160 (0.41) OP37 ...

Page 16

... OP37 Revision History Location Data Sheet changed from REV REV. C. Edits to FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Edits to ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Edits to PIN CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Edits to ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Edits to PACKAGE TYPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Edits to ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Edits to APPLICATIONS INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Page ...

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