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OP37 Datasheet(PDF) 1 Page - Analog Devices

Part No. OP37
Description  Low Noise, Precision, High Speed Operational Amplifier
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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OP37 Datasheet(HTML) 1 Page - Analog Devices

 
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REV. 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.
a
OP37
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2002
Low Noise, Precision, High Speed
Operational Amplifier (A VCL > 5)
SIMPLIFIED SCHEMATIC
V–
V+
Q2B
R2*
Q3
Q2A
Q1A
Q1B
R4
R1*
R3
18
VOS ADJ.
R1 AND R2 ARE PERMANENTLY
ADJUSTED AT WAFER TEST FOR
MINIMUM OFFSET VOLTAGE.
*
NON-INVERTING
INPUT (+)
INVERTING
INPUT (–)
Q6
Q21
C2
R23
R24
Q23
Q24
Q22
R5
Q11
Q12
Q27
Q28
C1
R9
R12
C3
C4
Q26
Q20
Q19
Q46
Q45
OUTPUT
FEATURES
Low Noise, 80 nV p-p (0.1 Hz to 10 Hz)
3 nV/
√Hz @ 1 kHz
Low Drift, 0.2
V/ C
High Speed, 17 V/ s Slew Rate
63 MHz Gain Bandwidth
Low Input Offset Voltage, 10
V
Excellent CMRR, 126 dB (Common-Voltage @ 11 V)
High Open-Loop Gain, 1.8 Million
Replaces 725, OP-07, SE5534 In Gains > 5
Available in Die Form
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
(en= 3.5 nV/ @ 10 Hz), a low 1/f noise corner frequency of
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 IB and IOS
to 20 nA and 15 nA respectively.
PIN CONNECTIONS
8-Lead Hermetic DIP
(Z Suffix)
Epoxy Mini-DIP
(P Suffix)
8-Lead SO
(S Suffix)
8
7
6
5
1
2
3
4
NC = NO CONNECT
VOS TRIM
–IN
+IN
VOS TRIM
V+
OUT
NC
V–
OP37
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.


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