Image OP37
型号: OP37
厂商: Analog Devices Inc Analog Devices Inc
标准:
分类: 半导体
描述: low noise, precision, high speed operational amplifier
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Low Noise, Precision, High Speed  
a
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Operational Amplifier (A VCL 5)  
OP37  
FEATURES  
The output stage has good load driving capability. A guaranteed  
swing of 10 V into 600 and low output distortion make the  
OP37 an excellent choice for professional audio applications.  
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  
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.  
GENERAL DESCRIPTION  
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.  
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.  
PIN CONNECTIONS  
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.  
8-Lead Hermetic DIP  
(Z Suffix)  
Epoxy Mini-DIP  
(P Suffix)  
8-Lead SO  
(S Suffix)  
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.  
1
2
3
4
8
7
6
5
V
TRIM  
V
TRIM  
IN  
+IN  
V–  
OS  
OS  
OP37  
V+  
OUT  
NC  
NC = NO CONNECT  
SIMPLIFIED SCHEMATIC  
V+  
C2  
R3  
R4  
1
8
Q6  
Q22  
Q46  
C1  
V
ADJ.  
OS  
R23 R24  
Q24  
R1*  
R2*  
Q21  
Q23  
R9  
R12  
Q20 Q19  
OUTPUT  
Q1A Q1B  
Q2B Q2A  
NON-INVERTING  
INPUT (+)  
C3  
C4  
R5  
Q3  
Q26  
INVERTING  
INPUT (–)  
Q45  
Q11 Q12  
Q27  
Q28  
*R1 AND R2 ARE PERMANENTLY  
ADJUSTED ATWAFERTEST FOR  
MINIMUM OFFSETVOLTAGE.  
V–  
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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
may result from its use. No license is granted by implication or otherwise  
under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© Analog Devices, Inc., 2002  

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