Very Low Noise Quad
Operational Amplifier
a
OP470
FEATURES
PIN CONNECTIONS
Very Low-Noise, 5 nV/÷Hz @ 1 kHz Max
Excellent Input Offset Voltage, 0.4 mV Max
Low Offset Voltage Drift, 2 ꢀV/ꢁC Max
Very High Gain, 1000 V/mV Min
Outstanding CMR, 110 dB Min
Slew Rate, 2 V/ꢀs Typ
Gain-Bandwidth Product, 6 MHz Typ
Industry Standard Quad Pinouts
Available in Die Form
14-Lead Hermetic DIP
16-Lead SOIC Package
(S-Suffix)
(Y-Suffix)
14-Lead Plastic DIP
(P-Suffix)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
OUT A
–IN A
+IN A
V+
OUT D
–IN D
+IN D
V–
1
2
3
4
5
6
7
14 OUT D
13 –IN D
12 +IN D
11 V–
OUT A
–IN A
+IN A
V+
OP470
+IN B
–IN B
OUT B
NC
+IN C
–IN C
GENERAL DESCRIPTION
OP470
10 OUT C
NC
The OP470 is a high-performance monolithic quad operational
amplifier with exceptionally low voltage noise, 5 nV/÷Hz at
1 kHz max, offering comparable performance to ADI’s industry
standard OP27.
+IN B
–IN B
OUT B
10 +IN C
9
9
8
–IN C
OUT C
NC = NO CONNECT
The OP470 features an input offset voltage below 0.4 mV,
excellent for a quad op amp, and an offset drift under 2 mV/∞C,
guaranteed over the full military temperature range. Open loop
gain of the OP470 is over 1,000,000 into a 10 kW load ensuring
excellent gain accuracy and linearity, even in high gain applica-
tions. Input bias current is under 25 nA, which reduces errors
due to signal source resistance. The OP470’s CMR of over 110
dB and PSRR of less than 1.8 mV/V significantly reduce errors
due to ground noise and power supply fluctuations. Power
consumption of the quad OP470 is half that of four OP27s, a
significant advantage for power conscious applications. The
OP470 is unity-gain stable with a gain bandwidth product of
6 MHz and a slew rate of 2 V/ms.
The OP470 offers excellent amplifier matching which is impor-
tant for applications such as multiple gain blocks, low noise
instrumentation amplifiers, quad buffers, and low noise active
filters.
The OP470 conforms to the industry standard 14-lead DIP
pinout. It is pin compatible with the LM148/149, HA4741,
HA5104, and RM4156 quad op amps and can be used to up-
grade systems using these devices.
For higher speed applications, the OP471, with a slew rate of 8
V/ms, is recommended.
SIMPLIFIED SCHEMATIC
V+
BIAS
+IN
–IN
V–
REV. B
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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