REV. A
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a
OP471
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
14-Lead
Hermetic Dip
(Y-Suffix)
14
13
12
11
10
9
8
1
2
3
4
5
6
7
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
OP471
16-Lead SOIC
(S-Suffix)
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
NC = NO CONNECT
OUT A OUT D
OP471
–IN A –IN D
+IN A +IN D
V+ V–
+IN B +IN C
–IN B –IN C
OUT B OUT C
NC NC
High Speed, Low Noise Quad
Operational Amplifier
IN
+IN
BIAS
V–
V+
OUT
Figure 1. Simplified Schematic
FEATURES
Excellent Speed: 8 V/s Typ
Low Noise: 11 nV/÷
Hz @ 1 kHz Max
Unity-Gain Stable
High Gain Bandwidth: 6.5 MHz Typ
Low Input Offset Voltage: 0.8 mV Max
Low Offset Voltage Drift: 4 V/C Max
High Gain: 500 V/mV Min
Outstanding CMR: 105 dB Min
Industry Standard Quad Pinouts
GENERAL DESCRIPTION
The OP471 is a monolithic quad op amp featuring low noise,
11 nV/÷Hz Max @ 1 kHz, excellent speed, 8 V/ms typical, a
gain bandwidth of 6.5 MHz, and unity-gain stability.
The OP471 has an input offset voltage under 0.8 mV and an
input offset voltage drift below 4 mV/∞C, guaranteed over the full
military temperature range. Open-loop gain of the OP471 is over
500,000 into a 10 kW load ensuring outstanding gain accuracy
and linearity. The input bias current is under 25 nA limiting
errors due to signal source resistance. The OP471’s CMR of
over 105 dB and PSRR of under 5.6 mV/V significantly reduce
errors caused by ground noise and power supply fluctuations.
The OP471 offers excellent amplifier matching which is important
for applications such as multiple gain blocks, low-noise instru-
mentation amplifiers, quad buffers and low-noise active filters.
The OP471 conforms to the industry standard 14-lead DIP
pinout. It is pin-compatible with the LM148/LM149, HA4741,
RM4156, MC33074, TL084 and TL074 quad op amps and can
be used to upgrade systems using these devices.
For applications requiring even lower voltage noise the OP470
with a voltage density of 5 nV/÷Hz Max @ 1 kHz is recommended.
PIN CONFIGURATIONS
14-Lead
Plastic Dip
(P-Suffix)
14
13
12
11
10
9
8
1
2
3
4
5
6
7
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
OP471
