High Speed, Low Noise Quad
a
Operational Amplifier
OP471
FEATURES PIN CONFIGURATIONS
Excellent Speed: 8 V/s Typ
14-Lead 14-Lead
Low Noise: 11 nV/Hz @ 1 kHz Max
Hermetic Dip Plastic Dip
Unity-Gain Stable
(Y-Suffix) (P-Suffix)
High Gain Bandwidth: 6.5 MHz Typ
Low Input Offset Voltage: 0.8 mV Max
Low Offset Voltage Drift: 4 V/C Max
1 14 OUT D 1 14 OUT D
OUT A OUT A
High Gain: 500 V/mV Min
IN A 2 13 IN D IN A 2 13 IN D
Outstanding CMR: 105 dB Min
+IN A 3 12 +IN D +IN A 3 12 +IN D
Industry Standard Quad Pinouts
V+ 4 11 V V+ 4 11 V
OP471 OP471
+IN B 5 10 +IN C +IN B 5 10 +IN C
GENERAL DESCRIPTION
IN B 6 9 IN C IN B 6 9 IN C
The OP471 is a monolithic quad op amp featuring low noise,
OUT B 7 8 OUT C OUT B 7 8 OUT C
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
16-Lead SOIC
input offset voltage drift below 4 mV/C, guaranteed over the full
(S-Suffix)
military temperature range. Open-loop gain of the OP471 is over
500,000 into a 10 kW load ensuring outstanding gain accuracy
1 16
OUT A OUT D
and linearity. The input bias current is under 25 nA limiting
2 15
IN A IN D
errors due to signal source resistance. The OP471s CMR of
3 14
over 105 dB and PSRR of under 5.6 mV/V significantly reduce +IN A +IN D
errors caused by ground noise and power supply fluctuations. V+ 4 13 V
OP471
+IN B 5 12 +IN C
The OP471 offers excellent amplifier matching which is important
IN B 6 11 IN C
for applications such as multiple gain blocks, low-noise instru-
OUT B 7 10 OUT C
mentation amplifiers, quad buffers and low-noise active filters.
NC 8 9 NC
The OP471 conforms to the industry standard 14-lead DIP
pinout. It is pin-compatible with the LM148/LM149, HA4741, NC = NO CONNECT
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.
V+
BIAS
OUT
IN +IN
V
Figure 1. Simplified Schematic
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
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use, nor for any infringements of patents or other rights of third parties that
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may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Fax: 781/326-8703 Analog Devices, Inc., 2002OP471SPECIFICATIONS
(@ V = 15 V, T = 25C, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS
S A
OP471E OP471F OP471G
Parameter Symbol Conditions Min Typ Max Min Typ Max Min Typ Max Unit
Input Offset Voltage V 0.25 0.8 0.5 1.5 1.0 1.8 mV
OS
Input Offset Current I V = 0 V 4 10 7 20 12 30 nA
OS CM
Input Bias Current I V = 0 V 7 25 15 50 25 60 nA
B CM
1
Input Noise Voltage e p-p 0.1 Hz to 10 Hz 250 500 250 500 250 500 nV pp
n
Input Noise e f = 10 Hz 9 16 9 16 9 16 nV/Hz
n O
2
Voltage Density f = 100 Hz 7 12 7 12 7 12 nV/Hz
O
f = 1 kHz 6.5 11 6.5 11 6.5 11 nV/Hz
O
Input Noise i f = 10 Hz 1.7 1.7 1.7 pAHz
n O
Current Density f = 100 Hz 0.7 0.7 0 7 pAHz
O
f = 1 kHz 0.4 0.4 0.4 pAHz
O
Large-Signal A V = 10 V
VO
Voltage Gain R = 10 kW 500 700 300 500 300 500 V/mV
L
R = 2 kW 350 550 175 275 175 275 V/mV
L
3
Input Voltage Range IVR 11 12 11 12 11 12 V
Output Voltage Swing V R 2 kW12 13 12 13 12 13 V
O L
Common-Mode CMR V = 11 V 105 120 95 115 95 115 dB
CM
Rejection
Power Supply PSRR V = 4.5 V to 18 V 1 5.6 5.6 17.8 5.6 17.8 mV/V
S
Rejection Ratio
Slew Rate SR 6.5 8 6.5 8 6.5 8 V/ms
Supply Current I No Load 9.2 11 9.2 11 9.2 11 mA
SY
(All Amplifiers)
Gain Bandwidth GBW Av = 10 6.5 6.5 6.5 MHz
Product
1
Channel Separation CS V = 20 V p-p 125 150 125 150 125 150 dB
O
f = 10 Hz
O
Input Capacitance C 2.6 2.6 2.6 pF
IN
Input Resistance R 1.1 1.1 1.1 MW
IN
Differential-Mode
Input Resistance R 11 11 11 GW
INCM
Common-Mode
Settling Time t A = 1
S V
To 0.1% 4.5 4.5 4.5 ms
To 0.01 % 7.5 7.5 7.5 ms
NOTES
1
Guaranteed but not 100% tested.
2
Sample tested.
3
Guaranteed by CMR test.
2 REV. A