OP470

Manufacturer Part NumberOP470
DescriptionLow Noise Quad Op Amp
ManufacturerAnalog Devices
OP470 datasheet
 

Specifications of OP470

-3db Bandwidth6MHzSlew Rate2V/µs
Vos400µVIb25nA
# Opamps Per Pkg4Input Noise (nv/rthz)3.2nV/rtHz
Vcc-vee9V to 36VIsy Per Amplifier2.75mA
PackagesDIP,LCC,SOIC  
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FEATURES
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
GENERAL DESCRIPTION
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.
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.
–IN
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, 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.
14-Lead Hermetic DIP
(Y-Suffix)
14-Lead Plastic DIP
(P-Suffix)
OUT A
1
–IN A
2
+IN A
3
OP470
V+
4
+IN B
5
–IN B
6
OUT B
7
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
BIAS
+IN
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
Very Low Noise Quad
Operational Amplifier
OP470
PIN CONNECTIONS
16-Lead SOIC Package
(S-Suffix)
OUT A
1
OUT D
16
–IN A
2
15
–IN D
+IN A
+IN D
3
14
OUT D
14
V+
V–
–IN D
4
OP470
13
13
+IN B
+IN C
5
12
+IN D
12
–IN B
–IN C
V–
6
11
11
OUT B
OUT C
+IN C
7
10
10
NC
NC
9
–IN C
8
9
OUT C
8
NC = NO CONNECT
V+
V–
www.analog.com
© Analog Devices, Inc., 2002

OP470 Summary of contents

  • Page 1

    ... Open loop gain of the OP470 is over 1,000,000 into 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’ ...

  • Page 2

    ... L = ± 110 125 CM = ± 4 ± 0.56 1 p-p 125 155 (Note 5.5 6.0 –2– OP470F OP470G Min Typ Max Min Typ Max 0.2 0.8 0.4 1 200 80 200 3.8 6.5 3.8 6.5 3.3 5.5 3.3 5.5 3.2 5.0 3.2 5.0 1.7 1.7 0 ...

  • Page 3

    ... R O COMMON-MODE REJECTION CMR V POWER SUPPLY REJECTION RATIO PSRR V SUPPLY CURRENT (All Amplifiers Load SY * Guaranteed by CMR test REV. B £ £ 125 C for OP470A, unless otherwise noted.) ( – Conditions ± ...

  • Page 4

    ... CM = ± ≥ ± ± 4 ± Load –4– OP470GBC Limit Unit 0.8 mV Max 20 nA Max 50 nA Min 800 V/mV Min 400 ± Min ± Min 100 dB mV/V Max 5 Max ...

  • Page 5

    ... P, Y Package . . . . . . . . . . . . . . . . . . . . . . –65∞C to +150∞C Lead Temperature Range (Soldering 60 sec 300∞C Junction Temperature ( –65∞C to +150∞C j Operating Temperature Range OP470A . . . . . . . . . . . . . . . . . . . . . . . . . –55∞C to +125∞C OP470E, OP470F . . . . . . . . . . . . . . . . . . . –25∞C to +85∞C OP470G . . . . . . . . . . . . . . . . . . . . . . . . . . –40∞C to +85∞C ORDERING GUIDE Package Options T = 25∞ max ...

  • Page 6

    ... OP470 –Typical Performance Characteristics 15V I/F CORNER = 5Hz 100 1k FREQUENCY – Hz TPC 1. Voltage Noise Density vs. Frequency 10 15V S 1.0 I/F CORNER = 200Hz 0.1 10 100 1k 10k FREQUENCY – Hz TPC 4. Current Noise Density vs. Frequency 15V ...

  • Page 7

    ... TPC 14. Open-Loop Gain vs. Frequency 5000 10k L 4000 3000 2000 1000 SUPPLY VOLTAGE – V TPC 17. Open-Loop Gain vs. Supply Voltage –7– OP470 15V –75 –50 – TEMPERSTURE – C TPC 12. Total Supply Current vs. ...

  • Page 8

    ... OP470 15V S 24 THD = 10k 100k 1M 10M FREQUENCY – Hz TPC 19. Maximum Output Swing vs. Frequency 360 15V S 300 240 180 120 A = 100 100 1k 10k 100k 1M 10M 100M FREQUENCY – Hz TPC 22. Output Impedance vs. ...

  • Page 9

    ... Figure 3. Burn-In Circuit APPLICATIONS INFORMATION Voltage and Current Noise The OP470 is a very low-noise quad op amp, exhibiting a typi- cal voltage noise of only 3.2 nV÷ kHz. The exceptionally low-noise characteristics of the OP470 are in part achieved by operating the input transistors at high collector currents since the voltage noise is inversely proportional to the square root of the collector current ...

  • Page 10

    ... The circuit of Figure test setup for measuring peak-to-peak 10k 100k voltage noise. To measure the 200 nV peak-to-peak noise speci- fication of the OP470 in the 0 range, the following precautions must be observed: 1. The device must be warmed up for at least five minutes. As shown in the warm-up drift curve, the offset voltage typi- cally changes 5 mV due to increasing chip temperature after power-up ...

  • Page 11

    ... OP470 REV. B The OP470 is a monolithic device with four identical amplifiers. The noise voltage density of each individual amplifier will match, giving: NOISE MEASUREMENT—CURRENT NOISE DENSITY The test circuit shown in Figure 10 can be used to measure current noise density. The formula relating the voltage output to ...

  • Page 12

    ... A simple circuit to eliminate this effect is shown in Figure 11. The added components, C1 and R3, decouple the amplifier from the load capacitance and provide additional stability. The values of C1 and R3 shown in Figure 11 are for a load capaci- tance 1000 pF when used with the OP470 ...

  • Page 13

    ... The complementary DAC current out- puts two of the DAC-8408’s four DACs drive current-to-voltage converters built from a single quad OP470. The amplifiers have complementary outputs with the amplitudes dependent upon the digital code applied to the DAC. Figure 16 shows the comple- mentary outputs for a 1 kHz input signal and digital ramp applied to the DAC data inputs ...

  • Page 14

    ... C1 0. 47k D2 1N4148 IN 1 OP470E C R4 10M Figure 18. Five-Band Low Noise Graphic Equalizer R7 C2 10k 10k –14– R2 1/4 3.3k OP470E 1/4 OP470E R4 R13 680 + 60Hz TANTALUM 680 + 200Hz TANTALUM R4 C4 ...

  • Page 15

    ... BSC 0.51 (0.0201) SEATING 0.32 (0.0126) PLANE 0.33 (0.0130) 0.10 0.23 (0.0091) COMPLIANT TO JEDEC STANDARDS MS-013AA –15– OP470 (N-14) Dimensions shown in inches and (millimeters) 0.685 (17.40) 0.665 (16.89) 0.295 (7.49) 0.645 (16.38) 0.285 (7.24) 0.275 (6.99 0.100 (2.54) BSC 0.325 (8.26) 0.310 (7.87) 0.015 (0.38) 0.300 (7.62) ...

  • Page 16

    ADV611/ADV612 Revision History Location 10/02—Data Sheet changed from REV REV. B. Edits to 16-Lead SOIC . . . . . . . . . . . . . . . . . . . . . . . ...