REV. 0

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otherwise under any patent or patent rights of Analog Devices.

a

Precision Rail-to-Rail Input & Output

Operational Amplifiers

OP184/OP284/OP484

FEATURES

Single-Supply Operation

Wide Bandwidth: 4 MHz

Low Offset Voltage: 65

V

Unity-Gain Stable

High Slew Rate: 4.0 V/ s

Low Noise: 3.9 nV/

√Hz

APPLICATIONS

Battery Powered Instrumentation

Power Supply Control and Protection

Telecom

DAC Output Amplifier

ADC Input Buffer

GENERAL DESCRIPTION

The OP184/OP284/OP484 are single, dual and quad single-

supply, 4 MHz bandwidth amplifiers featuring rail-to-rail inputs

and outputs. They are guaranteed to operate from +3 to +36 (or

±1.5 to ±18) volts and will function with a single supply as low

as +1.5 volts.

These amplifiers are superb for single supply applications re-

quiring both ac and precision dc performance. The combination

of bandwidth, low noise and precision makes the OP184/OP284/

OP484 useful in a wide variety of applications, including filters

and instrumentation.

Other applications for these amplifiers include portable telecom

equipment, power supply control and protection, and as amplifi-

ers or buffers for transducers with wide output ranges. Sensors

requiring a rail-to-rail input amplifier include Hall effect, piezo

electric, and resistive transducers.

The ability to swing rail-to-rail at both the input and output en-

ables designers to build multistage filters in single-supply sys-

tems and to maintain high signal-to-noise ratios.

The OP184/OP284/OP484 are specified over the HOT extended

industrial (–40

°C to +125°C) temperature range. The single

and dual are available in 8-pin plastic DIP plus SO surface

mount packages. The quad OP484 is available in 14-pin plastic

DIPs and 14-lead narrow-body SO packages.

PIN CONFIGURATIONS

8-Lead Epoxy DIP

(P Suffix)

8-Lead SO

(S Suffix)

1

2

3

4

8

7

6

5

OUT A

V+

NULL

NC

NULL

–IN A

+IN A

V–

OP184

NC = NO CONNECT

8-Lead Epoxy DIP

(P Suffix)

8-Lead SO

(S Suffix)

1

2

3

4

8

7

6

5

OP284

OUT B

–IN B

+IN B

V+

OUT A

–IN A

+IN A

V–

14-Lead Epoxy DIP

(P Suffix)

14-Lead Narrow-Body SO

(S Suffix)

14

13

12

11

10

9

8

1

2

3

4

5

6

7

OP484

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

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 617/329-4700

World Wide Web Site: http://www.analog.com

Fax: 617/326-8703

© Analog Devices, Inc., 1996