Precision Rail-to-Rail

Input and Output Operational Amplifiers

OP184/OP284/OP484

Rev. D

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FEATURES

Single-supply operation

Wide bandwidth: 4 MHz

Low offset voltage: 65 μV

Unity-gain stable

High slew rate: 4.0 V/μs

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 V to 36 V (or

±1.5 V to ±18 V) and function with a single supply as low as 1.5 V.

These amplifiers are superb for single-supply applications

requiring both ac and precision dc performance. The combi-

nation 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

amplifiers 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

enables designers to build multistage filters in single-supply

systems 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 is

available in 8-lead SOIC surface mount packages. The dual is

available in 8-lead PDIP and SOIC surface mount packages.

The quad OP484 is available in 14-lead PDIP and 14-lead,

narrow-body SOIC packages.

PIN CONFIGURATIONS

1

2

3

4

OUT A

V+

NULL

NC

NULL

–IN A

+IN A

V–

8

7

6

5

NC = NO CONNECT

–

+

TOP VIEW

(Not to Scale)

OP184

Figure 1. 8-Lead SOIC (S-Suffix)

1

2

3

4

8

7

6

5

OUT B

–IN B

+IN B

V+

OUT A

–IN A

+IN A

V–

OP284

TOP VIEW

(Not to Scale)

Figure 2. 8-Lead PDIP (P-Suffix)

8-Lead SOIC (S-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

OP484

TOP VIEW

(Not to Scale)

Figure 3. 14-Lead PDIP (P-Suffix)

14-Lead Narrow-Body SOIC (S-Suffix)