micro

Power, Rail-to-Rail

Operational Amplifiers

FEATURES

q LOW I

SOT23-5, SOT23-8, and TSSOP-14

q HIGH SPEED/POWER RATIO WITH

BANDWIDTH: 350kHz

q RAIL-TO-RAIL INPUT AND OUTPUT

q SINGLE SUPPLY: 2.3V to 5.5V

APPLICATIONS

q PORTABLE EQUIPMENT

q BATTERY-POWERED EQUIPMENT

q 2-WIRE TRANSMITTERS

q SMOKE DETECTORS

q CO DETECTORS

DESCRIPTION

The OPA347 is a

microPower, low-cost operational amplifier

available in

micropackages. The OPA347 (single version) is

available in the SC-70 and SOT23-5 packages. The OPA2347

(dual version) is available in the SOT23-8 and WCSP-8

packages. Both are also available in the SO-8. The OPA347

is also available in the DIP-8. The OPA4347 (quad) is

available in the SO-14 and the TSSOP-14.

The small size and low power consumption (34

µA per chan-

nel maximum) of the OPA347 make it ideal for portable and

battery-powered applications. The input range of the OPA347

extends 200mV beyond the rails, and the output range is

within 5mV of the rails. The OPA347 also features an

excellent speed/power ratio with a bandwidth of 350kHz.

The OPA347 can be operated with a single or dual power

supply from 2.3V to 5.5V. All models are specified for

operation from –55

°C to +125°C.

®

OPA3

47

OPA3

47

OPA2

347

OPA4

347

OPA347

1

2

3

5

4

V+

–In

Out

V–

+In

OPA347

SOT23-5

1

2

3

4

8

7

6

5

NC

V+

Out

NC

NC

–In

+In

V–

OPA347

SO-8, DIP-8

1

2

3

4

8

7

6

5

V+

Out B

–In B

+In B

Out A

–In A

+In A

V–

OPA2347

SOT23-8, SO-8

A

B

1

2

3

4

5

6

7

14

13

12

11

10

9

8

Out D

–In D

+In D

V–

+In C

–In C

Out C

Out A

–In A

+In A

V+

+In B

–In B

Out B

OPA4347

TSSOP-14, SO-14

AD

BC

OPA347

OPA2347

OPA4347

SBOS167D – NOVEMBER 2000– REVISED JULY 2007

www.ti.com

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright © 2000-2007, Texas Instruments Incorporated

1

2

3

5

4

V+

Out

+In

V–

–In

OPA347

SC70-5

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

1

2

3

4

8

7

6

5

V+

Out B

–In B

+In B

Out A

–In A

+In A

V–

OPA2347

(bump side down)

Not to Scale

WCSP-8

(top view)