1

®

OPA241, 2241, 4241

OPA251, 2251, 4251

®

OPA251

OPA2251

OPA4251

© 1997 Burr-Brown Corporation

PDS-1406B

Printed in U.S.A. October, 1998

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111

Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

OPERATIONAL AMPLIFIERS

FEATURES

q SINGLE-SUPPLY OPERATION

q RAIL-TO-RAIL OUTPUT (within 50mV)

q WIDE SUPPLY RANGE

Single Supply: +2.7V to +36V

Dual Supply:

q LOW OFFSET VOLTAGE:

q HIGH COMMON-MODE REJECTION: 124dB

q HIGH OPEN-LOOP GAIN: 128dB

q SINGLE, DUAL, AND QUAD

DESCRIPTION

The OPA241 series and OPA251 series are specifically

designed for battery powered, portable applications. In addi-

tion to very low power consumption (25

µA), these amplifi-

ers feature low offset voltage, rail-to-rail output swing, high

common-mode rejection, and high open-loop gain.

The OPA241 series is optimized for operation at low power

supply voltage while the OPA251 series is optimized for

high power supplies. Both can operate from either single

(+2.7V to +36V) or dual supplies (

±1.35V to ±18V). The

input common-mode voltage range extends 200mV below

the negative supply—ideal for single-supply applications.

They are unity-gain stable and can drive large capacitive

loads. Special design considerations assure that these prod-

ucts are easy to use. High performance is maintained as the

amplifiers swing to their specified limits. Because the initial

offset voltage (

±250µV max) is so low, user adjustment is

usually not required. However, external trim pins are pro-

vided for special applications (single versions only).

The OPA241 and OPA251 (single versions) are available

in standard 8-pin DIP and SO-8 surface-mount packages.

The OPA2241 and OPA2251 (dual versions) come in 8-pin

DIP and SO-8 surface-mount packages. The OPA4241 and

OPA4251 (quad versions) are available in 14-pin DIP and

SO-14 surface-mount packages. All are fully specified

from –40

°C to +85°C and operate from –55°C to +125°C.

APPLICATIONS

q BATTERY OPERATED INSTRUMENTS

q PORTABLE DEVICES

q MEDICAL INSTRUMENTS

q TEST EQUIPMENT

OPA241

OPA2241

OPA4241

1

2

3

4

8

7

6

5

NC

V+

Output

Offset Trim

Offset Trim

–In

+In

V–

OPA241, OPA251

8-Pin DIP, SO-8

1

2

3

4

8

7

6

5

V+

Out B

–In B

+In B

Out A

–In A

+In A

V–

OPA2241, OPA2251

8-Pin DIP, 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

OPA4241, OPA4251

14-Pin DIP, SO-14

AD

BC

OPA241 Family optimized for +5V supply.

OPA251 Family optimized for

±15V supply.

OPA241

OPA4251

OPA4241

OPA2251

SBOS075