PDS-939F

Printed in U.S.A. June, 1997

FEATURES

q LOW NOISE: 2.3nV/

√Hz

q LOW DIFFERENTIAL GAIN/PHASE ERROR

q HIGH OUTPUT CURRENT: 150mA

q FAST SETTLING: 25ns (0.01%)

q GAIN-BANDWIDTH: 500MHz

q STABLE IN GAINS:

q LOW OFFSET VOLTAGE:

q SLEW RATE: 500V/

q 8-PIN DIP, SOIC PACKAGES

Wideband Precision

OPERATIONAL AMPLIFIER

APPLICATIONS

q LOW NOISE PREAMPLIFIER

q LOW NOISE DIFFERENTIAL AMPLIFIER

q HIGH-RESOLUTION VIDEO

q LINE DRIVER

q HIGH-SPEED SIGNAL PROCESSING

q ADC/DAC BUFFER

q ULTRASOUND

q PULSE/RF AMPLIFIERS

q ACTIVE FILTERS

DESCRIPTION

The OPA621 is a precision wideband monolithic opera-

tional amplifier featuring very fast settling time, low

differential gain and phase error, and high output

current drive capability.

The OPA621 is stable in gains of

±2V/V or higher. This

amplifier has a very low offset, fully symmetrical

differential input due to its “classical” operational am-

plifier circuit architecture. Unlike “current-feedback”

Current

Mirror

Output

Stage

3

2

Non-Inverting

Input

Inverting

Input

7

+V

CC

4

–V

CC

6 Output

®

OPA621

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

amplifier designs, the OPA621 may be used in all op

amp applications requiring high speed and precision.

Low noise and distortion, wide bandwidth, and high

linearity make this amplifier suitable for RF and video

applications. Short circuit protection is provided by an

internal current-limiting circuit.

The OPA621 is available in DIP and SO-8 packages.

SBOS164