Wideband, Single Supply

OPERATIONAL AMPLIFIERS

®

OPA634

OPA635

© 1999 Burr-Brown Corporation

PDS-1465A

Printed in U.S.A. June, 1999

FEATURES

q HIGH BANDWIDTH: 150MHz (G = +2)

q +3V AND +5V OPERATION

q ZERO POWER DISABLE (OPA635)

q INPUT RANGE INCLUDES GROUND

q 4.8V OUTPUT SWING ON +5V SUPPLY

q HIGH OUTPUT CURRENT: 80mA

q HIGH SLEW RATE: 250V/

q LOW INPUT VOLTAGE NOISE: 5.6nV/

√HZ

q AVAILABLE IN SOT23 PACKAGES

DESCRIPTION

The OPA634 and OPA635 are low power, voltage-

feedback, high-speed amplifiers designed to operate on

+3V or +5V single-supply voltages. Operation on

±5V

or +10V supplies is also supported. The input range

extends below ground and to within 1.2V of the positive

supply. Using complementary common-emitter outputs

provides an output swing to within 30mV of ground and

140mV of positive supply. The high output drive cur-

rent, low differential gain and phase errors make them

ideal for single-supply composite video line driving.

Low distortion operation is ensured by the high gain

bandwidth (140MHz) and slew rate (250V/

µs). This

makes the OPA634 and OPA635 ideal input buffer

stages to 3V and 5V CMOS converters. Unlike other low

power, single-supply operational amplifiers, distortion

performance improves as the signal swing is decreased.

APPLICATIONS

q SINGLE SUPPLY ADC INPUT BUFFER

q SINGLE SUPPLY VIDEO LINE DRIVER

q WIRELESS LAN IF AMPLIFIER

q CCD IMAGING CHANNELS

q LOW POWER ULTRASOUND

TM

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/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

A low 5.6nV input voltage noise supports wide dynamic

range operation. Multiplexing or system power reduc-

tion can be achieved using the high-speed disable line

with the OPA635. Power dissipation can be reduced to

zero by taking the disable line High.

The OPA634 and OPA635 are available in an industry

standard SO-8 package. The OPA634 is also available in

an ultra-small SOT23-5 package, while the OPA635 is

available in the SOT23-6. Where lower supply current

and speed are required, consider the OPA631 and

OPA632.

OPA635

V

IN

750

Ω

562

Ω

2.26k

Ω

374

Ω

22pF

+3V

100

Ω

Pwrdn

DIS

Disable

+3V

ADS900

10-Bit

20Msps

OPA634

For most current data sheet and other product

information, visit www.burr-brown.com

SINGLES

DUALS

Medium Speed, No Disable

OPA631

OPA2631

With Disable

OPA632

—

High Speed, No Disable

OPA634

OPA2634

With Disable

OPA635

—

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