1

®

OPA680

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

Wideband, Voltage Feedback

OPERATIONAL AMPLIFIER With Disable

TM

®

FEATURES

q WIDEBAND +5V OPERATION: 220MHz (G = 2)

q UNITY GAIN STABLE: 400MHz (G = 1)

q HIGH OUTPUT CURRENT: 150mA

q OUTPUT VOLTAGE SWING:

q HIGH SLEW RATE: 1800V/

q LOW SUPPLY CURRENT: 6.4mA

q LOW DISABLED CURRENT: 300

q ENABLE/DISABLE TIME: 25ns/100ns

APPLICATIONS

q VIDEO LINE DRIVER

q xDSL LINE DRIVER/RECEIVER

q HIGH SPEED IMAGING CHANNELS

q ADC BUFFERS

q PORTABLE INSTRUMENTS

q TRANSIMPEDANCE AMPLIFIERS

q ACTIVE FILTERS

DESCRIPTION

The OPA680 represents a major step forward in unity gain

stable, voltage feedback op amps. A new internal architec-

ture provides slew rate and full power bandwidth previously

found only in wideband current feedback op amps. A new

output stage architecture delivers high currents with a mini-

mal headroom requirement. These combine to give excep-

tional single supply operation. Using a single +5V supply,

the OPA680 can deliver a 1V to 4V output swing with over

100mA drive current and 150MHz bandwidth. This combi-

nation of features makes the OPA680 an ideal RGB line

driver or single supply ADC input driver.

The OPA680’s low 6.4mA supply current is precisely

trimmed at 25

°C. This trim, along with low temperature

drift, guarantees lower maximum supply current than com-

peting products. System power may be reduced further using

the optional disable control pin. Leaving this disable pin

open, or holding it high, will operate the OPA680 normally.

If pulled low, the OPA680 supply current drops to less than

300

µA while the output goes to a high impedance state. This

feature may be used for either power savings or to imple-

ment video MUX applications.

OPA680

OPA680

OPA680

OPA680

OPA680 RELATED PRODUCTS

SINGLES

DUALS

TRIPLES

Voltage Feedback

OPA680

OPA2680

OPA3680

Current Feedback

OPA681

OPA2681

OPA3681

Fixed Gain

OPA682

OPA2682

OPA3682

PDS-1426E

Printed in U.S.A. October, 1999

OPA680

+5V

DIS

40

Ω

2Vp-p

1.15k

Ω

1.2k

Ω

0.1

µF

22pF

ADS822

10-Bit

40MSPS

3k

Ω

Gnd

CM

+2.5V

Analog

Input

REFB

+5V

Clock

REFT

0.1

µF

+1.5V

3k

Ω

+3.5V

0.1

µF

0.1

µF

0.1

µF

0.5Vp-p

400

Ω

50

Ω

Single-Supply, High Speed, 10-Bit Digitzer

SBOS083