AD Rail-to-Rail High Output Current Operational Amplifiers OP179 OP279 Data Handbook Specifications User Manual

Rail-to-Rail High Output Current Operational Amplifiers OP179/OP279 PIN CONFIGURATIONS

FEATURES Rail-to-Rail Inputs and Outputs

5-Lead SOT-23-5

High Output Current: 60 m A

(RT-5)

Single Supply: 5 V to 12 V Wide Bandwidth: 5 MHz

OP179

High Slew Rate: 3 V/s V–OUT A Low Distortion: 0.01%

Unity-Gain Stable

No Phase Reversal IN A+IN A

Short-Circuit Protected Drives Capacitive Loads: 10 n F

8-Lead SOIC

APPLICATIONS

(S Suffix)

Multimedia Telecom

DAA Transformer Driver OP179 NC NC

LCD Driver IN A V+ Low Voltage Servo Control +IN A OUT A Modems NC FET Drivers

NC = NO CONNECT

8-Lead SOIC and TSSOP

GENERAL DESCRIPTION

SO-8 (S) and RU-8

The OP179 and OP279 are rail-to-rail, high output current, single-supply amplifiers. They are designed for low voltage www.BDTIC.com/ADI

applications that require either current or capacitive load drive OUT A V+

capability. The OP179/OP279 can sink and source currents of OUT B

OP279
IN A

±60 m A (typical) and are stable with capacitive loads to 10 n F. +IN A IN B

+IN B

Applications that benefit from the high output current of the OP179/OP279 include driving headphones, displays, transform- ers and power transistors. The powerful output is combined with a unique input stage that maintains very low distortion with wide common-mode range, even in single supply designs. Very good audio performance can be attained when using the

OP179/OP279 in 5 volt systems. THD is below 0.01% with a

The OP179/OP279 can be used as a buffer to provide much

Ω load, and noise is a respectable 21 n V/√Hz. Supply current

greater drive capability than can usually be provided by CMOS

is less than 3.5 m A per amplifier.

outputs. CMOS ASICs and DAC often have outputs that can swing to both the positive supply and ground, but cannot drive The single OP179 is available in the 5-lead SOT-23-5 package. more than a few milliamps. It is specified over the industrial (–40°C to +85°C) tempera-

ture range.

Bandwidth is typically 5 MHz and the slew rate is 3 V/µs, making these amplifiers well suited for single supply applications that The OP279 is available in 8-lead TSSOP and SO-8 surface require audio bandwidths when used in high gain configurations. mount packages. They are specified over the industrial (–40°C Operation is guaranteed from voltages as low as 4.5 V, up to 12 V. to +85°C) temperature range.

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