Differential

Amplifier

Voltage

Amplifier

High Current

Output Stage with

Current Limiting

Biasing

V-

V+

OPA541

SBOS153B – SEPTEMBER 2000 – REVISED JANUARY 2016

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7 Detailed Description

7.1 Overview

The OPA541 uses a JFET input stage, followed by a main voltage gain stage, and a class A/B high current

output stage.

7.2 Functional Block Diagram

7.3 Feature Description

The OPA541 JFET input stage reduces circuit loading and input bias currents. The class A/B high current output

stage incorporates temperature compensated biasing to reduce crossover distortion. The output stage also

includes a user settable current limit for amplifier and circuit protection.

7.4 Device Functional Modes

The OPA541 has a single functional mode. The OPA541 is operational when the power supply voltage exceeds

10 V (±5 V) and less than 80 V (±40 V).

8

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