−

+

22 k

Ω

100 k

Ω

C

5534

C

NE5534, NE5534A, SA5534, SA5534A

www.ti.com

SLOS070D – JULY 1979 – REVISED NOVEMBER 2014

9 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

9.1 General Application

The input offset voltage of operational amplifiers (op amps) arises from unavoidable mismatches in the

differential input stage of the op-amp circuit caused by mismatched transistor pairs, collector currents, current-

gain betas (

β), collector or emitter resistors, and so on. The input offset pins allow the designer to adjust for

these mismatches by external circuitry. These input mismatches can be adjusted by putting resistors or a

potentiometer between the inputs as shown in Figure 10. A potentiometer can be used to fine tune the circuit

during testing or for applications which require precision offset control. More information about designing using

the input-offset pins, see Offset Voltage of Operational Amplifiers (SLOA045).

Frequency Compensation and Offset-Voltage Nulling Circuit

Figure 10. Application Circuit

Copyright © 1979–2014, Texas Instruments Incorporated

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