R2

3 W

R4

5 kW

R3

1 kW

R2

21.5 kW

VBIAS

(from the Level Shifter)

I

PHOTO

A2

A1

A3

A4

A5

V+

V-

VREF

VERR

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LOG114EVM

The high-current linearity correction circuit (refer to Figure 4) creates an error signal that is proportional to

input current I

resulting output signal. The signal at the output from amplifier A5 is then coupled to the input of amplifier

A4 in a manner that subtracts the error signal from the output of the EVM, V

Figure 4. High-Current Linearity Correction Circuit

5

SBOU110

– September 2011

LOG114EVM User Guide

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