EL4451CS 데이터 시트보기 (PDF) - Elantec -> Intersil

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EL4451CS

Wideband Variable-Gain Amplifier, Gain of 2

Elantec -> Intersil 

EL4451C

Wideband Variable-Gain Amplifier Gain of 2

Applications Information Contd

A voltage-controlled equalizer and cable driver

can be constructed so

Equalization and Line Driver Amplifier

The main signal path is via the REF pin This

ensures maximum signal linearity while the mul-

tiplier input is used to allow a variable amount of

frequency-shaped input from R1 R2 and C For

optimum linearity the multiplier input is attenu-

ated by R1 and R2 This may not be necessary

depending on input signal amplitude and R1

might be set to 0 R1and R2 should be set to pro-

vide sufficient peaking depending on cable high-

frequency losses at maximum gain RF and RG

are chosen to provide the desired circuit gain in-

cluding backmatch resistor loss

4451 – 35

11

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