EL4095C データシートの表示（PDF） - Elantec -> Intersil

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EL4095C

Video Gain Control/Fader/Multiplexer

Elantec -> Intersil 

EL4095C

Video Gain Control Fader Multiplexer

Application Information Contd

Leveling Circuit with 0 5 s AV s 2

Here the A input channel is configured for a gain

of a2 and the B channel for a gain of a1 with

its input attenuated by The connection is vir-

tuous because the distortions do not increase

monotonically with reducing gain as would the

simple single-input connecton

4095 – 29

For video levels however these constants can

give fairly high differential gain error The prob-

lem occurs for large inputs Assume that a

‘‘twice-size’’ video input occurs The A-side stage

sees the full amplitude but the gain would be set

to 100% B-input gain to yield an overall gain of

14

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