EL4095CS datasheet(16/19 Pages) INTERSIL

Part #	EL4095CS

Description	Video Gain Control/Fader/Multiplexer

PDF	19 Pages

Scroll/Zoom	100%

Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

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16 / 19 page

The EL4095 is connected as a unity-gain fader, with an LRC

peaking network connected to the A-input and an RC rolloff

network connected to the B-input. The plot shows the range

of peaking controlled by the VGAIN input. This circuit would

be useful for flattening the frequency response of a system,

or for providing equalization ahead of a lossy transmission

line.

Noise

The electrical noise of the EL4095 has two components: the

voltage noise in series with +VIN is 5nV√Hz wideband, and

there is a current noise injected into -VIN of 35pA√Hz. The

output noise will be

and the input-referred noise is

where AV is the fed-back gain of the EL4095. Here is a plot

of input-referred noise vs AV:

FIGURE 6. VARIABLE PEAKING FILTER

n, out

n, input

()

n, input

()

n, input

referred

–

n, input

()

n, input

F AV

⁄

()

FIGURE 7. INPUT-REFERRED NOISE VS

CLOSED-LOOP GAIN

EL4095

EL4095CS Datasheet(PDF) 16 Page - Intersil Corporation