TDA4887PS datasheet(28/68 Pages) PHILIPS

28 / 68 page

2001 Oct 19

Philips Semiconductors

Product speciﬁcation

160 MHz bus-controlled monitor video

preampliﬁer

TDA4887PS

handbook, full pagewidth

MHB945

contrast control data byte

colour signal

amplitude

with respect to

maximum colour

signal amplitude

(dB)

(1)

(2)

(3)

−45

00H

20H

40H

60H

80H

A0H

C0H

E0H

FFH

−6

−12

−3

contrast

modulation

range

Fig.8 Contrast control characteristic with subcontrast, limiting or contrast modulation.

(1) No contrast reduction.

(2) Partial contrast reduction by subcontrast, limiting or contrast modulation.

(3) Full contrast reduction by subcontrast, limiting or contrast modulation.

handbook, full pagewidth

MHB946

OSD contrast control data byte

OSD signal

amplitude

with respect to

maximum colour

signal amplitude

(%)

00H

0FH

(1)

(2)

(3)

maximum colour signal amplitude

maximum OSD signal amplitude

Fig.9 OSD contrast control characteristic with subcontrast, limiting or contrast modulation.

(1) No OSD contrast reduction.

(2) Partial OSD contrast reduction by subcontrast, limiting or contrast modulation.

(3) Full OSD contrast reduction by subcontrast, limiting or contrast modulation.

TDA4887PS Datasheet(PDF) 28 Page - NXP Semiconductors

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