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TDA4884 датащи(PDF) 13 Page - NXP Semiconductors

номер детали TDA4884
подробное описание детали  Advanced monitor video controller for OSD
PDF  28 Pages
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производитель  PHILIPS [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA4884 датащи(HTML) 13 Page - NXP Semiconductors

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1997 Nov 26
13
Philips Semiconductors
Product specification
Three gain control video pre-amplifier for OSD
TDA4884
Fig.4 Signal processing.
handbook, full pagewidth
MHA920
video portion
black level equal to
artificial black level
+ VBE
by input clamping (approximately 3 V)
input clamping pulse
at pin 10
internal signal
behind input stage
input signals
output signals
(pins 19, 16 and 13)
sync clipping to
artificial black level
horizontal blanking and
output clamping pulse
at pin 9
horizontal flyback and output clamping
black level equal to artificial
black level by input clamping and
storage by coupling capacitor
video signal
inserted artificial black level
signal at CRT cathode
at nominal gain and
maximum brightness setting
and
maximum/nominal/
minimum contrast setting
at nominal gain and
contrast setting
(brightness setting as well as
horizontal blanking via grid 1)
at nominal contrast and
maximum/nominal/
minimum gain setting
black level
ground
ultra black level
reference black level
reference black level
high tension supply
voltage (e.g. 90 V)
nom
max
min
nom
max
min
input signal at
pins 2, 5 and 8
with sync (on green)



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