TDA8841

Manufacturer Part NumberTDA8841
DescriptionI2C-bus controlled PAL/NTSC TV processor
ManufacturerPhilips Semiconductors
TDA8841 datasheet
 


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Philips Semiconductors
2
I
C-bus controlled PAL/NTSC/SECAM TV
processors
East-West output stage
In order to obtain correct tracking of the vertical and
horizontal EHT-correction, the EW output stage should be
dimensioned as illustrated in Fig.24.
Resistor R
determines the gain of the EW output stage.
EW
Resistor R
determines the reference current for both the
c
vertical sawtooth generator and the geometry processor.
The preferred value of R
is 39 k which results in a
c
reference current of 100 A (V
ref
handbook, full pagewidth
39 k
(2%)
December 16, 1997
The value of R
R
EW
Example: With V
then R
= 3.9 V).
R ew
884X
TDA
TDA8366
45
43
EWD
EW output
52
51
stage
50
49
V ref
R c
C saw
100 nF
(5%)
I ref
Fig.24 East-West output stage.
60
Tentative Device Specification
TDA884X/5X-N2 series
must be:
EW
V
scan
=
R
---------------------- -
c
18 V
ref
= 3.9 V; R
= 39 k and V
ref
c
= 68 k .
EW
V DD
HORIZONTAL
V scan
DEFLECTION
STAGE
DIODE
V EW
MODULATOR
MLA744 - 1
= 120 V
scan