TDA8841-N2 Philips Semiconductors, TDA8841-N2 Datasheet - Page 60

• Manufacturer Part Number: TDA8841-N2
• Description: I2C-bus controlled PAL/NTSC/SECAM TV processors
• Manufacturer: Philips Semiconductors

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