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TDA9554PS Datasheet(PDF) 119 Page - NXP Semiconductors

Part # TDA9554PS
Description  TV signal processor-Teletext decoder with embedded m-Controller
PDF  125 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA9554PS Datasheet(HTML) 119 Page - NXP Semiconductors

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2000 Jun 22
119
Philips Semiconductors
Tentative Device Specification
TV signal processor-Teletext decoder with
embedded
µ-Controller
TDA955X/6X/8X PS/N1 series
TEST AND APPLICATION INFORMATION
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.49.
Resistor REW determines the gain of the EW output stage.
Resistor Rc determines the reference current for both the
vertical sawtooth generator and the geometry processor.
The preferred value of Rc is 39 kΩ which results in a
reference current of 100
µA (Vref = 3.9 V).
The value of REW must be:
Example: With Vref = 3.9 V; Rc =39kΩ and Vscan = 120 V
then REW =68kΩ.
R
EW
R
c
V
scan
18
V
ref
×
-----------------------
×
=
handbook, full pagewidth
MLA744 - 1
TDA8366
HORIZONTAL
DEFLECTION
STAGE
DIODE
MODULATOR
VDD
V scan
V EW
Rew
EW output
stage
EWD
Csaw
100 nF
(5%)
Vref
Rc
39 k
Ω
(2%)
I ref
43
49
50
Fig. 49 East-West output stage.
TDA
935X
21
28
27
UOC series
15
20
21



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