TDA5950X Siemens Semiconductor, TDA5950X Datasheet - Page 16

• Manufacturer Part Number: TDA5950X
• Description: Video and Sound IF with FM-PLL Demodulator/ AFC and V & S SCART
• Manufacturer: Siemens Semiconductor

FS: 04/93
AFC
Tuner AGC
Alignment Instructions
At a video carrier input level of V
demodulator tank cicuit is preliminarily aligned until a max. video signal V
suitable video test signal can be used for modulation. The AGC voltage V
and the max. videosignal is obtained when fine-aligning the demodulator tank circuit. The alignment is not critical due
to relatively large bandwidth of the demodulator tank circuit. Fine-tuning to intercarrier S/N, differential phase or 2T
pulse characteristics is possible.
SIEMENS AG
A
temperature range. Typical characteristics are the median of the production.
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HL DOK
39
40
41
#
C / DC characteristics involve the spread of values guaranteed within the specified supply voltage and ambient
Parameter
AFC-control steepness
Sink current
Threshold range
for del.Tuner-AGC
Symbol
I
V
1
23/24
IF
I
10
/ f
= 4 mV
V66047-S679-C100-G2
AC / DC Characteristics
rms
R
no tuner gain
reduction
max. tuner gain
reduction
R
Test
Conditions
2
2
, f
= 4.7k
= 0
TDA 5950X
PC
= 38,9 MHz, and a superimposed AGC voltage of V
Circuit
Test
3
14pp
is reduced until the signal is approx. 1 V
IC-SPECIFICATION
is obtained at the video output. Any
Min
0.6
2.5
50
0
Typ
0.8
3.5
Max
1.0
10
5
3
= 1,5 V, the
26.10.94
Units
Page 15
mA
mV
mV
A/kHz
A
pp