Philips Semiconductors
Quasi-split-sound circuit
with 5,5 MHz demodulation
Product specification
TDA2546A
PARAMETER
SYMBOL
MIN.
TYP. MAX. UNIT
Intercarrier signal-to-noise
(measured behind the FM demodulators)
Signal-to-weighted-noise ratio according to
CCIR 468-2, quasi-peak 2T/20T pulses with white
bars (see also Fig.4)
at 5,5 MHz
at 5,742 MHz
6 kHz sine wave
at 5,5 MHz
at 5,742 MHz
with black level (vision carrier modulated with sync
pulses only)
at 5,5 MHz
at 5,742 MHz
S+W/W
S+W/W
S+W/W
S+W/W
S+W/W
S+W/W
53
58
−
dB
51
56
−
dB
50
53
−
dB
50
53
−
dB
60
65
−
dB
58
63
−
dB
Notes to the characteristics
1. Incidential phase on the vision carrier, caused by TV-transmitter, has to be less than 0,5 degrees for black to white
transient.
(Equivalent to S+W/W = 56 dB for 6 kHz sine wave).
February 1985
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