February 1985

6

Philips Semiconductors

Product specification

Quasi-split-sound circuit

with 5,5 MHz demodulation

TDA2546A

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).

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

S

+W/W

53

58

−

dB

at 5,742 MHz

S

+W/W

51

56

−

dB

6 kHz sine wave

at 5,5 MHz

S

+W/W

50

53

−

dB

at 5,742 MHz

S

+W/W

50

53

−

dB

with black level (vision carrier modulated with sync

pulses only)

at 5,5 MHz

S

+W/W

60

65

−

dB

at 5,742 MHz

S

+W/W

58

63

−

dB

PARAMETER

SYMBOL

MIN.

TYP.

MAX.

UNIT