TDA9816M datasheet(22/44 Pages) PHILIPS

22 / 44 page

1997 Nov 19

Philips Semiconductors

Preliminary speciﬁcation

Multistandard multimedia IF-PLL and FM

radio demodulator

TDA9816M

20. Measurements taken with SAW filter K3953 for vision and sound IF (suppressed sound carrier) and K9453 for

sound IF (suppressed picture carrier). Input level Vi(SIF)(rms) = 10 mV, 27 kHz (54% FM deviation).

21. The PC/SC1 ratio at pins 1 and 2 is calculated as the addition of TV transmitter PC/SC1 ratio and SAW filter PC/SC1

ratio. This PC/SC1 ratio is necessary to achieve the S/NW values as noted. A different PC/SC1 ratio will change

these values.

22. Measurements taken with SAW filter G1962 (sound shelf: 20 dB) for vision and sound IF. Pin 27 and/or pin 28 has

to be connected to ground for switching the single reference QSS mixer to intercarrier mode.

23. Measurements taken with SAW filter K9453 (Siemens) for AM sound IF (suppressed picture carrier).

24. The RIF amplifier output (pin 14) has to be connected to a multistandard application ceramic filter for

5.5, 6.0 and 10.7 MHz. This total load constitutes an impedance of 250

Ω.

25. d3 tested by using two signals with frequencies of f1 = 10.5 MHz and f2 = 10.7 MHz with a level Vi4(max)(rms) for each

signal. d3 is the ratio between intermodulation product at 10.3 MHz and output level of Vi4(max)(rms).

26. The control steepness of the radio AFC detector is dependent on the characteristic of the ceramic resonator, pin 24.

The figure given here will be obtained when applying a typical resonator of the type CDA 10.7 MC1-A (Murata).

The spreading of the control steepness depends on the spreading of the ceramic resonator characteristic

(see Fig.13).

Table 1

Input frequencies and carrier ratios

Table 2

Switch logic

DESCRIPTION

SYMBOL

B/G STANDARD

L STANDARD

L ACCENT

STANDARD

RADIO

UNIT

Picture/IF carrier

fPC or fIF

38.9

33.9

10.7

MHz

Sound carrier

fSC1

33.4

32.4

40.4

−

MHz

fSC2

33.158

−−

−

MHz

Picture-to-sound carrier

PC/SC1

−

PC/SC2

−−

−

FUNCTION

LP2

LP1

LP0

REMARKS

Power-down

TV mode

B/G standard

negative

modulation

011

L accent standard

positive

modulation

000

L standard

Radio mode

AFC

soft mute active

RIF level dependent

(25 dB)

RIF level

AFC

forced mute active

forced mute (70 dB)

RIF level

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