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TDA9885

I²C-bus controlled single and multistandard alignment-free IF-PLL demodulators

Philips Electronics 

Philips Semiconductors

I2C-bus controlled single and multistandard

alignment-free IF-PLL demodulators

Product specification

TDA9885; TDA9886

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

Audio part

Vo(AF)(rms)

THD

BAF(−3dB)

S/NW(AF)

αAM(sup)

PSRRAUD

Vo(intc)(rms)

AF output voltage (RMS value)

total harmonic distortion of audio

signal

−3 dB AF bandwidth

weighted signal-to-noise ratio of

audio signal

AM suppression of

FM demodulator

power supply ripple rejection on

pin AUD

IF intercarrier output level

(RMS value)

27 kHz FM deviation;

430

50 µs de-emphasis

FM: 27 kHz FM deviation; −

50 µs de-emphasis

AM: m = 54 %

−

without de-emphasis;

80

dependent on FM-PLL filter

FM: 27 kHz FM deviation; 52

50 µs de-emphasis;

vision carrier unmodulated

AM: m = 54 %

45

50 µs de-emphasis;

40

AM: f = 1 kHz and

m = 54 %; referenced to

27 kHz FM deviation

fripple = 70 Hz; see Fig.6

for AM

20

for FM

14

QSS mode; SC1; SC2 off 90

L standard;

90

without modulation

intercarrier mode;

−

PC/SC1 = 20 dB; SC2 off;

note 6

540 650 mV

0.15 0.50 %

0.5 1.0 %

100 −

kHz

56

−

dB

50

−

dB

46

−

dB

26

−

dB

20

−

dB

140 180 mV

140 180 mV

75

−

mV

Reference frequency

fref

Vref(rms)

reference signal frequency

reference signal voltage

(RMS value)

note 7

−

4

operation as input terminal 80

−

−

MHz

400 mV

Notes

1. Values of video and sound parameters can be decreased at VP = 4.5 V.

2. For applications without I2C-bus, the time constant (R × C) at the supply must be >1.2 µs (e.g. 1 Ω and 2.2 µF).

3. Condition: luminance range (5 steps) from 0 % to 100 %.

4. AC load: CL < 20 pF and RL > 1 kΩ. The sound carrier frequencies (depending on the TV standard) are attenuated

by the integrated sound carrier traps (see Figs 13 to 18; H (s) is the absolute value of transfer function).

5. S/NW is the ratio of the black-to-white amplitude to the black level noise voltage (RMS value measured on pin CVBS).

B = 5 MHz weighted in accordance with “CCIR 567”.

2003 Oct 02

5

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