1999 Jul 21

4

Philips Semiconductors

Product specification

Alignment-free multistandard vision and

FM sound IF-PLL demodulator

TDA9880

Notes

2. The sound carrier frequencies (depending on TV standard) are attenuated by the integrated sound carrier traps

(see Figs 13 to 18);

H (s) is the absolute value of transfer function.

3. S/N is the ratio of black-to-white amplitude to the black level noise voltage (RMS value, pin 13). B = 4.2 MHz

(M/N standard) or B = 5.0 MHz (B/G, I and D/K standard) weighted in accordance with

“CCIR 567”.

4. The intercarrier output signal at pin 11 can be calculated by the following formula taking into account the internal

video signal with 1.1 V (p-p) as a reference:

where:

= correction term for RMS value,

= sound-to-picture carrier ratio at VIF input (pins 1 and 2) in dB,

6 dB = correction term of internal circuitry and

±3 dB = tolerance of video output and intercarrier output amplitude

upper limit

−3 dB intercarrier

bandwidth

7.5

9

−

MHz

audio output signal voltage at pin 8

(RMS value)

25 kHz FM deviation;

75

µs de-emphasis

400

500

600

mV

total harmonic distortion at pin 8

−

0.15

0.5

%

−3 dB audio frequency bandwidth

without de-emphasis;

dependent on loop filter at

pin 4

100

120

−

kHz

weighted signal-to-noise ratio of

audio signal

black picture

50

56

−

dB

white picture

45

51

−

dB

6 kHz sine wave

(black-to-white modulation)

40

46

−

dB

sound carrier

subharmonics;

f = 2.25 MHz

±3 kHz

35

40

−

dB

α

AM(sup)

AM suppression of FM demodulator

75

µs de-emphasis;

AM: f = 1 kHz; m = 0.3

referenced to 25 kHz

FM deviation

40

46

−

dB

14

20

−

dB

∆f

FM

frequency window of digital

acquisition help for FM demodulator

−±225

−

kHz

frequency of reference signal at

pin 15

−

4.0

−

MHz

amplitude of reference signal source

at pin 15 (RMS value)

operation as input terminal

80

−

400

mV

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

V

o(intc)(rms)

1.1 V (p-p)

1

22

-----------

×

10

V

iSC

()

V

iPC

()

--------------- dB

() 6 dB 3 dB

±

+

20

----------------------------------------------------------------

×

=

1

22

-----------

V

iSC

()

V

iPC

()

--------------- dB

()