
1999 Jul 21
4
Philips Semiconductors
Product specication
Alignment-free multistandard vision and
FM sound IF-PLL demodulator
TDA9880
Notes
1. Values of video and sound parameters can be decreased at VP = 4.5 V.
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
Vo(intc)(rms).
Bintc(3dB)(ul)
upper limit
3 dB intercarrier
bandwidth
7.5
9
MHz
Vo(AF)(8)(rms)
audio output signal voltage at pin 8
(RMS value)
25 kHz FM deviation;
75
s de-emphasis
400
500
600
mV
THD8
total harmonic distortion at pin 8
0.15
0.5
%
BAF(3dB)
3 dB audio frequency bandwidth
without de-emphasis;
dependent on loop lter at
pin 4
100
120
kHz
S/NW(AF)
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
s de-emphasis;
AM: f = 1 kHz; m = 0.3
referenced to 25 kHz
FM deviation
40
46
dB
PSRR8
power supply ripple rejection at pin 8 fripple = 70 Hz; see Fig.9
14
20
dB
f
FM
frequency window of digital
acquisition help for FM demodulator
±225
kHz
fref(15)
frequency of reference signal at
pin 15
4.0
MHz
Vref(15)(rms)
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
()