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2004 Aug 25
5
Philips Semiconductors
Product specification
I2C-bus controlled multistandard alignment-free
IF-PLL demodulator with FM radio
TDA9887
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 >1kΩ. The sound carrier frequencies (depending on the TV standard) are attenuated
by the integrated sound carrier traps (see Figs 15 to 20;
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”.
Audio part
Vo(AF)(rms)
AF output voltage (RMS value)
27 kHz FM deviation;
50
µs de-emphasis
430
540
650
mV
THD
total harmonic distortion of audio
signal
FM: 27 kHz FM deviation;
50
µs de-emphasis
0.15
0.50
%
AM: m = 54 %
0.5
1.0
%
BAF(−3dB)
−3 dB AF bandwidth
without de-emphasis;
dependent on FM-PLL filter
80
100
kHz
S/NW(AF)
weighted signal-to-noise ratio of
audio signal
FM: 27 kHz FM deviation;
50
µs de-emphasis;
vision carrier unmodulated
52
56
dB
AM: m = 54 %
45
50
dB
αAM(sup)
AM suppression of
FM demodulator
50
µs de-emphasis;
AM: f = 1 kHz and
m = 54 %; referenced to
27 kHz FM deviation
40
46
dB
PSRRAUD
power supply ripple rejection on
pin AUD
fripple = 70 Hz; see Fig.6
for AM
20
26
dB
for FM
14
20
dB
Vo(intc)(rms)
IF intercarrier output level
(RMS value)
QSS mode; SC1; SC2 off
90
140
180
mV
L standard;
without modulation
90
140
180
mV
intercarrier mode;
PC/SC1 = 20 dB; SC2 off;
note 6
75
mV
Radio part
AFCstps
AFC control steepness
definition:
∆IAFC/∆fRIF
0.85
1.05
1.25
µA/kHz
Vi(FM)(rms)
IF intercarrier input level on
pin FMIN for gain controlled
operation of FM-PLL (RMS value)
radio mode and FM external
mode; see Table 16
1
100
mV
Reference frequency
fref
reference signal frequency
note 7
4
MHz
Vref(rms)
reference signal voltage
(RMS value)
operation as input terminal
80
400
mV
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT


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