TDA9885_TDA9886_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 16 December 2008 3 of 56
NXP Semiconductors
TDA9885; TDA9886
I
2
C-bus controlled multistandard alignment-free IF-PLL demodulators
[1] Values of video and sound parameters can be decreased at V
P
= 4.5 V.
[2] The sound carrier trap can be bypassed by switching the I
2
C-bus. In this way the full composite video spectrum appears at pin CVBS.
The amplitude is 1.1 V (p-p).
[3] Condition: luminance range (5 steps) from 0 % to 100 %.
[4] AC load; C
L
< 20 pF and R
L
>1kΩ. The sound carrier frequencies (depending on TV standard) are attenuated by the integrated sound
carrier traps (see Figure 15 to Figure 20; H (s) is the absolute value of transfer function).
[5] S/N is the ratio of black-to-white amplitude to the noise voltage (RMS value measured on pin CVBS and tested at video black level,
‘quiet line’). Noise analyzer settings: B = 5 MHz, 200 kHz high-pass and sound carrier trap on. In case of S/N
W
weighted in accordance
with
“ITU-T J.61”
. Measurements taken for B/G standard.
[6] The intercarrier output signal at pin SIOMAD can be calculated by the following formula taking into account the internal video signal with
1.1 V (p-p) as a reference: and , where: is the
correction term for RMS value, is the sound-to-picture carrier ratio at pins VIF1 and VIF2 in dB, 6 dB is the correction term
of internal circuitry and ±3 dB is the tolerance of video output and intercarrier output V
o(intc)(rms)
.
S/N
W
weighted signal-to-noise
ratio
unified weighting filter (
“ITU-T J.61”
);
see
Figure 13
[5]
56 59 - dB
PSRR
CVBS
power supply ripple
rejection on pin CVBS
f
ripple
= 70 Hz; video signal; grey level;
positive and negative modulation;
see
Figure 8
20 25 - dB
AFC
stps
AFC control steepness definition: ∆I
AFC
/ ∆f
VIF
0.85 1.05 1.25 µA/kHz
Audio part
V
o(AF)(rms)
AF output voltage
(RMS value)
27 kHz FM deviation; 50 µs de-emphasis 430 540 650 mV
THD total harmonic distortion 25 kHz FM deviation; 50 µs de-emphasis - 0.15 0.50 %
54 % AM modulation - 0.5 1.0 %
B
AF(−3dB)
−3 dB AF bandwidth without de-emphasis; measured with
FM-PLL filter of
Figure 26
80 100 - kHz
S/N
W(AF)
weighted signal-to-noise
ratio of audio signal
black picture; see Figure 21 50 56 - dB
in accordance with
“ITU-R BS.468-4”
45 50 - dB
α
AM(sup)
AM suppression of
FM demodulator
referenced to 27 kHz FM deviation;
50 µs de-emphasis; AM: f = 1 kHz;
m=54%
40 46 - dB
PSRR
AM
power supply ripple
rejection
see Figure 8 20 26 - dB
PSRR
FM
power supply ripple
rejection
f
ripple
= 70 Hz; see Figure 8 14 20 - dB
V
o(intc)(rms)
IF intercarrier output level
(RMS value)
QSS mode; SC
1
; SC
2
off 90 140 180 mV
L standard; without modulation 90 140 180 mV
intercarrier mode; PC / SC
1
=20dB;
SC
2
off
[6]
-75-mV
Reference frequency input; pin REF
f
ref
reference signal
frequency
[7]
-4-MHz
V
ref(rms)
reference signal voltage
(RMS value)
operation as input terminal 80 - 400 mV
Table 1. Quick reference data
…continued
Symbol Parameter Conditions Min Typ Max Unit
V
o(intc)(rms)
1.1
1
22
----------
× 10
r
× V= r
1
20
------
V
iSC()
V
iPC()
----------------
dB()6dB 3dB±+
×=
1
22
----------
V
iSC()
V
iPC()
----------------
dB()
