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參數(shù)資料
| 型號： | 935237510518 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO20 |
| 封裝： | 7.50 MM, PLASTIC, SO-20 |
| 文件頁數(shù)： | 10/42頁 |
| 文件大?。?/td> | 263K |
| 代理商： | 935237510518 |
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1999 Jul 21
18
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. This parameter is tested with 110 mV to ensure maximum input level.
3. This parameter is not tested during production and is only given as application information for designing the television
receiver.
4. Loop bandwidth BL = 70 kHz (damping factor d = 1.9; calculated with sync level within gain control range).
Calculation of the VIF-PLL filter can be done by use of the following formulae:
, valid for d
≥ 1.2
,
where:
KO = VCO steepness
or
; KD = phase detector steepness
;
R = loop resistor; C = loop capacitor; BL3dB = loop bandwidth for 3 dB; d = damping factor.
5. Vi(VIF)(rms) = 10 mV; f = 1 MHz (VCO frequency offset related to picture carrier frequency); white picture video
modulation.
6. Vi(VIF) signal for nominal video signal.
7. Broadband transformer at VIF input. The C/N ratio at VIF input is defined as the VIF input signal (sync level,
RMS value) related to a superimposed 4.2 MHz band-limited white noise signal (RMS value); white picture video
modulation.
8. 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.
9. 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).
10. The intermodulation figures are defined:
;
αd0.92 value at 0.92 MHz referenced to black or white signal;
;
αd2.76 value at 2.76 MHz referenced to chrominance carrier.
11. Measurements taken with SAW filter M1963M (sound shelf: 20 dB); loop bandwidth BL = 70 kHz.
a) Modulation Vestigial Side-Band (VSB); sound carrier off; fvideo > 0.5 MHz.
b) Sound carrier on; fvideo = 10 kHz to 10 MHz.
12. The sound carrier trap can be disabled by switching pin 12 to ground (<0.8 V). In this way the full composite video
spectrum appears at pin 13. The amplitude is 1.1 V (p-p).
13. Response time valid for a VIF input level range of 200
Vto70mV.
Vref(rms)
amplitude of reference signal
source (RMS value)
operation as input
terminal
80
400
mV
Ro(ref)
output resistance of reference
source
4.7
k
CK
decoupling capacitance to
external reference source
operation as input
terminal
22
100
pF
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
BL
3 dB
–
1
2
π
------- KOKDR
=
d
1
2
--- RKOKDC
=
rad
V
--------
2
π
Hz
V
-------
A
rad
--------
αd
0.92
20
V
0 at 3.58 MHz
V
0 at 0.92 MHz
---------------------------------------
3.6 dB
+
log
=
αd
2.76
20
V
0 at 3.58 MHz
V
0 at 2.76 MHz
---------------------------------------
log
=
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