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參數(shù)資料
| 型號(hào)： | TDA9811 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | Multistandard VIF-PLL with QSS-IFand AM demodulator(帶QSS-IF和AM解調(diào)器的多標(biāo)準(zhǔn)的VIF-PLL) |
| 中文描述： | AUDIO/VIDEO DEMODULATOR, PDIP32 |
| 封裝： | 0.400 INCH, PLASTIC, SOT-232, SDIP-32 |
| 文件頁數(shù)： | 16/36頁 |
| 文件大?。?/td> | 228K |
| 代理商： | TDA9811 |
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1998 Feb 09
16
Philips Semiconductors
Product specification
Multistandard VIF-PLL with QSS-IF and
AM demodulator
TDA9811
4.
Loop bandwidth BL = 75 kHz (natural frequency f
n
= 11 kHz; damping factor d
≈
3.5; calculated with sync level within
gain control range). Resonance circuit of VCO: Q
0
> 50; C
ext
= 8.2 pF
±
0.25 pF; C
int
≈
8.5 pF (loop voltage
approximately 2.7 V).
Temperature coefficient of external LC-circuit is equal to zero.
V
i IF
= 10 mV RMS;
f = 1 MHz (VCO frequency offset related to picture carrier frequency); white picture
video modulation.
V
i IF
signal for nominal video signal.
Measurements taken with SAW filter G3962 (sound carrier suppression: 40 dB); loop bandwidth BL = 75 kHz:
a) Modulation VSB; sound carrier
off
; f
video
> 0.5 MHz.
b) Sound carrier
on
; SIF SAW filter L9453; f
video
= 10 kHz to 10 MHz.
The 7 dB buffer gain accounts for 1 dB loss in the sound trap. Buffer output signal is typical 2 V (p-p), in event of
CVBS video amplifier output typical 1 V (p-p). If no sound trap is applied a 330
resistor must be connected from
output to input (from pin 21 to pin 22).
10. The leakage current of the AGC capacitor should not exceed 1
μ
A at B/G standard respectively 10 nA current at
L standard. Larger currents will increase the tilt.
11. S/N is the ratio of black-to-white amplitude to the black level noise voltage (RMS value, pin 10). B = 5 MHz weighted
in accordance with “CCIR 567”
5.
6.
7.
8.
9.
12. The intermodulation figures are defined:
V
at 4.4 MHz
V
0
at 1.1 MHz
V
at 4.4 MHz
V
0
at 3.3 MHz
; α
1.1
value at 1.1 MHz referenced to black/white signal;
3.6dB
; α
3.3
value at 3.3 MHz referenced to colour carrier.
13. Response speed valid for a VIF input level range of 200
μ
V up to 70 mV.
14. To match the AFC output signal to different tuning systems a current source output is provided. The test circuit is
given in Fig.7. The AFC-steepness can be changed by the resistors at pin 23.
15. Depending on the ratio
C/C
0
of the LC resonant circuit of VCO (Q
0
> 50; see note 4; C
0
= C
int
+ C
ext
).
16. The V
o QSS
output (pin 20) is analysed by a test demodulator TDA9820. The S/N of this equipment should be higher
than 60 dB, related to a deviation of
±
27 kHz, in accordance with “CCIR 468-4”
17. For all S/N measurements the used vision IF modulator has to meet the following specifications:
a) Incidental phase modulation for black-to-white jump less than 0.5 degrees.
b) QSS AF performance, measured with the television-demodulator AMF2 (audio output, weighted S/N ratio) better
than 60 dB (deviation 27 kHz) for 6 kHz sine wave black-to-white video modulation.
c) Picture-to-sound carrier ratio; PC/SC
1
= 13 dB (transmitter).
18. Measurements taken with SAW filter G3962 (Siemens) for vision IF (suppressed sound carrier) and G9350
(Siemens) for sound IF (suppressed picture carrier). Input level V
i SIF
= 10 mV RMS, 27 kHz (54% FM deviation).
19. The PC/SC ratio at pins 1 and 2 is calculated as the addition of TV transmitter PC/SC ratio and SAW filter PC/SC
ratio. This PC/SC ratio is necessary to achieve the S/N (W) values as noted. A different PC/SC ratio will change
these values.
20. Measurements taken with SAW filter L9453 (Siemens) for AM sound IF (suppressed picture carrier).
21. The input voltage has to be V
i
> 2.8 V or open-circuit.
α
1.1
20
-------------------------------------
+
log
=
α
3.3
20
-------------------------------------
log
=
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| TDA9812 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard VIF-PLL and FM-PLL/AM demodulator |
| TDA9812T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard VIF-PLL and FM-PLL/AM demodulator |
| TDA9813T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:VIF-PLL with QSS-IF and dual FM-PLL demodulator |
| TDA9814 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard VIF-PLL with QSS-IF and dual FM-PLL/AM demodulator |
| TDA9814T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard VIF-PLL with QSS-IF and dual FM-PLL/AM demodulator |
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