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參數(shù)資料
| 型號(hào)： | TDA9808 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | Single standard VIF-PLL with QSS-IF and FM-PLL demodulator |
| 中文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP20 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-20 |
| 文件頁數(shù)： | 17/36頁 |
| 文件大?。?/td> | 218K |
| 代理商： | TDA9808 |
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1999 Jun 04
17
Philips Semiconductors
Product specification
Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator
TDA9808
11. Measurements taken with SAW filter M3951 (sound carrier suppression: 32 dB); loop bandwidth BL = 70 kHz:
a) Modulation VSB; sound carrier off; f
video
> 0.5 MHz.
b) Sound carrier on; SIF SAW filter M9352; f
video
= 10 kHz to 10 MHz.
12. Response speed valid for a VIF input level range of 200
μ
V up to 70 mV.
13. To match the AFC output signal to different tuning systems a current source output is provided. The test circuit is
given in Fig.10. The AFC-steepness can be changed by the resistors at pin 13.
14. 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
).
15. Source impedance: 2.3 k
in parallel to 12 pF (SAW filter); f
IF
= 38.9 MHz.
16. Input level for second IF from an external generator with 50
source impedance, AC-coupled with 10 nF capacitor,
f
mod
= 400 Hz, 25 kHz (50% FM deviation) of audio reference. A VIF/SIF input signal is not permitted. Pins 5 and 17
have to be connected to positive supply voltage for minimum IF gain. S/N and THD measurements are taken at
75
μ
s de-emphasis (modulator pre-emphasis has to be activated). The FM demodulator steepness
V
o(AF)
/
f
AF
is
positive.
a) Second IF input level 10 mV RMS.
17. Measured at de-emphasis circuitry with an FM deviation of 25 kHz (f
mod
= 400 Hz) the typical AF output signal is
500 mV RMS (R
x
= 0
). By using R
x
= 470
the AF output signal is attenuated by 6 dB (250 mV RMS).
For handling a frequency deviation of more than 53 kHz the AF output signal has to be reduced by using R
x
in order
to avoid clipping (THD < 1.5%). For an FM deviation up to 100 kHz an attenuation of 6 dB is recommended with
R
x
= 470
.
18. The leakage current of the decoupling capacitor (22
μ
F) should not exceed 1
μ
A.
19. 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 25 kHz) for 6 kHz sine wave black-to-white video modulation.
c) Picture-to-sound carrier ratio; PC/SC
1
= 7 dB (transmitter).
20. The PC/SC
1
ratio is calculated as the addition to TV transmitter PC/SC
1
ratio and SAW filter PC/SC
1
ratio.
This PC/SC
1
ratio is necessary to achieve the S/N
W(audio)
values as noted. A different PC/SC
1
ratio will change these
values.
21. Measurements taken with SAW filter M3951 for vision IF (suppressed sound carrier, minimum 25 dB) and M9352 for
sound IF (suppressed picture carrier). Input level V
i(SIF)(rms)
= 10 mV, 25 kHz (50% FM deviation). Measurements in
accordance with “CCIR 468-4”
Table 1
Input frequencies and carrier ratios
SYMBOL
DESCRIPTION
B/G STANDARD
M, N STANDARD
UNIT
f
pc
or f
IF
f
SC1
f
SC2
SC
1
SC
2
picture/IF carrier
sound carrier
38.9
33.4
33.158
13
20
45.75/58.75
41.25/54.25
7
MHz
MHz
MHz
dB
dB
picture-to-sound carrier
相關(guān)PDF資料 |
PDF描述 |
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| TDA9808T | Single standard VIF-PLL with QSS-IF and FM-PLL demodulator |
| TDA9809 | Single standard multimedia IF-PLL and FM radio demodulator |
| TDA9809M | Single standard multimedia IF-PLL and FM radio demodulator |
| TDA9810 | Multistandard VIF-PLL with QSS-IF and AM demodulator |
| TDA9810T | Multistandard VIF-PLL with QSS-IF and AM demodulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA9808T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single standard VIF-PLL with QSS-IF and FM-PLL demodulator |
| TDA9809 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single standard multimedia IF-PLL and FM radio demodulator |
| TDA9809M | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single standard multimedia IF-PLL and FM radio demodulator |
| TDA9809M/V1,112 | 功能描述:射頻無線雜項(xiàng) MULTIMEDIA IF PLL RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| TDA9809M/V1,118 | 功能描述:射頻無線雜項(xiàng) MULTIMEDIA IF PLL RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
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