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參數(shù)資料
| 型號(hào)： | TDA9806 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類(lèi)： | 接收器 |
| 英文描述： | Multistandard VIF-PLL and FM-PLL demodulator |
| 中文描述： | FM, VIDEO DISCRIMINATOR, PDIP32 |
| 封裝： | 0.400 INCH, SHRINK, PLASTIC, SOT-232-1, DIP-32 |
| 文件頁(yè)數(shù)： | 16/24頁(yè) |
| 文件大?。?/td> | 193K |
| 代理商： | TDA9806 |
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1995 Sep 05
16
Philips Semiconductors
Preliminary specification
Multistandard VIF-PLL and
FM-PLL demodulator
TDA9806
14. To match the AFC output signal to different tuning systems a current source output is provided. The test circuit is
given in Fig.6. 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 3; C
0
= C
int
+ C
ext
).
16. The intercarrier output signal at pin 20 can be calculated by the following formula taking into account the video output
signal at pin 21 (V
o video(p-p)
= 1 V typical) as a reference:
V
×
=
with
= correction term for RMS value,
= sound-to-picture carrier ratio at VIF input (pins 1 and 2) in dB,
6 dB = correction term of internal circuitry
and
±
3 dB = tolerance of video output and intercarrier output amplitude V
o(rms)
.
Example: SAW filter G1962 (sound shelf: 20 dB)
V
o(rms)
= 32 mV typical.
17. Input level for second IF from an external generator with 50
source impedance. AC-coupled with 10 nF capacitor,
f
mod
= 1 kHz, 27 kHz (54% FM deviation) of audio references. A VIF input signal is not permitted. Pin 28 has to be
connected to positive supply voltage for minimum IF gain. S/N and THD measurements are taken at 50
μ
s
de-emphasis.
a) Second IF input level 10 mV RMS.
18. Measured with an FM deviation of 27 kHz the typical AF output signal is 500 mV (RMS) (R
x
= 0
; see Fig.10).
By using R
x
= 470
the AF output signal is attenuated by 6 dB (250 mV RMS). For handling an FM 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
.
19. The leakage current of the decoupling capacitor (2.2
μ
F) should not exceed 1
μ
A.
20. 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) Picture-to-sound carrier ratio; PC/SC = 13 dB (transmitter).
c) Sound shelf of VIF SAW filter: minimum 20 dB.
21. Measurements taken with SAW filter K6256 (Siemens) for vision and sound IF (sound shelf: 20 dB). Input level
V
i SIF
= 10 mV (RMS), 27 kHz (54% FM deviation).
22. 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.
Table 1
Input frequencies and carrier ratios
DESCRIPTION
SYMBOL
B/G STANDARD
UNIT
Picture carrier
Sound carrier
Picture-to-sound carrier ratio
f
PC
f
SC
SC
38.9
33.4
13
MHz
MHz
dB
V
o rms
)
1 V p
p
–
)
2 2
----1
×
10
V
---------------------------20
(
)
6 dB
3 dB
±
+
2 2
----1
V
V
iPC
----------- dB
)
V
V
iPC
-----------
27 dB
–
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA9808 | Single standard VIF-PLL with QSS-IF and FM-PLL demodulator |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA9808 | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Single standard VIF-PLL with QSS-IF and FM-PLL demodulator |
| TDA9808T | 制造商:PHILIPS 制造商全稱(chēng):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(chēng):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(chēng):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(wú)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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