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參數(shù)資料
| 型號(hào)： | TDA9814T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | Multistandard VIF-PLL with QSS-IF and dual FM-PLL/AM demodulator(帶QSS-IF和雙路FM-PLL/AM解調(diào)器的多標(biāo)準(zhǔn)VIF-PLL) |
| 中文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO28 |
| 封裝： | 7.50 MM, PLASTIC, MS-013AE, SOT-136-1, SOP-28 |
| 文件頁數(shù)： | 18/36頁 |
| 文件大小： | 249K |
| 代理商： | TDA9814T |
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1998 Feb 09
18
Philips Semiconductors
Product specification
Multistandard VIF-PLL with QSS-IF
and dual FM-PLL/AM demodulator
TDA9814T
16. 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/SIF input signal is not permitted. Pins 6 and 25
have to be connected to positive supply voltage for minimum IF gain. S/N and THD measurements are taken at 50
μ
s
de-emphasis. The not tested FM-PLL has to be locked to an unmodulated carrier.
a) Second IF input level 10 mV RMS.
17. Measured with an FM deviation of 27 kHz the typical AF output signal is 500 mV RMS (R
x
= R
y
= 0
; see Fig.13).
By using R
x
= R
y
= 470
the AF output signal is attenuated by 6 dB (250 mV RMS) and adapted to the stereo
decoder family TDA9840. For handling an FM deviation of more than 53 kHz the AF output signal has to be reduced
by using R
x
and R
y
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
= R
y
= 470
.
18. The leakage current of the decoupling capacitor (2.2
μ
F) should not exceed 1
μ
A.
19. In the event of activated auto mute state the second FM-PLL oscillator is switched off, if the input signal at pin 14 is
missing or too weak (see Fig.13). In the event of switching the second FM-PLL oscillator on by the auto mute stage
an increased DC jump is the consequence. Note, that noise at pin 14 disables the mute state (at low SIF input signal),
but this will not lead to false identification of the used stereo decoder family TDA9840.
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) 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).
21. 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).
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.
23. Measurements taken with SAW filter L9453 (Siemens) for AM sound IF (suppressed picture carrier).
24. The input voltage has to be V
i
> 2.8 V or open-circuit.
Table 1
Input frequencies and carrier ratios
Table 2
Switch logic
DESCRIPTION
SYMBOL B/G STANDARD
L STANDARD
L ACCENT
STANDARD
UNIT
Picture carrier
Sound carrier
f
PC
f
SC1
f
SC2
SC
1
SC
2
38.9
33.4
33.158
13
20
38.9
32.4
10
33.9
40.4
10
MHz
MHz
MHz
dB
dB
Picture-to-sound carrier ratio
STANDARD SWITCH (PIN 7)
SELECTED STANDARD
VIDEO
POLARITY
FM-PLL
AF-AMPLIFIER
1
2
1
2
2.8 V to V
P
1.3 to 2.3 V
0 to 0.8 V
B/G
B/G, with external VIF-AGC
L
negative
negative
positive
on
on
off
on
on
off
FM
FM
AM
FM
FM
mute
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA9815 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard/MAC VIF-PLL with QSS-IF and dual FM-PLL/AM demodulator |
| TDA9816M | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard multimedia IF-PLL and FM radio demodulator |
| TDA9817 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single/multistandard VIF/SIF-PLL and FM-PLL/AM demodulators |
| TDA9817T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single/multistandard VIF/SIF-PLL and FM-PLL/AM demodulators |
| TDA9817TS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single/multistandard VIF/SIF-PLL and FM-PLL/AM demodulators |
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