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參數(shù)資料
| 型號： | LA7567BVA |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| 封裝： | 0.225 INCH, SSOP-24 |
| 文件頁數(shù)： | 7/20頁 |
| 文件大小： | 184K |
| 代理商： | LA7567BVA |
Pin No.
Pin
Description
Equivalent circuit
1
SIF INPUT
The FM detector signal-to-noise ratio can be
improved by inserting an FM detector bias line
filter.
If the FM detector with C1 (0.47F or larger: the
recommended value is 1F) is not used, pin 2
must be connected to ground through a 2k
resistor. This stops the FM detector VCO circuit.
1
1k
1k
ILA06800
2
ILA06801
C1
TO VCO BIAS
4.2V
24k
4k
14k
3
4
ILA06802
ILA06819
200
68k
500kHz
400
4(R)
Pin Descriptions
The input impedance is about 1k
. If interference*
enters at this pin, it can cause buzzing and beating.
The PCB pattern layout must be designed to
minimize interface at this pin.
*: Signals that can cause interface with the audio
include video signals and the chroma signal.
Signal such as the VIF carrier can also cause
interference.
No.7939-15/20
LA7567BVA
Continued on next page.
2
FM power supply filter
3
4
SIF converter
Pin 3 is the SIF converter output.
This signal is passed through a 6MHz bandpass
filter and input to the SIF block. This is an emitter-
follower output with a 200
series resister inserted
in the output.
Pin 4 is the SIF converter's 500kHz oscillator
connection.
Since this oscillator circuit includes an ALC, the
oscillator level is low and is controlled to be a fixed
level. If this circuit is not used, insert a 10k
resistor between pin 3 and ground. Connecting this
external resistor stops the 500kHz oscillator and
allows the converter to be used as an amplifier.
5
VCC
The decoupling capacitor between VCC and
ground must be connected with the shortest
lines possible.
相關PDF資料 |
PDF描述 |
|---|---|
| LA7567BVA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA7567EV-A | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA7567EV-A | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA7567EV | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA7567EV | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LA7567EV | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:TV and VCR VIF/SIF IF Signal-Processing Circuit with PAL/NTSC Multi-Format Audio Support |
| LA7567GM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:TV and VCR VIF/SIF IF Signal-Processing Circuit with NTSC SPLIT Support |
| LA7567N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:TV and VCR VIF/SIF IF Signal-Processing Circuit with PAL/NTSC Multi-Format Audio Support |
| LA7567NM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:TV and VCR VIF/SIF IF Signal-Processing Circuit with PAL/NTSC Multi-Format Audio Support |
| LA75691 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:IF Signal-Processing IC for PAL/NTSC Multichannel Audio TV and VCR Systems |
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