參數(shù)資料
型號(hào)： LA7567EV
元件分類： 接收器
英文描述： AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24
封裝： 0.275 INCH, SSOP-24
文件頁(yè)數(shù)： 7/21頁(yè)
文件大小： 208K
代理商： LA7567EV
No.7779-15/21
LA7567EV
Pin Functions
Pin No.
Pin
Description
Equivalent circuit
1
SIF INPUT
SIF input. The input impedance is about 1k
. Since
buzzing and buzz beating can occur if interference enters
this input pin, care must be taken when design the pattern
layout for this pin. Note that the video and chrominance
signals are especially likely to interfere with the audio
signal. Also, the VIF carrier signal can also cause
interference.
1
1k
1k
ILA06689
2
FM power supply filter
FM detector bias line filter input. Used to improve the FM
detector signal-to-noise ratio.
C1 should be at least 0.47F, and 1F is recommended.
If the FM detector is not used, connect pin 2 to ground
through a 2k
resistor. This stops the FM detector VCO.
2
ILA06690
C1
TO VCO BIAS
4.2V
24k
4k
14k
3
4
SIF converter
Pin 3 is the SIF converter output. The signal is passed
through a 6MHz bandpass filter and input to the SIF circuit.
There is a 200
resistor in series with the emitter-follower
output.
Pin 4 is the SIF converter 500kHz oscillator connection.
Since this oscillator circuit includes an ALC, the oscillator
level is held fixed at a low level. If this circuit is not used,
connect pin 4 to ground through a 10k
external resistor.
Providing this external resistor stops the 500kHz oscillator
and allows the converter to be used as an amplifier.
When this circuit is used with an intercarrier, the buzz
characteristics can be improved by changing the value of
the resistor connected between pin 4and ground to 100k
.
3
ILA06713
200
5
VCC
Use the shortest distance possible when decoupling VCC
and ground.
Continued on next page.
4
ILA06691
68
500kHz
400
4(R)
相關(guān)PDF資料
PDF描述
LA7567EV AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24
LA7567GM AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24
LA7567GM AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24
LA7567GVA AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24
LA7567GVA AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
LA75694M 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Use in TV/VTR Applications IF Signal Processing (VIF/SIF for Hi-Fi)
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