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參數(shù)資料
| 型號： | LA7566 |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP24 |
| 封裝： | SDIP-24 |
| 文件頁數(shù)： | 11/11頁 |
| 文件大?。?/td> | 233K |
| 代理商： | LA7566 |
No. 5764-9/11
LA7566
Continued from preceding page.
Pin No.
Symbol
Pin function
Equivalent circuit
18
COMP OUT
Output for the video signal that includes the SIF carrier.
A resistor must be inserted between pin 18 and ground to
acquire an adequate drive capability.
R
≥ 470
19
1st SIF OUT
First SIF output
The signal output from this pin is passed through a bandpass
filter and input to the SIF circuit. This is an emitter-follower
output.
20
FM FILTER
The FM detector signal-to-noise ratio can be improved by
inserting a filter in the FM detector bias line.
C1 should have a value of 0.47 F or greater, and 1 F is
recommended .
If the FM detector is not used, pin 20 must be connected to
ground through a 2-k
resistor. This stops the FM detector
VCO circuit.
21
22
23
24
SIF IN (4.5 MHz)
SIF IN (5.5 MHz)
SIF IN (6.0 MHz)
SIF IN (6.5 MHz)
RF AGC VR
SIF inputs.
Four input pins are provided to support multi-side systems, and
a switching function is also included. Since buzzing and bass
beating can occur if interference signals, such as the video
signal or the chrominance signal, enter these pins, extra care
must be taken in designing the input circuit pattern layout. Note
that pin 24 also functions as the RF AGC adjustment pin. This
pin sets the tuner RF AGC operating point. Also, the FM output
and the video output can be muted at the same time by setting
this pin to the ground level.
Switch
5.5 MHz
6.0 MHz
6.5 MHz
4.5 MHz
A
B
C
H
q
H
L
q
H
L
H
q
H
L
q
L
H
q
L
q
L
H
L
q
L
H
q
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA75675M-S | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75675M-S | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75676M | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75676M | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75676NVA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA75665M | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA75665NM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA75665NV | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA75675M-S | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:VIF/SIF IF Signal-Processing Circuit that Supports NTSC Intercarrier for TV and VCR Products |
| LA75676M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For TV and VCR Products IF Signal Processor (VIF+SIF) |
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