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参数资料
| 型号： | LA7567B |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP24 |
| 封装： | DIP-24 |
| 文件页数： | 5/15页 |
| 文件大小： | 204K |
| 代理商： | LA7567B |
No. 6099-13/15
LA7567B, 7567BM
Continued from preceding page.
Pin No.
Pin
Description
Equivalent circuit
21
RF AGC VR
RF AGC VR connection.
This pin sets the tuner RF AGC operating point. Also, the
FM output and the video output can both be muted at the
same time by connecting this pin to ground.
20 k
20 k
560
A12043
21
4.2 V
22
NICAM output
First SIF output.
Internally, this is an emitter-follower output with a 600-
resistor attached. When used in an intercarrier system, the
buzz characteristics can be improved by forming a
chrominance carrier trap with this pin.
Forms a chrominance killer trap.
22
20 k
20 k
6 k
620
23
FM filter
Connection for a filter used to hold the FM detector output
DC voltage fixed. Normally, a 1-F electrolytic capacitor
should be used. The capacitance should be increased if
the low band (around 50 Hz) frequency characteristics
need to be improved.
The FM detector output level can be reduced and the FM
dynamic range can be increased by inserting a resistor and
a capacitor in series between pin 23 and ground.
1 k
1 k
A12045
23
C
+
R
24
FM Detector output
Audio FM detector output. A 300-
resister is inserted in
series with an emitter-follower output.
For applications that support stereo:
Applications that input this signal to a stereo decoder may
find that the input impedance is reduced, the left and right
signals are distorted, and that the stereo characteristics are
degraded. If this problem occurs, add a resistor between
pin 24 and ground.
R1
≥ 5.1 k
For applications that support mono:
Create an external deemphasis circuit.
t = C
× R2
R2
300
10 k
C
R1
A12046
24
22
A12044
相关PDF资料 |
PDF描述 |
|---|---|
| LA7567BVA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LA7567BM | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:LA7567B, LA7567BM |
| LA7567EV | 制造商:SANYO 制造商全称: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 制造商全称: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 制造商全称: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 制造商全称:Sanyo Semicon Device 功能描述:TV and VCR VIF/SIF IF Signal-Processing Circuit with PAL/NTSC Multi-Format Audio Support |
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