參數(shù)資料
型號(hào): LA7567GM
元件分類: 接收器
英文描述: AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24
封裝: MFP-24
文件頁(yè)數(shù): 4/14頁(yè)
文件大?。?/td> 185K
代理商: LA7567GM
No. 6803-12/14
LA7567GM
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.
20k
20k
560
A13694
21
4.2V
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.
22
20k
20k
6k
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.
1k
1k
A13696
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
3.3k
C
R1
A13697
24
22
A13695
Forms a chrominance killer trap.
相關(guān)PDF資料
PDF描述
LA7567GVA AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24
LA7567GVA AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24
LA7567NM AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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)
LA75695VA 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+SIF converter)