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LA1776M 数据表(PDF) 8 Page - Sanyo Semicon Device

部件名 LA1776M
功能描述  Single-Chip Tuner IC for Car Radios
Download  41 Pages
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制造商  SANYO [Sanyo Semicon Device]
网页  https://www.sanyo-av.com/us/
标志 SANYO - Sanyo Semicon Device

LA1776M 数据表(HTML) 8 Page - Sanyo Semicon Device

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An antenna damping current flows when the RF
AGC voltage (pin 1) reaches VCC – VD.
FM antenna damping
drive pin
No.8085-8/41
LA1776M
Continued on next page.
Pin Descriptions
1
ANT
1000 pF
1000 pF
100
500
VCC
62 pin
RF
AGC
1
2
2
N
AGC
DET
W
AGC
DET
KEYED
AGC
ANT
DAMPING
VCC (61pin)
VCC-VD
12 k
FET
2ND GATE
+
Used to control the FET second gate voltage.
In AM mode, forcibly set the pin 2 voltage to the low
level and apply AGC to the FM RF system.
RF AGC
3
Oscillator connection
This pin is designed to drive an external oscillator
circuit that uses external transistors and capacitors.
FM OSC
4
VCC
VCC (5 pin)
25 pF
20 pF
2 k
10 k
VT
4
EF. GND
Pin No.
Pin
Description
Equivalent circuit


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