參數(shù)資料
型號: AN7280S
廠商: PANASONIC CORP
元件分類: 調(diào)諧器
英文描述: FM Front-end IC for Car Radio
中文描述: AUDIO TUNER, PDSO20
封裝: 0.300 INCH, PLASTIC, SOP-20
文件頁數(shù): 5/7頁
文件大?。?/td> 81K
代理商: AN7280S
ICs for FM/AM Tuner
AN7280S
I
Pin Descriptions
Equivalent Circuit
Pin Name
Pin No.
Description
1
OSC Emitter
Local oscillation transistor emitter pin
2
OSC Base
Local oscillation transistor base pin
3
OSC By-pass
4
OSC Buffer Output
Pin for output OSC signal to pre-scaler
5
Level Detection Output
6
AGC– Amp. Gain Adjustment
7
Control Signal Input
8
GND
9
SSC Input
10
V
CC
AGC signal output pin for RF-Amp.
secondary gate
Pin for adjusting AGC Amp. gain by
external resistance
Pin for adjusting AGC-Amp. gain through
input of control signal from IF section
Pin for adjusting AGC-Amp. gain through
input of control signal from microcomputer
V
ref
by-pass pin for mixer,OSC buffer,OSC
section
2
1
V
ref
4
V
ref
750
5
V
CC
.70
μ
A
6
5.6k
7
1.5k
1.5V
V
ref
9
70k
39k
+
3
5V
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