參數(shù)資料
型號: LA1780M
元件分類: 調(diào)諧器
英文描述: 2-BAND, AUDIO TUNER, PQFP64
封裝: QFP-64
文件頁數(shù): 36/38頁
文件大?。?/td> 764K
代理商: LA1780M
Pin No.
Function
Description
Equivalent circuit
3
F.E.GND
Pin Descriptions
No. 5724-7/38
LA1780M
62 pin
An antenna damping current flows
1
Antenna damping drive
when the RF AGC voltage (pin 2)
reaches VCC-VD.
2
RF AGC
Used to control the FET
second gate.
Oscillator connection
4
OSC
The transistor and capacitors
required for the oscillator circuit
are integrated on the chip.
AM first oscillator
7
AM OSC
This circuit can oscillator up to the
SW band.
An ALC circuit is included.
Continued on next page.
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