參數(shù)資料
型號(hào): LA1780
廠商: Sanyo Electric Co.,Ltd.
英文描述: Single-Chip Tuner IC for Car Radios
中文描述: 單芯片調(diào)諧器IC的汽車(chē)收音機(jī)
文件頁(yè)數(shù): 16/38頁(yè)
文件大?。?/td> 764K
代理商: LA1780
No. 5724-16/38
LA1780M
Pin No.
Function
Description
Equivalent circuit
45
IF output
The IF amplifier load
Pin 40 V
CC
Pin 40 V
CC
Continued from preceding page.
Continued on next page.
Q1: Used for time constant
switching during seeks.
τ
= 2.2 μF
×
300 k
Seek
τ
= 2.2 μ
×
10
The external capacitors are
connected to V
CC
.
This is because the IF amplifier
operates referenced to V
CC
.
44
IF AGC
AM antenna damping
drive output
Wide band AGC input
I
46 = 6 mA (maximum)
This is the antenna damping
current.
46
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