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CD1691CB Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers

Part # CD1691CB
Description  Monolithic FM AM Radio-IC
PDF  6 Pages
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Manufacturer  ETC2 [List of Unclassifed Manufacturers]
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CD1691CB Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers

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华晶双极电路
CD1691CB
单片调频调幅收音机电路
1  概述与特点 
CD1691CB 是一块集成度高
外围元件少的单片 FM / AM 收音机集成电路 其特点如下
 静态电流小 V
CC = 3V 时
FM
ICCQ = 5.3 mA AM ICCQ =3.4 mA 典型值
 带有 FM/AM 选择开关
 输出功率大 V
CC = 6V
RL= 8 时 PO= 450 mW 典型值
 内置 AFC 可变电容
 内含 RF AGC IF AGC
 调谐 LED 驱动
 电子音量控制 FM 静音
 封装形式 SOP28
2  功能框图与引脚说明 
2.1 功能框图 
 
2.2 引脚说明 
引脚
符 号
功 能
引脚
符 号
功 能
1
MUTE
静音
8
OUTREG
基准源输出
2
DISCFM
FM 移相
9
RFFM
FM RF 调谐
3
NF
反馈
10
INAMR
AM 射频输入
4
CONVOL
音量控制
11
NC
空脚
5
OSCAM
调幅本振
12
INFMR
FM 射频输入
6
AFC
自动频率控制
13
GNDFE
高频地
7
OSCFM
调频本振
14
OUTIF
中频输出
                                                                              接下表 
 
 
 
 
 
无锡华晶微电子股份有限公司
地址 江苏省无锡市梁溪路 14 号
电话 0510 - 5807123-5542
传真 0510 - 5803016
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28
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功率放大
调幅中频检波
调幅高放
调频鉴频
调频高放
调谐指示
调频中放


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