FM收音机电路

D7021内包含有高放、混频、本振、二级有源中频滤波器、中频限幅放大器、鉴频器、低频器、低频放大器、静噪电路以及相关静噪系统等，它具有单声道FM收音机的全部功能。工作电源电压范围为1.8~6V，推荐值为3V。它适用单声道或立体声FM收音机，尤其适用于低压微调谐系统。\n 该电路采用DIP16的封装形式封装。 ·由于中频频率很低，只有76kHz，因此中频滤波由内电路两级有源滤波器来实现，在外电路取消了中周变压器或陶瓷滤波器，减化了电路调整，缩小了体积\n·输入回路不需要调谐，采用宽频带接收，通过改变本振调谐频率来选择电台信号。高频输入信号频率范围为1.5 ~110MHz\n·电路内设有由混频、限幅中放、鉴频、本振（VCO）组成的频率锁相环电路，用来对中频频偏进行压缩，以满足广播信号的频带宽度\n·电路内设有由相关静噪;

Silicore

芯谷科技

Function of this IC is accurately resetting the system

文件：175.46 Kbytes 页数：2 Pages

ESTEK

伊泰克电子

High Performance Narrowband ISM Transceiver IC

GENERAL DESCRIPTION The ADF7021 is a high performance, low power, highly integrated 2FSK/3FSK/4FSK transceiver. It is designed to operate in the narrow-band, license-free ISM bands, and in the licensed bands with frequency ranges of 80 MHz to 650 MHz and 862 MHz to 950 MHz. The part has both Gaus

文件：471.04 Kbytes 页数：44 Pages

AD

亚德诺

High Performance Narrow-Band Transceiver IC

GENERAL DESCRIPTION The ADF7021 is a high performance, low power, highly integrated 2FSK/3FSK/4FSK transceiver. It is designed to operate in the narrow-band, license-free ISM bands, and in the licensed bands with frequency ranges of 80 MHz to 650 MHz and 862 MHz to 950 MHz. The part has both Gaus

文件：1.25097 Mbytes 页数：64 Pages

AD

亚德诺