TI SN761633 FM收音机解决方案

      TI 公司的SN761633 是单片FM立体声收音机接收器和发送器，频率范围从76 MHz 到108 MHz，广泛用于手提媒体播放器 （PMP），MP3 播放器和个人导航设备。

      本文介绍了SN761633的主要性能，功能方框图以及应用电路图。

      The SN761633 is an FM radio receiver and transmitter IC for portable audio players.The circuit consists of a stereo FM radio receiver and FM transmitter, and is available in a small-outline package.

      主要特性：

      ·Single-Chip FM Stereo Radio and Transmitter 
      ·FM Stereo MPX [Receive (Rx), Transmit (Tx)] 
      ·Frequency Range 76 MHz to 108 MHz (Rx, Tx) 
      ·Low Supply Current 
      ·Rx: 11.5 mA (VCC = 3 V, No RF Input) 
      ·Tx: 13 mA (VCC = 3 V, No Audio Input, 
      ·RTX = Open)
      ·32.768-kHz Crystal 
      ·I2C Interface 
      ·MPX Output for RDS (Rx) 
      ·Seek Tuning (Rx) 
      ·RFAGC (Rx) 
      ·RF Auto-Power Control (Tx) 
      ·Pilot Cancel (Rx) 
      ·Sixth-Order 15-kHz LPF (Tx) 
      ·Programmable De/Pre-Emphasis (50/75 µs) 
      ·Pilot Out (Tx) 
      ·General-Purpose External Input (Tx) 
      ·High Power Selectable RF Output (Tx) 
      ·–7/–3/1/4 dBm 
      ·High Cut Control (HCC), Stereo Noise Control (SNC) (Rx) 
      ·Soft Mute (Rx) 
      ·VCC = 2.5 V to 4 V 
      ·40-Pin QFN Package 

      应用： 
      ·手提媒体播放器 
      ·MP3 播放器 
      ·个人导航设备


                                         图1SN761633方框图

                                  图2 SN761633应用电路图

本文来源：TI     作者：

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