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德州仪器基于SN761633的FM收音机解决方案

时间:07-02 来源:EDN China 点击:

  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

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