德州儀器基于SN761633的FM收音機(jī)解決方案
TI 公司的SN761633 是單片F(xiàn)M立體聲收音機(jī)接收器和發(fā)送器,頻率范圍從76 MHz 到108 MHz,廣泛用于手提媒體播放器 (PMP),MP3 播放器和個(gè)人導(dǎo)航設(shè)備。
本文介紹了SN761633的主要性能,功能方框圖以及應(yīng)用電路圖。
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
應(yīng)用:
·手提媒體播放器
·MP3 播放器
·個(gè)人導(dǎo)航設(shè)備
圖1SN761633方框圖
圖2 SN761633應(yīng)用電路圖