CMX138AE1
商品详情
CMX138A::Audio Scrambler and Sub-audio Signalling Processor
The CMX138A is a half-duplex audio scrambler and sub-audio signalling processor for analogue two-way radio applications. This makes it a suitable device for the leisure radio markets (FRS, MURS, PMR446 and GMRS).This device provides a user programmable frequency inversion audio scrambler with compander and pre/de-emphasis - performing simultaneous processing of sub-audio and in-band signalling.Other features include: an auxiliary ADC channel and an auxiliary DAC interface (with optional RAMDAC) to facilitate transmitter power ramping.The device has flexible powersaving modes and is available in a 28-pin (E1) TSSOP package
Features:
Programmable Audio Scrambler
Full Audio-band Processing:
- Pre and De Emphasis
- Compander
- Scrambler
- Selectable 2.55 and
3.0 kHz FiltersAuxiliary ADC and DAC
C-BUS Serial Control/Data Interface to Host μController
Two x Analogue Inputs (Mic. and Discriminator)
Selectable Audio Processing Order
CTCSS and DCS Sub-Audio Signalling
Programmable In-band Tone Encoder and Decoder
Auxiliary System Clock Output
Single-point Modulation Tx Output
Flexible Powersave Modes
Applications:
Leisure Radio Systems:
FRS, MURS, PMR446 and GMRS
Supply Requirement:
3.0 to 3.6 V
CMX138是半双工,音频扰频器和亚音频信号处理器IC。它应用于模拟双向无线中。这种设计使它适用于休闲无线电市场(FRS,MURS,PMR446,GMRS).该设备为有能过户提供了可编程频率倒置音频扰频器,压缩和pre/de-重点-亚音频和带内信号同时发生和处理。其他特点包括一个附加的ADC通道和一个附加的DAC接口(可选的RAMDACDAC来加速提高发射功率。
特点:
可编程音频扰频器 音频和处理同时操作
全音频带处理:-pre/de-重点 -压缩 -扰频 -可选的2.55/3.0khz滤波器
可选的音频处理器命令 亚音频处理:CTCSS DCS
附加的ADC和DAC服务 C-母线序号控制/数据接口到主μC
2x模拟输入(MIC OR DISC) 单点调制Tx 输出
附加系统时钟输出 供电范围:3.0-3.6V
应用:
模拟无线系统(FRS,MURS,PMR446,GMRS)
一:双向无线通讯芯片.CMX808A FX929B FX919B CMX980A CMX639 FX619 FX609
二: 无线数据传输芯片.CMX989 CMX696 CMX909B FX829 CMX589A CMX469A FX429A
三: 有线通讯芯片.CMX869 CMX868 CMX860详细介绍
提供:FX619,FX609,CMX808,CMX838,CMX883,CMX649,CMX469,FX128,CMX138,CMX808,CMX860,CMX909,FX604,CMX624,CMX7042 CML全系列调制解调器。
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