中国电子技术网

设为首页 网站地图 加入收藏

 
 

CML CMX994 100-600MHz直接变换接收解决方案

关键词:通信技术 无线通信 软件定义无线电(SDR) 卫星通信

时间:2012-01-16 10:21:36       作者:CML       来源:CMX994

CML 公司的CMX994是 100-600MHz直接变换接收器,集成了高动态范围I/Q解调器控制增益的宽带LNA,接收器基带部分包括放大器和精密的基带滤波器,整数N PLL和VCO负阻放大器产生本地振荡(LO),工作电压3.3V,主要用在模拟/数字多模式无线电,SDR,数据遥测调制解调器,卫星通信,笛卡尔反馈回路发送器,宽带数据等。本文介绍了CMX994主要特性,方框图,典型应用框图和EV9942评估板主要特性与功能,电路图以及PCB布局图。

The CMX994 is a direct conversion receiver IC. It includes a broadband LNA with gain control followed by a high dynamic range I/Q demodulator. The receiver baseband section includes amplifiers and precise baseband filter stages. LO generation is provided by an integer-N PLL and a VCO negative resistance amplifier; an external LO may also be used. LO dividers are provided for flexible multi-band operation.

The device operates from a single 3.3V supply over a temperature range of –40℃ to +85℃ and is available in a small 40-pin VQFN (Q4) package.

CMX994主要特性:

Rx Direct Conversion Receiver

o Direct conversion eliminates image responses

o LNA with gain control

o 100MHz to 600MHz I/Q demodulator

o Precise filtering with bandwidth setting and 1:2:4 bandwidth modes Local Oscillator

o LO synthesiser

o VCO negative resistance amplifier

o LO divide by 2, 4 or 6 modes

o Tx LO Output
..

查看全文

  • 分享到:

 

猜你喜欢