Linear LTC5564超快响应时间15GHz RF功率检测方案
Linear 公司的LTC5564是带比较器的7ns超快响应时间15GHz RF功率检测器,频率范围从600MHz 到15GHz,输入功率电平从-24dBm 到16dBm,75MHz解调带宽,可编程增益设定以改善灵敏度,放大器输出失调电压可调,主要用在802.11a,802.11b,802.11g,802.15和光数据链接,无线数据调制解调器,无线和有线设备的RF信号检测,MMDS和微波链路, 5.8GHz ISM频段无线电以及雷达检测等.本文介绍了LTC5564主要特性, 简化方框图以及600MHz 到15GHz功率检测电路和15GHz演示板电路图.
UltraFast™ 7ns Response Time 15GHz RF Power Detector with Comparator
The LTC5564 is a precision, RF power detector for applications in the 600MHz to 15GHz frequency range. The LTC5564 operates with input power levels from –24dBm to 16dBm. A temperature compensated Schottky diode peak detector, gain-selectable operational amplifier, and fast comparator are combined in a small 16-lead 3mmx3mm QFN package.
The RF input signal is peak detected and then sensed by both a comparator and amplifier. The comparator provides a 9ns response time to input levels exceeding VREF along with a latch enable/disable function. The gain selectable operational amplifier provides a 350V/μs slew rate and 75MHz of demodulation bandwidth to the analog output. VOUTADJ and VREF pins allow for the adjustment of VOUT offset and VCOMP switch point voltages, respectively.
LTC5564主要特性:
..
