Hittite HMC713LP3E 50MHz-8GHz 功率检测方案

Hittite 公司的HMC713LP3E是对数功率检测器/控制器,工作频率从50 MHz 到8000 MHz,动态范围高达54dB,到2.7GHz和54dB范围的精度为±1 dB,工作电压从+2.7 到 +5.5V,可应用在蜂窝架构, WiMAX, WiBro 和LTE/4G,RSSI,自动增益和功率控制,军用和雷达等.本文介绍了HMC713LP3E主要特性, 功能方框图, 应用和评估PCB电路图以及评估PCB材料清单.

The HMC713LP3E Logarithmic Detector/Controller is ideal for converting the power of RF signals with frequencies in the 50 MHz to 8000 MHz range, to a DC voltage, proportional to input power, at its output. The HMC713LP3E employs a successive compression technology which delivers 54 dB of dynamic range with high measurement accuracy over a wide input frequency range. As the input signal is increased, successive amplifiers move into saturation one by one creating an accurate approximation of the logarithm function. The outputs of a series of detectors are summed, converted into voltage domain and buffered to drive the OUTP output.

For detection mode, the OUTP pin is connected to the VSET input and will provide a nominal logarithmic slope of 17 mV/dB and an intercept of -68 dBm. The HMC713LP3E can also be used in the controller mode where an external voltage is applied to the VSET pin to create an AGC or APC feedback loop.

HMC713LP3E主要特性:

Wide Dynamic Range: up to 54 dB

High Accuracy:

±1 dB with 54 dB Range Up To 2.7 GHz

Fast Output Response Time

Supply Voltage: +2.7 to +5.5V

Power-Down Mode

Excellent Stability over Temperature

16 Lead 3x3 mm SMT Package: 9mm2

HMC713LP3E 典型应用:

• Cellular Infrastructure

• WiMAX, WiBro & LTE/4G

• Power Monitoring & Control Circuitry

• Receiver Signal Strength Indication (RSSI)

• Cellular Infrastructure

• Automatic Gain & Power Control

• Military, ECM & Radar

图1.HMC713LP3E功能方框图

图2.HMC713LP3E应用和评估PCB电路图

图3.HMC713LP3E评估PCB布局图
评估PCB材料清单(B)M):