Analog Devices Inc. ADL5511 RF RMS 检波器

Analog Devices ADL5511 RF RMS 检波器是一款RF包络和TruPwr™ 均方根检波器。包络输出电压是一个与输入信号包络成正比的电压。均方根输出电压与输入信号的峰均比无关。均方根输出为线性V/V电压，900MHz时的转换增益为1.9V/V均方根值。包络输出的转换增益为1.46V/V (900 MHz)，它以ERER引脚提供的1.1V内部基准电压为参考。ADL5511可采用直流至6GHz信号工作，包络带宽最高可达130MHz。所获取的包络可用于RF功率放大器(PA)线性化和增强效率，均方根输出则可用于测量均方根功率。高均方根值精度和快速包络响应特别适合于对CDMA2000、W-CDMA及LTE系统中使用的宽带高峰均比信号进行包络检波和功率测量。

The ADL5511 can operate from dc to 6GHz on signals with envelope bandwidths up to 130MHz. The extracted envelope can be used for RF power amplifier (PA) linearization and efficiency enhancements and the rms output can be used for rms power measurement. The high rms accuracy and fast envelope response are particularly useful for envelope detection and power measurement of broadband, high peak-to-average signals that are used in CDMA2000, W-CDMA, and LTE systems.

特性

Envelope tracking RF detector with output proportional to input voltage
Separate TruPwr rms output
No balun or external tuning required
Excellent temperature stability
Input power dynamic range of 47dB

Input frequency range from dc to 6GHz
130MHz envelope bandwidth
2ns Envelope delay
4.75V to 5.25V Single-supply operation
21.5mA Supply current
130μW Power-down mode

应用

RMS power and envelope detection of W-CDMA, CDMA2000, LTE, and other complex waveforms
Drain modulation based power amplifier linearization
Power amplifier linearization employing envelope-tracking methods