ADL5902

Data Sheet FEATURES Accurate rms-to-dc conversion from 50 MHz to 9 GHz Single-ended input dynamic range of 65 dB No balun or external input matching required Waveform and modulation independent, such as GSM/CDMA/W-CDMA/TD-SCDMA/WiMAX/LTE Linear-in-decibels output, scaled 53 mV/dB Transfer function ripple: <±0.1 dB Temperature stability: <±0.3 dB All functions temperature and supply stable Operates from 4.5 V to 5.5 V from −40°C to +125°C Power-down capability to 1.5 mW Pin-compatible with the 50 dB dynamic range AD8363 APPLICATIONS Power amplifier linearization/control loops Transmitter power controls Transmitter signal strength indication (TSSI) RF instrumentation GENERAL DESCRIPTION The ADL5902 is a true rms responding power detector that has a 65 dB measurement range when driven with a single-ended 50 Ω source. This feature makes the ADL5902 frequency versatile by eliminating the need for a balun or any other form of external input tuning for operation up to 9 GHz. The ADL5902 provides a solution in a variety of high frequency systems requiring an accurate measurement of signal power. Requiring only a single supply of 5 V and a few capacitors, it is easy to use and capable of being driven single-ended or with a balun for differential input drive. The ADL5902 can operate from 50 MHz to 9 GHz and can accept inputs from −62 dBm to at least +3 dBm with large crest factors, such as GSM, CDMA, W-CDMA, TD-SCDMA, WiMAX, and LTE modulated signals. The ADL5902 can determine the true...