Features and Benefits

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

Product Details

The ADL5511 is an RF envelope and TruPwr™ rms detector. The envelope output voltage is presented as a voltage that is proportional to the envelope of the input signal. The rms output voltage is independent of the peak-to-average ratio of the input signal.

The rms output is a linear-in-V/V voltage with a conversion gain of 1.9 V/V rms at 900 MHz. The envelope output has a conversion gain of 1.46 V/V at 900 MHz and is referenced to an internal 1.1 V reference voltage, which is available on the EREF pin.

The ADL5511 can operate from dc to 6 GHz on signals with envelope bandwidths up to 130 MHz.

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.

The ADL5511 operates from −40°C to +85°C and is available in a 16-lead, 3 mm × 3 mm LFCSP package.


  • 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

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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ADL5511 Discussions

RE: ADL5511 and other IC's that do envelope detection
17 week(s) ago in RF and Microwave
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.