ADL5506:  30 MHz to 4.5 GHz, 45 dB RF Detector

Product Details

Product Status:Recommended for New Designs

The ADL5506 is a complete, low cost subsystem for the measurement of RF signals in the 30 MHz to 4.5 GHz frequency range, with a typical dynamic range of 45 dB, intended for use in a wide variety of wireless terminal devices. It provides a wider dynamic range and better accuracy than is possible using discrete diode detectors. In particular, its temperature stability is excellent over −40°C to +85°C.

Its high sensitivity allows measurement of low power levels, thus reducing the amount of power that needs to be coupled to the detector. It is essentially a voltage responding device, with a typical dynamic range of 45 dB.

For convenience, the signal is internally ac-coupled, using a 5 pF capacitor and a broadband 50 Ω match, with an external shunt resistor of 52 Ω. This high-pass coupling, with a corner at approximately 19 MHz, determines the lowest operating frequency. Therefore, the source can be dc grounded.

The ADL5506 output increases from approximately 0.14 V to a little over 1 V as the input signal level increases from 1.25 mV rms (−45 dBm) to 224 mV rms (0 dBm). The output is proportional to the logarithm of the input power level; that is, the reading is presented directly in decibels and is scaled about 18 mV/dB at 900 MHz. A capacitor can be connected between the VLOG pin and the CFLT pin when it is desirable to increase the time interval over which averaging of the input waveform occurs.

The ADL5506 is available in a 6-ball WLCSP and consumes 3.8 mA from a 3.0 V supply. When powered down, the typical disable supply current is <1 µA.


  • RSSI and TSSI for wireless terminal devices
  • RF transmitter or receiver power measurement


  • Complete RF detector function
  • Typical dynamic range: 45 dB
  • Frequency range from 30 MHz to 4.5 GHz
  • Excellent temperature stability
  • Stable linear in decibel response
  • Power on/off response time:
    65 ns/145 ns (rise/fall)
    −5 dBm input power applied
  • Operates from −40°C to +85°C
  • Low power: 3.8 mA at 3.0 V
    Power supply voltage range from 2.5 V to 5.5 V
  • Disable current <1 µA

Functional Block Diagram for ADL5506


Title Content Type File Type
ADL5506: 30 MHz to 4.5 GHz, 45 dB RF Detector initial rev 0 (Rev 0, 11/2013) (pdf, 1118 kB) Data Sheets PDF
Analog Devices Unveils Wide Dynamic Range, Highly Accurate RF Power Detectors (16 Dec 2013) Press Releases HTML
RF Source Booklet  (PDF, 4353 kB)
RF IC Product Overview - Version P (02/2014)
Overview PDF
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADI’s ADIsimRF design tool provides calculations for the most important parameters within the RF signal chain, including cascaded gain, noise figure, IP3, P1dB, and total power consumption.
ADIsim Design/Simulation Tools HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products

Recommended RF Detectors/Controllers for the ADL5506 Recommended Logarithmic Amplifiers for the ADL5506
  • For high sensitivity and high dynamic range applications, we recommend the AD8306, AD8309 or the AD8310.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADL5506 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
ADL5506-EVALZ Status: Production Evaluation Board $150.00 Yes -

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.

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