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  2. RF and Microwave
  3. RF Power Detectors
  4. Logarithmic Detectors
  5. ADL5506


Features and Benefits

  • 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
  • AEC-Q100 qualified for automotive applications

Product Details

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
  • Automotive RF bidirectional amplifiers

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.

Evaluation Kits (1)

Tools & Simulations


Product Recommendations

ADL5506 Companion Parts

Recommended Controllers for the ADL5506

Recommended Log Amps for the ADL5506

Design Resources

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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
ADL5506ACBZ-R7 Material Declaration Reliability Data 6-Ball WLCSP (1.36mm x 0.76mm)
ADL5506WACBZ-R7 Material Declaration Reliability Data 6-Ball WLCSP (1.36mm x 0.76mm)
Wafer Fabrication Data

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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.