1. Products
  2. RF and Microwave
  3. RF Power Detectors
  4. Logarithmic RMS Detectors
  5. LTC5587


Features and Benefits

  • Frequency Range: 10MHz to 6GHz
  • Accurate Power Measurement of High Crest Factor (Up to 12dB) Waveforms
  • 40dB Log Linear Dynamic Range
  • Exceptional Accuracy Over Temperature
  • Single-Ended RF Input
  • 0.014dB/Bit (12-Bit) ADC Resolution (VREF = 1.8V)
  • ADC Sample Rate Up to 500ksps
  • Compatible with 1V to 3.6V Digital Logic
  • Fast Response Time: 1μs Rise, 8μs Fall
  • Low Power: 3mA at 3.3V and 500ksps
  • Small 3mm × 3mm 12-pin DFN Package

Product Details

The LTC5587 is a 10MHz to 6GHz, low power monolithic precision RMS power detector with an integrated 12-bit serial analog-to-digital converter (ADC). The RMS detector uses a proprietary technique to accurately measure the RF power of modulated signals with crest-factor as high as 12dB. For an input frequency of 2.14GHz the detection range is from –34dBm to 6dBm. The serial digital output of the detector is a 12-bit word value that is directly proportional to the RF signal power measured in dBm. The LTC5587 is suitable for precision power measurement for a wide variety of RF standards, including LTE, WiMAX, W-CDMA, TD-SCDMA, CDMA, CDMA2000, EDGE, GSM, etc. The DC output of the detector is connected in series with an on-chip 300Ω resistor to the analog output pin (VOUT). This enables further filtering of the output modulation ripple using an off-chip capacitor before analog-to-digital conversion. The ADC features include no data latency, no missing codes, and a sampling rate of up to 500ksps. A dedicated external reference pin (VREF) can be tied to VDD or other suitable low-impedance voltage reference to set the ADC full-scale input voltage range. The ADC also features an automatic power down after each conversion making the LTC5587 ideal for low-power applications.


  • Pico-Cells, Femto-Cells RF Power Control
  • Wireless Repeaters
  • CATV/DVB Transmitters
  • MIMO Wireless Access Points
  • Portable RMS Power Measurement
  • Antenna Monitor

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Tools & Simulations


Product Recommendations

LTC5587 Companion Parts

Recommended Related Parts

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
LTC5587IDD#PBF Material Declaration Reliability Data 12-Lead DFN (3mm x 3mm w/ EP)
LTC5587IDD#TRPBF Material Declaration Reliability Data 12-Lead DFN (3mm x 3mm w/ EP)
Wafer Fabrication Data R409 Reliability Data

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

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.