AD8361 LF to 2.5 GHz TruPwr™ Detector

Ground reference mode, in which the origin is zero. Internal reference mode, which offsets the output 350 mV above ground. Supply reference mode, which offsets the output to VS/7.5.

The AD8361 is a mean-responding power detector for use in high frequency receiver and transmitter signal chains, up to 2.5 GHz. It is very easy to apply. It requires a single supply only between 2.7 V and 5.5 V, a power supply decoupling capacitor, and an input coupling capacitor in most applications. The output is a linear-responding dc voltage with a conversion gain of 7.5 V/V rms. An external filter capacitor can be added to increase the averaging time constant.

The AD8361 is intended for true power measurement of simple and complex waveforms. The device is particularly useful for measuring high crest-factor (high peak-to-rms ratio) signals, such as CDMA and W-CDMA. The AD8361 has three operating modes to accommodate a variety of analog-to-digital converter requirements:

The AD8361 is specified for operation from −40°C to +85°C and is available in 8-lead MSOP and 6-lead SOT-23 packages. It is fabricated on a proprietary high fT silicon bipolar process.

Features and Benefits
  • Calibrated rms response
  • Excellent temperature stability
  • Up to 30 dB input range at 2.5 GHz
  • 700 mV rms, 10 dBm, re 50 Ω maximum input
  • ±0.25 dB linear response up to 2.5 GHz
  • Single-supply operation: 2.7 V to 5.5 V
  • Low power: 3.3 mW at 3 V supply
  • Rapid power-down to less than 1 µA
    • RF & Microwave
    Data Sheets
    Documentnote
    AD8361: LF to 2.5 GHz TruPwr™ Detector Data Sheet (Rev. F)PDF 481.82 K
    Application Notes
    Documentnote
    AN-1040: RF Power Calibration Improves Performance of Wireless Transmitters (Rev. 0)PDF 152 kB
    AN-653: Improving Temperature, Stability, and Linearity of High Dynamic Range RMS RF Power Detectors (Rev. A)PDF 415 kB
    AN-691: Operation of RF Detector Products at Low Frequency (Rev. 0)PDF 778 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD8361ARM Production8 ld MSOPOTH 50-40 to 85C4.624.39N
    AD8361ARM-REEL7 Production8 ld MSOPREEL 1000-40 to 85C04.39N
    AD8361ARMZ Production8 ld MSOPOTH 50-40 to 85C43.8Y
    AD8361ARMZ-REEL Production8 ld MSOPREEL 3000-40 to 85C03.8Y
    AD8361ARMZ-REEL7 Production8 ld MSOPREEL 1000-40 to 85C03.8Y
    AD8361ARTZ-RL7 Production6 ld SOT-23REEL 3000-40 to 85C03.8Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    AD8361ART-EVALEvaluation Board101.2N
    AD8361-EVALZEvaluation Board100.19Y
    Reference Materials
    AD8361: LF to 2.5 GHz TruPwr™ Detector Data Sheet (Rev. F) ad8361
    AN-1040: RF Power Calibration Improves Performance of Wireless Transmitters (Rev. 0) ad8307
    AN-653: Improving Temperature, Stability, and Linearity of High Dynamic Range RMS RF Power Detectors (Rev. A) ad8314
    AN-653: 改善高动态范围均方根射频功率检波器的温度稳定性和线性度 (Rev. A) ad8314
    AN-691: RF检波器的低频工作特性 (Rev. 0) ad8307
    AN-1040: RF功率校准提高无线发射机的性能 (Rev. 0) ad8307
    AN-691: Operation of RF Detector Products at Low Frequency (Rev. 0) ad8307
    Design and Operation of Automatic Gain Control Loops for Receivers in Modern... ad8369
    RF Source Booklet adf9010
    Measurement and Control of RF Power, Part I ad640
    Measurement and Control of RF Power, Part II ad640
    Measurement and Control of RF Power, Part III ad640
    Log Amps and Directional Couplers Enable VSWR Detection ad640
    Measuring VSWR and Gain in Wireless Systems ad640
    Measuring the RF Power in CDMA2000 and W-CDMA High Power Amplifiers (HPAs) ad640
    Design a Logamp RF Pulse Detector ad640
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