text.skipToContent text.skipToNavigation


50 MHz to 4 GHz 40 dB Logarithmic Power Detector for CDMA and WCDMA


Package | PIN: YFQ | 6
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $2.92
10-24 $2.63
25-99 $2.45
100-249 $2.15
250-499 $2.01
500-749 $1.71
750-999 $1.44
1000+ $1.38


  • Supply Voltage: 2.7 V to 3.3 V
  • Output Voltage: 0.3 V to 2 V
  • 40-dB Linear in dB Power Detection Range
  • Shutdown
  • Multi-Band Operation from 50 MHz to 4 GHz
  • 0.5-dB Accurate Temperature Compensation
  • External Configurable Output Filter Bandwidth
  • 0.4-mm Pitch DSBGA Package

Texas Instruments  LMH2100TM/NOPB

The LMH2100 is a 40-dB RF power detector intended for use in CDMA and WCDMA applications. The device has an RF frequency range from 50 MHz to
4 GHz. It provides an accurate temperature and supply compensated output voltage that relates linearly to the RF input power in dBm. The circuit operates with a single supply from 2.7 V to 3.3 V.

The LMH2100 has an RF power detection range from −45 dBm to −5 dBm, and is ideally suited for direct use in combination with a 30-dB directional coupler. Additional low-pass filtering of the output signal can be realized by means of an external resistor and capacitor. shows a detector with an additional output low pass filter. The filter frequency is set with RS and CS.

shows a detector with an additional feedback low pass filter. Resistor RP is optional and will lower the Trans impedance gain (RTRANS). The filter frequency is set with CP//CTRANS and RP//RTRANS.

The device is active for Enable = High; otherwise it is in a low power-consumption shutdown mode. To save power and prevent discharge of an external filter capacitance, the output (OUT) is high-impedance during shutdown.

For all available packages, see the orderable addendum at the end of the data sheet.