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.| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LMH2100 50-MHz to 4-GHz 40-dB Logarithmic Power Detector for CDMA and WCDMA datasheet (Rev. C) | PDF | HTML | 27 Oct 2015 |
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| Application note | Evaluation Board for the LMH2100 Logarithmic Power Detector (Rev. B) | 30 Apr 2013 |
For additional terms or required resources, click any title below to view the detail page where available.
This evaluation board is designed to aid in the characterization of Texas Instruments LMH2100 Logarithmic Power Detector. This board simplifies the measurement of the DC output voltage that the LMH2100 produces in response to the power level of the RF signal applied to the RF input. Use the (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| DSBGA (YFQ) | 6 | Ultra Librarian |
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