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The LMV225/LMV226/LMV228 are 30 dB RF power detectors intended for use in CDMA and WCDMA applications. The device has an RF frequency range from 450 MHz to 2 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 2.7V to 5.5V. The LMV225/LMV226/LMV228 have an integrated filter for low-ripple average power detection of CDMA signals with 30 dB dynamic range. Additional filtering can be applied using a single external capacitor.
The LMV225 has an RF power detection range from –30 dBm to 0 dBm and is ideally suited for direct use in combination with resistive taps. The LMV226/LMV228 have a detection range from –15 dBm to 15 dBm and are intended for use in combination with a directional coupler. The LMV226 is equipped with a buffered output which makes it suitable for GSM, EDGE, GPRS and TDMA applications.
The device is active for Enable = HI, otherwise it is in a low power consumption shutdown mode. During shutdown the output will be LOW. The output voltage ranges from 0.2V to 2V and can be scaled down to meet ADC input range requirements.
The LMV225/LMV226/LMV228 power detectors are offered in the thin 1.0 mm x 1.0 mm x 0.6 mm DSBGA package and the ultra thin 1.0 mm x 1.0 mm x 0.35 mm DSBGA package. The LMV225 and the LMV228 are also offered in the 2.2 mm x 2.5 mm x 0.8 mm WSON package.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LMV225/LMV226/LMV228 RF Power Detector for CDMA and WCDMA datasheet (Rev. L) | 22 Mar 2013 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| Application note | Reduce DC Pwr Consump in CDMA RF Pwr Amps Thru the LMV225 & Eff Switcher (Rev. A) | 06 May 2013 | ||
| User guide | AN-1817 LMV225/LMV228 WSON Evaluation Board (Rev. B) | 30 Apr 2013 | ||
| Application note | Use of LMV225 Linear-In-dB RF Pwr Detector In CDMA2000 (Rev. A) | 30 Apr 2013 | ||
| User guide | AN-1804 LMV225/LMV228 DSBGA Evaluation Board (Rev. A) | 25 Apr 2013 |
For additional terms or required resources, click any title below to view the detail page where available.
This board can be used to evaluate Texas Instruments LMV225/LMV228 RF detectors. These logarithmic power detectors are intended for use in CDMA and WCDMA applications. They have a 30 dB dynamic range and an RF frequency range from 450 MHz to 2 GHz. The LMV228 is designed to be used in combination (...)
This board can be used to evaluate Texas Instruments LMV225/LMV226/LMV228 RF detectors. These logarithmic power detectors are intended for use in CDMA and WCDMA applications. They have a 30 dB dynamic range and an RF frequency range from 450 MHz to 2 GHz. The LMV226/LMV228 are designed to be used (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| DSBGA (YPD) | 4 | Ultra Librarian |
| DSBGA (YZR) | 4 | Ultra Librarian |
| WSON (NGF) | 6 | Ultra Librarian |
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