LMV225  Product Folder

The LMV225 is a 30dB RF power detector intended for use in CDMA and WCDMA applications. The device has an RF frequency range from 450MHz to 2GHz. 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 5V. The LMV225 has an integrated filter for low-ripple average power detection of CDMA signals with 30dB dynamic range. Additional filtering can be applied using a single external capacitor.

The LMV225 has an RF power detection range from -30dBm to 0dBm and is ideally suited for direct use in combination with resistive taps. The device is active for Enable = HI, otherwise it goes into 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 output signal bandwidth can optionally be lowered externally as well.

The LMV225 power detector is offered in the small 1.0mm x 1.0mm x 0.6mm micro SMD package

• 30dB linear in dB power detection range
• Output voltage range 0.2 to 2V
• Logic low shutdown
• Multi-band operation from 450MHz to 2000MHz
• Accurate temperature compensation
• micro SMD package 1.0mm x 1.0mm x 0.6mm

• CDMA RF power control
• WCDMA RF power control
• CDMA2000 RF power control
• PA modules