Overview
The LMV225SD/NOPB is a 30 dB RF power detector designed by Texas Instruments, specifically intended for use in CDMA and WCDMA applications. This device operates within an RF frequency range of 450 MHz to 2 GHz and provides accurate temperature and supply compensated output voltage that relates linearly to the RF input power in dBm. It is suitable for direct use in combination with resistive taps and is part of the LMV225, LMV226, and LMV228 family of power detectors.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | 6-WSON (2.2 mm x 2.5 mm x 0.8 mm) |
| RF Frequency Range | 450 MHz to 2 GHz |
| Input Power Range | -30 dBm to 0 dBm |
| Output Voltage Range | 0.2 V to 2 V |
| Supply Voltage | 2.7 V to 5.5 V |
| Supply Current | 8 mA |
| Operating Temperature Range | -40°C to 85°C |
| Accuracy | ±1 dB |
| Shutdown Mode | Logic Low |
Key Features
- 30 dB linear in dB power detection range
- Output voltage range from 0.2 V to 2 V, scalable to meet ADC input range requirements
- Logic Low shutdown mode for low power consumption
- Multi-band operation from 450 MHz to 2000 MHz
- Accurate temperature compensation
- Integrated filter for low-ripple average power detection of CDMA signals
- Available in DSBGA Thin, DSBGA Ultra Thin, and WSON packages
Applications
The LMV225SD/NOPB is ideally suited for various wireless communication applications, including:
- CDMA and WCDMA systems
- GSM, EDGE, GPRS, and TDMA applications (especially the LMV226 variant with buffered output)
- Cellular, CDMA2000, and other multi-band wireless systems
Q & A
- What is the RF frequency range of the LMV225SD/NOPB?
The RF frequency range is from 450 MHz to 2 GHz.
- What is the input power range of the LMV225SD/NOPB?
The input power range is from -30 dBm to 0 dBm.
- What is the output voltage range of the LMV225SD/NOPB?
The output voltage range is from 0.2 V to 2 V.
- What is the supply voltage range for the LMV225SD/NOPB?
The supply voltage range is from 2.7 V to 5.5 V.
- What is the operating temperature range of the LMV225SD/NOPB?
The operating temperature range is from -40°C to 85°C.
- Does the LMV225SD/NOPB have a shutdown mode?
- What types of packages are available for the LMV225SD/NOPB?
The device is available in DSBGA Thin, DSBGA Ultra Thin, and WSON packages.
- What is the accuracy of the power detection?
The accuracy is ±1 dB.
- Is the LMV225SD/NOPB suitable for multi-band operations?
- Does the LMV225SD/NOPB have integrated filtering for CDMA signals?
