The LMV221 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 3.5 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 3.3V.
The LMV221 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. Figure (a) shows a detector with an additional output low pass filter. The filter frequency is set with RS and CS
| LMV221 | |
| RF Frequency (MHz) | 50-3500 |
| Dynamic Range (dB) | 40 |
| Detector Power Range | -45 to -5dBm |
| Accuracy (dB) | 0.5 |
| Inputs/Outputs | 1/1 |
| Transfer | Linear in dB |
| Supply Min (Volt) | 2.7 |
| Supply Max (Volt) | 3.3 |
| Supply Current (mA) | 7.2 |
| Shutdown | Yes |
| Detector | Ext Coupler, Internal Det |
| VCO Freq Range | 50MHz to 3.5GHz |
| Application | CDMA,WCDMA,UTMS,GSM,GPRS,802.11 |
| Channels (Channels) | 1 |
| PLL Type | Single |
| 培训内容 | 型号 | 软件/工具类型 |
| LMV221 Evaluation Module | LMV221EVM | 开发电路板/EVM |
