- 制造厂商：TI
- 产品类别：射频与微波
- 技术类目：射频功率检测器
- 功能描述：用于 CDMA 和 WCDMA 的 50MHz 至 3.5GHz 40dB 对数功率检测器
- 点击这里打开及下载LMV221的技术文档资料
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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 2.7 V to 3.3 V.
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 achieved 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 lowers 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.- 2.7-V to 3.3-V Supply Voltage
- 40-dB Linear in dB Power Detection Range
- 0.3-V to 2-V Output Voltage Range
- Shutdown
- Multi-Band Operation from 50 MHz to 3.5 GHz
- 0.5-dB Accurate Temperature Compensation
- External Configurable Output Filter Bandwidth
- 2.5 mm × 2.2 mm × 0.8 mm 6-pin WSON Package
- Frequency (Min) (MHz)
- 50
- Frequency (Max) (MHz)
- 3000
- Type
- Logarithmic
- Supply voltage (Min) (V)
- 2.7
- Supply voltage (Max) (V)
- 3.3
- Supply current (mA)
- 7.2
- Number of channels (#)
- 1
- Dynamic range (Typ) (dB)
- 40
LMV221的完整型号有：LMV221SD/NOPB、LMV221SDX/NOPB，以下是这些产品的关键参数及官网采购报价：
LMV221SD/NOPB，工作温度：-40 to 85，封装：WSON (NGF)-6，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LMV221SD/NOPB的批量USD价格：1.508（1000+）
LMV221SDX/NOPB，工作温度：-40 to 85，封装：WSON (NGF)-6，包装数量MPQ：4500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LMV221SDX/NOPB的批量USD价格：1.3（1000+）
LMV221SD/NOPB，工作温度：-40 to 85，封装：WSON (NGF)-6，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LMV221SD/NOPB的批量USD价格：1.508（1000+）
LMV221SDX/NOPB，工作温度：-40 to 85，封装：WSON (NGF)-6，包装数量MPQ：4500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LMV221SDX/NOPB的批量USD价格：1.3（1000+）
