- 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 4GHz 40dB 对数功率检测器
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The LMH2100 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
4 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 LMH2100 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. 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 will lower 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.- Supply Voltage: 2.7 V to 3.3 V
- Output Voltage: 0.3 V to 2 V
- 40-dB Linear in dB Power Detection Range
- Shutdown
- Multi-Band Operation from 50 MHz to 4 GHz
- 0.5-dB Accurate Temperature Compensation
- External Configurable Output Filter Bandwidth
- 0.4-mm Pitch DSBGA Package
- Frequency (Min) (MHz)
- 50
- Frequency (Max) (MHz)
- 4000
- Type
- Logarithmic
- Supply voltage (Min) (V)
- 2.7
- Supply voltage (Max) (V)
- 3.3
- Supply current (mA)
- 7.1
- Number of channels (#)
- 1
- Dynamic range (Typ) (dB)
- 40
LMH2100的完整型号有：LMH2100TM/NOPB、LMH2100TMX/NOPB，以下是这些产品的关键参数及官网采购报价：
LMH2100TM/NOPB，工作温度：-40 to 85，封装：DSBGA (YFQ)-6，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LMH2100TM/NOPB的批量USD价格：1.385（1000+）
LMH2100TMX/NOPB，工作温度：-40 to 85，封装：DSBGA (YFQ)-6，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LMH2100TMX/NOPB的批量USD价格：1.194（1000+）
LMH2100EVAL — 用于 LMH2100 对数功率检测器的评估板
This evaluation board is designed to aid in the characterization of National Semiconductors LMH2100 Logarithmic Power Detector. This board simplifies the measurement of the DC output voltage that the LMH2100 produces in response to the power level of the RF signal applied to the RF input. Use the (...)
