The LMH2120 is a 40 dB Linear RMS power detector particularly suited for accurate power measurement of modulated RF signals that exhibit large peak-to-average ratios, i.e, large variations of the signal envelope. Such signals are encountered in W-CDMA and LTE cell phones. The RMS measurement topology inherently ensures a modulation insensitive measurement.

The device has an RF frequency range from 50 MHz to 6 GHz. It provides an accurate, temperature and supply insensitive, output voltage that relates linearly to the RF input power in volt. The LMH2120's excellent conformance to a linear response enables an easy integration by using slope and intercept only, reducing calibration effort significantly. The device operates with a single supply from 2.7V to 5V. The LMH2120 has an RF power detection range from -35 dBm to 5 dBm and is ideally suited for use in combination with a directional coupler. Alternatively, a resistive divider can be used.

The device is active for EN = 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.

The LMH2120 power detector is offered in a tiny 6-bump DSBGA package.

• Linear Root Mean Square Response
• 40 dB Linear-in-V Power Detection Range
• Multi-Band Operation from 50 MHz to 6 GHz
• Lin Conformance Better than ±0.5 dB
• Highly Temperature Insensitive
• Modulation Independent Response
• Minimal Slope and Intercept Variation
• Shutdown Functionality
• Wide Supply Range from 2.7V to 5V
• Tiny 6-Bump DSBGA Package

• Frequency (Min) (MHz)
• 50
• Frequency (Max) (MHz)
• 8000
• Type
• RMS
• Supply voltage (Min) (V)
• 2.7
• Supply voltage (Max) (V)
• 5
• Supply current (mA)
• 2.9
• Number of channels (#)
• 1
• Dynamic range (Typ) (dB)
• 40

LMH2120的完整型号有：LMH2120UM/NOPB、LMH2120UMX/NOPB，以下是这些产品的关键参数及官网采购报价：

LMH2120UM/NOPB，工作温度：-40 to 85，封装：DSBGA (YFZ)-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LMH2120UM/NOPB的批量USD价格：1.346（1000+）

LMH2120UMX/NOPB，工作温度：-40 to 85，封装：DSBGA (YFZ)-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LMH2120UMX/NOPB的批量USD价格：1.16（1000+）

LMH2120UMEVAL — 具有 40 dB 动态范围的 6 GHz 线性 RMS 功率检测器

The LMH2120 is a 40 dB Linear RMS power detector particularly suited for accurate power measurement of modulated RF signals that exhibit large peak-to-average ratios, i.e, large variations of the signal envelope. Such signals are encountered in W-CDMA and LTE cell phones. The RMS measurement (...)