- 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：具有 40dB 动态范围的 3GHz 快速响应线性功率检测器
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The LMH2121 is an accurate fast-responding power detector / RF envelope detector. Its response between an RF input signal and DC output signal is linear. The typical response time of 165 ns makes the device suitable for an accurate power setting in handsets during a rise time of RF transmission slots. It can be used in all popular communications standards: 2G/3G/4G/WAP.
The LMH2121 has an input range from −28 dBm to +12 dBm. Over this input range the device has an intrinsic high insensitivity for temperature, supply voltage and loading. The bandwidth of the device is from 100 MHz to 3 GHz, covering 2G/3G/4G/WiFi wireless bands.
As a result of the unique internal architecture, the device shows an extremely low part-to-part variation of the detection curve. This is demonstrated by its low intercept and slope variation as well as a very good linear conformance. Consequently the required characterization and calibration efforts are low.
The device is active for EN = High; otherwise it is in a low power consumption shutdown mode. To save power and allow for two detector outputs in parallel, the output (OUT) is high impedance during shutdown.
The LMH2121 is offered in a tiny 4-bump DSBGA package: 0.866 mm x 1.07 mm x 0.6 mm.
- Linear Response
- 40 dB Power Detection Range
- Very Low Supply Current of 3.4 mA
- Short Response Time of 165 ns
- Stable Conversion Gain of 3.6 V/VRMS
- Multi-Band Operation from 100 MHz to 3 GHz
- Very Low Conformance Error
- High Temperature Stability of ±0.5 dB
- Shutdown Functionality
- Supply Range from 2.6V to 3.3V
- Package:
- 4-Bump DSBGA, 0.4mm Pitch
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- Frequency (Min) (MHz)
- 100
- Frequency (Max) (MHz)
- 6000
- Type
- Peak
- Supply voltage (Min) (V)
- 2.6
- Supply voltage (Max) (V)
- 3.3
- Supply current (mA)
- 3.4
- Number of channels (#)
- 1
- Dynamic range (Typ) (dB)
- 40
LMH2121的完整型号有：LMH2121TME/NOPB、LMH2121TMX/NOPB，以下是这些产品的关键参数及官网采购报价：
LMH2121TME/NOPB，工作温度：-40 to 85，封装：DSBGA (YFQ)-4，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LMH2121TME/NOPB的批量USD价格：0.876（1000+）
LMH2121TMX/NOPB，工作温度：-40 to 85，封装：DSBGA (YFQ)-4，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LMH2121TMX/NOPB的批量USD价格：0.755（1000+）
LMH2121TMEVAL — LMH2121EVAL 功率检测器射频包迹检测器评估板/模块
功率检测器射频封装检测器评估板/模块EVM 采用单电源供电，其工作电压范围为 2.6V 至 3.3V，并具备 LMH2121 RF 功率检测功能，检测范围从 -28 dBm 到 +12 dBm。该评估板包括单一的 LMH2121 以及焊接在印刷电路板上的外部部件。外部电源电压和输入信号可用于板载连接器。
