Datasheet > LMH2110_1

LMH2110_1

更新时间： 2024-01-09 10:22:09

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evaluation board is designed to help the evaluation

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LMH2110_1 数据手册

National Semiconductor

Application Note 2014

Gerrit de Wagt and Jaimy de Koning

May 4, 2010

LMH2110 Evaluation Board

tercept only, reducing calibration effort significantly. The de-

vice operates with a single supply from 2.7V to 5V. The

LMH2110 has an RF power detection range from -40 dBm to

5 dBm and is ideally suited for use in combination with a di-

rectional coupler. Alternatively a resistive divider can be used

as well.

General Description

The evaluation board is designed to help the evaluation of the

LMH2110, which is a 45 dB Logarithmic RMS power detector

particularly suited for accurate power measurement of mod-

ulated 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 in-

sensitive measurement.

The device is active for EN = High, otherwise it is in a low

power consumption shutdown mode. To save power and pre-

vent discharge of an external filter capacitance, the output

(OUT) is high-impedance during shutdown.

The device has an RF frequency range from 50 MHz to 8 GHz.

It provides an accurate, temperature and supply insensitive,

output voltage that relates linearly to the RF input power in

dBm. The LMH2110's excellent conformance to a logarithmic

response enables an easy integration by using slope and in-

The LMH2110 power detector is offered in a tiny 6-bump mi-

croSMD package.

Figure 1 shows the LMH2110 Evaluation Board.

30109716

FIGURE 1. LMH2110 Evaluation Board

ply voltages and input signals can be applied to the on-board

connectors. The supply voltage is applied with connectors

P21 (VDD) and P22 (GND). The RF input signal is applied by

SMA connector P1. This RF signal is applied through an RF

generator and is connected with a 50Ω SMA cable. The de-

tector output can be measured via BNC connector P3.

Basic Operation

The circuit operates with a single supply form 2.7V to 5V and

has an RF power detection range from −40 dBm to 5 dBm.

The board consist of a single LMH2110 along with external

components soldered on a printed circuit board. External sup-

301097

www.national.com

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与LMH2110_1相关器件

型号	品牌	获取价格	描述	数据表
LMH2110TM	NSC	获取价格	8 GHz Logarithmic RMS Power Detector with 45 dB Dynamic Range
LMH2110TM/NOPB	TI	获取价格	具有 45dB 动态范围的 8GHz 对数 RMS 功率检测器 \| YFQ \| 6 \| -
LMH2110TMX	NSC	获取价格	8 GHz Logarithmic RMS Power Detector with 45 dB Dynamic Range
LMH2110TMX/NOPB	TI	获取价格	具有 45dB 动态范围的 8GHz 对数 RMS 功率检测器 \| YFQ \| 6 \| -
LMH2120	NSC	获取价格	Linear RMS power detector particularly suited for accurate
LMH2120	TI	获取价格	具有 40 dB 动态范围的 6GHz 线性 RMS 功率检测器
LMH2120UM	NSC	获取价格	IC TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PBGA6, MICRO SMD-6, Cellular Telephone Circ
LMH2120UM/NOPB	TI	获取价格	具有 40 dB 动态范围的 6GHz 线性 RMS 功率检测器 \| YFZ \| 6 \|
LMH2120UMX	NSC	获取价格	IC TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PBGA6, MICRO SMD-6, Cellular Telephone Circ
LMH2120UMX/NOPB	TI	获取价格	具有 40 dB 动态范围的 6GHz 线性 RMS 功率检测器 \| YFZ \| 6 \|

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