LMH2110

ACTIVE

8 GHz Logarithmic RMS Power Detector With 45 dB Dynamic Range

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Product details

Parameters

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Package | Pins | Size

DSBGA (YFQ) 6 0 mm² .88 x 1.28 open-in-new Find other IQ modulators

Features

  • Wide Supply Range from 2.7 V to 5 V
  • Logarithmic Root Mean Square Response
  • 45-dB Linear-in-dB Power Detection Range
  • Multi-Band Operation from 50 MHz to 8 GHz
  • LOG Conformance Better than ±0.5 dB
  • Highly Temperature Insensitive, ±0.25 dB
  • Modulation Independent Response, 0.08 dB
  • Minimal Slope and Intercept Variation
  • Shutdown Functionality
  • Tiny 6-Bump DSBGA Package
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Description

The LMH2110 is a 45-dB Logarithmic RMS power detector particularly suited for accurate power measurement of modulated RF signals that exhibit large peak-to-average ratios; that is, 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 8 GHz. It provides an accurate, temperature and supply insensitive output voltage that relates linearly to the RF input power in dBm. The LMH2110 device has excellent conformance to a logarithmic response, enabling easy integration by using slope and intercept only, reducing calibration effort significantly. The device operates with a single supply from 2.7 V to 5 V. The LMH2110 has an RF power detection range from –40 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.

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Technical documentation

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Type Title Date
* Datasheet LMH2110 8-GHz Logarithmic RMS Power Detector with 45-dB Dynamic Range datasheet (Rev. D) Jun. 30, 2015
Application notes AN-2014 LMH2110 Evaluation Board (Rev. B) Jul. 07, 2014

Design & development

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Hardware development

EVALUATION BOARDS Download
LMH2110 Evaluation Board
LMH2110TMEVAL
$149.00
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 modulated RF signals that exhibit large peak-to-average ratios, i.e. large variations of the signal envelope. Such signals are (...)

Features
  • Logarithmic root mean square response
  • 45 dB linear-in-dB power detection range
  • Multi-band operation from 50 MHz to 8 GHz
  • LOG conformance better than ±0.5 dB
  • Highly temperature insensitive, ±0.25 dB
  • Modulation independent response, 0.08 dB
  • Minimal Slope and Intercept variation
  • Shutdown functionality
  • Wide (...)

Reference designs

REFERENCE DESIGNS Download
High-Accuracy Logarithmic RMS Power Detector Reference Design for WLAN Applications
TIDA-00897 Dynamic transmit-power control is critical for improving spectral efficiency and reducing adjacent channel interference in wireless local area networks (WLANs). In addition, regulatory agencies worldwide require that transmit power be limited to certain level to reduce interference with other (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
DSBGA (YFQ) 6 View options

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