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ADEMO141B

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Low-Noise Analog Integrator for use with PCB-Based di/dt Sensors

数据手册 (Rev. SpA) 产品选型表
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ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许，也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。
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概述

  • Single-supply operation: 2.97V to 3.63V
  • User configurable integrator gain, ADEMO141A gain at 50Hz, using different feedback capacitor
    • 397.9, CFB = 10nF
    • 265.3, CFB = 15nF
    • 180.9, CFB= 22nF
    • 102.0, CFB= 39nF
  • ADEMO141B gain at 50Hz, using different feedback capacitor
    • 49.7, CFB = 10nF
    • 33.2, CFB = 15nF
    • 22.6, CFB = 22nF
  • Low noise
    • ADEMO141A: 7.2nV√Hz at f = 45Hz to 65Hz
    • ADEMO141B: 18.8nV√Hz at f = 45Hz to 65Hz

The ADEMO141A/ADEMO141B is a low-drift, low-noise, fully-differential amplifier which can be operated as an analog integrator, for use with a PCB-based di/dt current sensor and analog-to-digital converter (ADC). It has a output common-mode voltage of 1.2V and supply voltage of 3.3V. The analog integrator amplifies signal and cancels the frequency dependance of the current sensor.

The ADEMO141A/ADEMO141B has high gain, low noise, and excellent common-mode rejection ratio (CMRR) and power-supply rejection ratio (PSRR) specifications, which makes it ideal for high accuracy energy measurement applications. The ADEMO141A/ ADEMO141B is specified over the extended industrial temperature (−40°C to +125°C), and is available in a 8-lead LFCSP.

For more details on the ADEMO141A/ADEMO141B, contact the local Analog Devices, Inc., sales office at www.analog.com/sales.

APPLICATIONS

  • Single-phase energy meters
  • Polyphase energy meters
  • Split-phase energy meters
  • Power quality monitoring
  • Protective devices
  • Smart breakers
  • EV chargers
  • Machine health
  • Smart power distribution units
ADEMO141B
Low-Noise Analog Integrator for use with PCB-Based di/dt Sensors
ADEMO141A-141B Functional Block Diagram ADEMO141A-141B Pin Configuration ADEMO141B Chip Illustration
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数据手册 1

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