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MAXQ3181
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MAXQ3181

  • 所属类别：电压检测器Voltage Detector
  • 产品名称：低功率，有功电能，多相AFE
  • 厂商：MAXIM
  • 生产批号：12+
  • 封装：sop
  • 库存状态：有库存
  • 库存量：3000
  • 最低订购量：1
  • 详细资料：点击查找MAXQ3181的pdf资料
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  • Product Introduction

MAXQ3181 low power, active electrical energy, multiphase AFE

description

MAXQ3181 is a dedicated power measurement front-end that collects and calculates multiphase voltage, current, active power and energy, as well as many other metered multiphase load parameters. The calculation results can be retrieved through an external host via the Serial Peripheral Interface (SPI™) bus on the chip. The bus can also be used to monitor the operation of an external master configuration MAXQ3181 and to monitor the status of actions.

MAXQ3181 perform voltage and current measurements, up to 7 external differential signal pairs can be measured using an integrated ADC. The eighth differential signal pair is used to measure the chip temperature. The internal amplifier automatically adjusts the current channel gain to compensate for the signal level of the low current channel.

Key features:

  • Compatible with 3-Phase/3-Wire, 3-Phase/4-Wire, and other 3-phase services
  • 0.1% active power and energy linearity error
  • 0.5% apparent power and energy linear error
  • 0.5% linear error for RMS voltage and RMS current
  • Neutral current measurement
  • Line Frequency (Hz)
  • Power factor
  • Sequence of instructions
  • Phase voltage loss detection
  • Programmable pulse width
  • Programmable no-load current threshold
  • Programmable meter constants
  • Programmable undervoltage and overvoltage detection thresholds
  • Programmable threshold current sensing
  • Ampere-hours at no voltage signal
  • On-chip digital temperature sensor
  • An accurate internal reference voltage of 2.048V (30ppm/°C typical) is also supported
  • Each phase of active power and energy, combined with 3 phases (kWh), positive and negative
  • Each phase and joint 3 phases are in power and energy
  • Support software meter calibration
  • Nonlinear compensation of the sensor for multi-point calibration up to 3 points
  • Power failure detection
  • Bidirectional reset input/output
  • SPI-compatible serial interface (Acitve low IRQ) outputs interrupt requests
  • 3.3V single supply, low power consumption (35MW typical)

Applications/Uses:

  • 3-phase active energy meter

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