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1-, 2-, 4-Channel, Ultra-Low Power Electrochemical Sensor AFEs

Electrochemical Sensor AFE, Providing Both DC Current Measurements and Electrochemical Impedance Spectroscopy (EIS)

产品详情

The MAX30131/MAX30132/MAX30134 are 1, 2 and 4 channel (respectively) ultra-low power programmable analog front ends (AFE) for use with electrochemical sensors. The devices provide the biasing and complete measurement path, including the analog to digital converters (ADCs). The flexibility of the MAX30131/MAX30132/MAX30134 enables them to work with both two and three terminal electrochemical sensors, providing both DC current measurement and electrochemical impedance spectroscopy (EIS) measurement capability. The devices include an internal temperature sensor and programmable voltage reference, support external temperature monitoring and an external reference source and integrate voltage monitoring of bias and supply voltages for safety and compliance.

The MAX30131/MAX30132/MAX30134 support single-, dual-, and quad- two-terminal or three-terminal electrochemical sensors, respectively. Ultra-low power allows for the continuous biasing of the sensor to maintain accuracy and fast response when a measurement is required. The MAX30131/MAX30132/MAX30134 operate over a 1.7V to 5.0V voltage range. Total current consumption can be less than 5μA depending on the configuration, measurement frequency, and number of sensors. Communication is through a 4-pin SPI serial interface plus a configurable interrupt pin and four configurable general purpose input/outputs (GPIOs) for direct control of internal functions.

The MAX30131/MAX30132/MAX30134 are available in a 25-bump WLP package and operate over a 0°C to +70°C temperature range.

Design Solution: Choose an Electrochemical AFE with a Sweet Spot For Continuous Glucose Monitoring ›

主要特征

  • Multichannel Operation
    • Up to Four ndependent DC Channels
    • 1 Switchable EIS Channel
  • High Accuracy and Precision
    • Up to Four 12-Bit Voltage DACs
    • Up to Four 16-Bit Current ADCs
      • Programmable 0.8pA to 30pA Resolution
    • One 16-Bit EIS ADC
      • Programmable 0.014Hz to 27kHz Sine Wave Drive
    • 12-Bit Voltage System ADC
    • 16-Bit Temperature Sensor
    • Programmable, 30ppm/°C Voltage Reference
  • Autonomous Modes with 256 Word Configurable FIFO and Programmable Alarm
  • Long Battery Life for 2- and 3-Terminal Sensors
    • 3.5μA Continuous Bias Supply Current for Single 2- or 3-Terminal Sensor
    • Add 0.25μA for Each Additional Sensor
  • Small Size
    • 25-Bump WLP 2.93 x 2.93mm
  • Safety and Compliance
    • Monitor Sensor Bias Voltages for Compliance
    • Monitor Supply/Battery Voltage and Temperature
  • Simple and Robust Digital Interface
    • 8MHz 4-Wire SPI Interface
    • Programmable Interrupt
    • Four Programmable GPIOs
  • IEC61000-4-2 ESD: ±15kV Air, ±8kV Contact On Sensor Pins

应用/用途

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Parametric specs for Electrochemical Sensors
ISUPPLY (µA) (typ) 4.3
Shutdown Mode Supply Current (µA) (typ) 1
VSUPPLY (V) (min) 1.7
VSUPPLY (V) (max) 5.5
Resolution (bits) (ADC) 16
# Channels 2
Oper. Temp. (°C) 0 to +70
Package/Pins WLP/25
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技术文档

设计与质量

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$78.75

描述

The MAX30134 evaluation system provides a single platform to evaluate the functionality and features of the MAX30134 with DC current measurement and electrochemical impedance spectroscopy (EIS) measurement capabilities. The EV system includes a MAX30134 evaluation kit (EV kit) and a MAX32630FTHR Cortex- M4F microcontroller. The MAX32630FTHR provides power to the MAX30134 EV kit and contains the firmware necessary to use the EV kit GUI program. The EV kit ships with jumpers installed and supply voltages set to typical operating values. Optional connections exist that can be shunted to make use of different functionalities.

Note that the MAX30131/MAX30132/MAX30134 supports single-, dual-, and quad-channel electrochemical sensors, respectively and supports two-terminal or three-terminal configurations.

This Evaluation System is not a medical device.

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特征

  • Convenient Platform to Evaluate the MAX30131/MAX30132/MAX30134
  • Many Easy-to-Reach Test Points
  • Multichannel Operation
  • Windows® 7-, 8-, 10-Compatible GUI Software
  • Fully Assembled and Tested
  • Facilitates IEC61000-4-2 ESD Compliance Testing
  • Ultra-Low-Power Design

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参量

Parametric specs for Electrochemical Sensors
ISUPPLY (µA) (typ) 4.3
Shutdown Mode Supply Current (µA) (typ) 1
VSUPPLY (V) (min) 1.7
VSUPPLY (V) (max) 5.5
Resolution (bits) (ADC) 16
# Channels 2
Oper. Temp. (°C) 0 to +70
Package/Pins WLP/25

主要特征

  • Multichannel Operation
    • Up to Four ndependent DC Channels
    • 1 Switchable EIS Channel
  • High Accuracy and Precision
    • Up to Four 12-Bit Voltage DACs
    • Up to Four 16-Bit Current ADCs
      • Programmable 0.8pA to 30pA Resolution
    • One 16-Bit EIS ADC
      • Programmable 0.014Hz to 27kHz Sine Wave Drive
    • 12-Bit Voltage System ADC
    • 16-Bit Temperature Sensor
    • Programmable, 30ppm/°C Voltage Reference
  • Autonomous Modes with 256 Word Configurable FIFO and Programmable Alarm
  • Long Battery Life for 2- and 3-Terminal Sensors
    • 3.5μA Continuous Bias Supply Current for Single 2- or 3-Terminal Sensor
    • Add 0.25μA for Each Additional Sensor
  • Small Size
    • 25-Bump WLP 2.93 x 2.93mm
  • Safety and Compliance
    • Monitor Sensor Bias Voltages for Compliance
    • Monitor Supply/Battery Voltage and Temperature
  • Simple and Robust Digital Interface
    • 8MHz 4-Wire SPI Interface
    • Programmable Interrupt
    • Four Programmable GPIOs
  • IEC61000-4-2 ESD: ±15kV Air, ±8kV Contact On Sensor Pins

应用/用途

  • null
  • null
  • null
  • null

描述

The MAX30131/MAX30132/MAX30134 are 1, 2 and 4 channel (respectively) ultra-low power programmable analog front ends (AFE) for use with electrochemical sensors. The devices provide the biasing and complete measurement path, including the analog to digital converters (ADCs). The flexibility of the MAX30131/MAX30132/MAX30134 enables them to work with both two and three terminal electrochemical sensors, providing both DC current measurement and electrochemical impedance spectroscopy (EIS) measurement capability. The devices include an internal temperature sensor and programmable voltage reference, support external temperature monitoring and an external reference source and integrate voltage monitoring of bias and supply voltages for safety and compliance.

The MAX30131/MAX30132/MAX30134 support single-, dual-, and quad- two-terminal or three-terminal electrochemical sensors, respectively. Ultra-low power allows for the continuous biasing of the sensor to maintain accuracy and fast response when a measurement is required. The MAX30131/MAX30132/MAX30134 operate over a 1.7V to 5.0V voltage range. Total current consumption can be less than 5μA depending on the configuration, measurement frequency, and number of sensors. Communication is through a 4-pin SPI serial interface plus a configurable interrupt pin and four configurable general purpose input/outputs (GPIOs) for direct control of internal functions.

The MAX30131/MAX30132/MAX30134 are available in a 25-bump WLP package and operate over a 0°C to +70°C temperature range.

Design Solution: Choose an Electrochemical AFE with a Sweet Spot For Continuous Glucose Monitoring ›

技术文档

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心