| Brand | ADI |
| Date Code | 2112 |
| Packing | Tray |
| Package | WLP-25 |
| Minimum Packing | 2000pcs |
Analog Front End - AFE Electro chemical AFE with options for 1,
Features：
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
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 ›
Applications
Electrochemical Sensors
Continuous Glucose Monitors
Sweat Sensors
Wearable Devices
