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The MAX30132CWA is a 2-channel ultra-low power programmable analog front-end (AFE), mainly used in electrochemical sensors. This device provides bias and a complete measurement path, including an analog-to-digital converter (ADC). The flexibility of the MAX30132CWA enables them to be used in conjunction with two-terminal and three-terminal electrochemical sensors, providing DC current measurement and electrochemical impedance spectroscopy (EIS) measurement functions.

The features of MAX30132CWA include:

Support multi-channel operation

Up to four independent DC channels

One switchable EIS channel

High accuracy and high precision

Up to four 12-bit voltage Dacs

Up to four 16-bit current ADCs

Programmable resolution ranging from 0.8pA to 30pA

A 16-bit EIS ADC

Programmable sine wave drive from 0.014Hz to 27kHz

12-bit voltage system ADC

16-bit temperature sensor

Programmable, 30ppm/°C reference voltage source

Supports 256-word configurable FIFO and programmable alarm autonomous mode

The adoption of 2 and 3-terminal sensors can achieve a longer battery life

A single 2 or 3-terminal sensor provides a continuous bias power supply current of 3.5μA

For each additional sensor, the current increases by 0.25μA

Small size

25-pin WLP 2.93 x 2.93mm package

Safety and compliance

Monitor whether the bias voltage of the sensor complies with relevant specifications

Monitor the power supply/battery voltage and temperature

Simple and reliable digital interface

8MHz 4-wire SPI interface

Programmable interrupt

Four programmable GPIOs

IEC61000-4-2 ESD: ±15kV air-gap discharge, ±8kV Contact Discharge (Sensor pins)

Application scenarios

Electrochemical sensor ‌ : The MAX30132CWA is suitable for electrochemical sensors that require high precision measurement, such as continuous blood glucose monitors, sweat sensors, etc.

Wearable devices ‌ : Due to its low power consumption, the MAX30132CWA is suitable for wearable devices that need to run for a long time.

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