MAX30134CWA+T

Analog Front End (AFE) Overview

The MAX30134CWA+T is a quad-channel ultra-low power analog front end (AFE) designed for electrochemical sensors. It integrates biasing, measurement paths, and ADCs to support DC current and electrochemical impedance spectroscopy (EIS). The device operates on a 1.7V to 5.5V supply with total current consumption under 5μA. It features four 16-bit current ADCs, one switchable EIS channel, and four 12-bit voltage DACs. Communication utilizes an 8MHz 4-wire SPI interface with configurable interrupts and GPIOs.

Analog Front End (AFE) Feature Summary

• Quad-channel operation supporting up to four independent DC channels and one switchable EIS channel
• High precision with 16-bit current ADCs and programmable resolution from 0.8pA to 30pA
• Ultra-low power consumption of less than 5μA, enabling continuous sensor biasing
• Integrated 16-bit temperature sensor and programmable voltage reference

Analog Front End (AFE) Applications

• Continuous Glucose Monitors
• Sweat Sensors
• Wearable Devices

Analog Front End (AFE) Procurement Notes

Verify the component status as active before procurement. Confirm the package type is 25-WLP (2.94x2.94mm) and ensure compatibility with the required 0°C to +70°C operating temperature range. Check RoHS3 compliance status for environmental regulations.

Analog Front End (AFE) Selection Notes

Select this model for applications requiring four independent electrochemical sensor channels. Ensure the system design accommodates the 25-bump WLP package dimensions. Verify that the host microcontroller supports the 8MHz SPI interface and can handle the configurable interrupt and GPIO requirements.

Analog Front End (AFE) Part Context

This part belongs to the MAX30131/MAX30132/MAX30134 family of ultra-low power AFEs. The MAX30134 specifically provides four channels, whereas the MAX30131 offers one and the MAX30132 offers two. All variants share similar electrical characteristics and pinouts relative to their channel count.

Analog Front End (AFE) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.