MAX9621AUB/V+T

Sensor And Detector Interfaces Overview

The MAX9621AUB/V+T is a dual-channel, 2-wire Hall-effect sensor interface designed for automotive applications. It operates within a supply voltage range of 5.5V to 18V and withstands transients up to 60V at the BAT pin. The device provides digital outputs (DOUT) compatible with logic levels up to 5.5V and analog outputs (AOUT) that mirror sensor current with a nominal gain of 0.05mA/mA. It features low-power shutdown mode consuming as little as 1µA, ±3V ground shift immunity, and ESD protection ratings of ±2kV HBM and ±200V MM. Packaged in a 10-pin µMAX format, it functions reliably from -40°C to +125°C.

Sensor And Detector Interfaces Feature Summary

• Interfaces two independent 2-wire Hall-effect sensors via high-side current sensing architecture
• Provides simultaneous digital switching signals and linear analog current mirroring outputs
• Includes active-low sleep mode for significant power reduction during idle states
• Features robust fault handling including short-to-ground detection and automatic blanking cycles

Sensor And Detector Interfaces Applications

• Window lifters and seat movers
• Electric sunroofs and door power locks
• Seatbelt buckle detection and steering column monitoring
• Ignition key switches and speed sensing systems

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix configuration when ordering. The 'V' designation indicates automotive qualification standards, while '+T' specifies tape and reel packaging. Confirm the exact part number against the manufacturer's official documentation to ensure correct package type and environmental rating compliance before procurement.

Sensor And Detector Interfaces Selection Notes

Select this component for designs requiring direct interfacing with 2-wire Hall sensors without external ground return wires. Ensure the application utilizes a supply voltage between 5.5V and 18V. Consider the analog output requirements for custom diagnostics or ADC integration if linear information is needed alongside standard digital switching.

Sensor And Detector Interfaces Part Context

This device belongs to the Maxim Integrated family of Hall-effect sensor interfaces, serving as a successor to the MAX9921. It consolidates the functionality required to monitor and control multiple magnetic sensors into a single BiCMOS chip, simplifying board layout by eliminating the need for separate ground connections for each sensor channel.

Sensor And Detector Interfaces Replacement Considerations

The MAX9921 is documented as a predecessor in the same product family. Verify functional compatibility regarding pinout and electrical characteristics before substitution. No other direct replacement part numbers are confirmed in the provided source material.