MAX35103EHJ+T

Sensor And Detector Interfaces Overview

The MAX35103EHJ+T is a time-to-digital converter with an integrated analog front-end, real-time clock, and flash memory. It operates on a single supply voltage ranging from 2.3V to 3.6V. The device provides a time measurement accuracy of 20ps with a resolution of 3.8ps and a maximum measurement range of 8ms. Average power consumption is 5.5µA during ToF measurement and less than 125nA in duty-cycled temperature mode. It features an 8KB nonvolatile flash memory for data logging and supports up to four 2-wire RTD sensors.

Sensor And Detector Interfaces Feature Summary

• Integrated analog front-end with built-in amplifier and comparator for ultrasonic flow sensing
• Event timing mode reduces host microcontroller overhead to minimize system power consumption
• Supports high-accuracy temperature measurements using PT1000 and PT500 RTD sensors
• Includes 8KB nonvolatile flash memory and a built-in real-time clock

Sensor And Detector Interfaces Applications

• Ultrasonic heat meters
• Ultrasonic water meters
• Ultrasonic gas meters
• High-precision flow measurement for billing and leak detection

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix EHJ+T against the manufacturer's current ordering guide to confirm package type and RoHS compliance status. Confirm that the component remains active or check for end-of-life notifications prior to finalizing procurement plans. Ensure the source documentation matches the exact part number to avoid functional discrepancies.

Sensor And Detector Interfaces Selection Notes

Select this component when low average power consumption is critical for battery-operated ultrasonic metering applications. The integrated AFE and RTC reduce external component count compared to discrete solutions. Verify that the required time-of-flight measurement frequency and temperature sensor interface requirements align with the device's capabilities.

Sensor And Detector Interfaces Part Context

This part belongs to the MAX35103 family of reduced power time-to-digital converters. It is functionally similar to the MAX35101 but offers approximately half the average power consumption and increased maximum ToF measurement frequency in event timing mode. The device targets cost-sensitive analog front-end solutions for the ultrasonic heat and flow meter markets.

Sensor And Detector Interfaces Replacement Considerations

The MAX35101 is a comparable device within the same family, though it consumes more power and has a lower maximum ToF measurement frequency. The MAX35102 lacks the real-time clock and flash memory features found in the MAX35103.