SX8733EWLTRT

Sensor And Detector Interfaces Overview

The SX8733EWLTRT is a digital temperature sensor featuring an SMBus interface and support for up to three external diodes alongside one internal sensor. It provides ±0.5°C accuracy from 25°C to 100°C with 0.125°C resolution across two selectable output formats. The device supports algorithmic, 3-point, and Kelvin parasitic resistance cancellation methods. Operating on a 2.7V to 5.5V supply, it draws 250µA at a 10Hz sampling rate. It includes programmable under/over-temperature alarms and is housed in an MLPD-6 package.

Sensor And Detector Interfaces Feature Summary

• Supports monitoring of one internal junction and up to three remote diode sensors via configurable ports.
• Integrates multiple parasitic series resistance cancellation techniques including algorithmic, 3-point, and Kelvin (4-wire) methods.
• Features programmable conversion rates and dual alarm outputs with user-defined thresholds.
• Communicates via a standard 2-wire SMBus v2.0 interface compatible with timeout detection.

Sensor And Detector Interfaces Applications

• Server thermal management
• Set Top Box temperature monitoring
• Projector cooling systems
• Printer thermal regulation
• Battery charger monitoring

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering code SX8733EWLTRT against the manufacturer's current product list to confirm availability and compliance status. Ensure that the MLPD-6 package dimensions match the target PCB land pattern requirements. Confirm that the system voltage levels are within the specified 2.7V to 5.5V operating range before integration.

Sensor And Detector Interfaces Selection Notes

Select this component when precise remote diode monitoring is required with minimal trace resistance error. The SX8733 is suitable for designs needing only two programmable ports, unlike the SX8743 or SX8744 which offer more channels. Consider the MLPD-6 package constraints if space is limited. Verify that the application environment stays within the -40°C to 125°C operating temperature limits.

Sensor And Detector Interfaces Part Context

The SX8733 belongs to Semtech's precision digital temperature sensor family, sharing architectural similarities with the SX8743 and SX8744. While the SX8744 offers pin-to-pin compatibility with the LM86, the SX8733 is distinct with its MLPD-6 packaging and reduced port count. This part serves as a cost-effective solution for applications requiring fewer than four sensor inputs.

Sensor And Detector Interfaces Replacement Considerations

The SX8744 is noted as pin-to-pin compatible with the LM86; however, direct substitution requires verifying pinout alignment between the MLPD-6 SX8733 and alternative packages. No other direct cross-model replacements are documented for this specific part number in the provided datasheet.

Sensor And Detector Interfaces FAQ

How does the SX8733 handle parasitic resistance in long traces?

It utilizes algorithmic, 3-point, or Kelvin (4-wire) cancellation methods to compensate for series resistance errors in the sensor path.

What is the maximum number of external sensors supported?

The device supports up to three external sensors connected in single-ended or differential modes.

Is the alarm output open-drain?

The alarm outputs are pseudo-open drain and require an external pull-up resistor connected to VDD.