MAX6603ATB+

Sensor And Detector Interfaces Overview

The MAX6603ATB+ is a dual-channel platinum RTD-to-voltage signal conditioner designed for high-accuracy temperature measurement. It operates from a single +3V to +5.5V supply and features a typical supply current of 3.9mA to 5.5mA. The device provides a constant excitation current of 1mA (typ) with a temperature coefficient of -7 ppm/°C. It supports RTD resistance ranges from 150Ω to 900Ω, covering temperatures from -40°C to +1000°C. Maximum temperature errors are ±6°C (+400°C to +600°C at 5V), ±8°C (-40°C to +400°C at 5V), and ±12°C (+600°C to +1000°C at 5V). Input overvoltage protection extends to +16V, and the component is housed in a 10-pin TDFN-EP package.

Sensor And Detector Interfaces Feature Summary

• Amplifies Pt RTD signals with fully ratiometric operation for direct microcontroller ADC interfacing
• Provides ±5kV ESD protection on RTD inputs and +16V overvoltage fault protection
• Includes diagnostic outputs that assert low upon detecting open or short circuit faults
• Minimizes self-heating errors through low RTD excitation current

Sensor And Detector Interfaces Applications

• Engine Control Management to Meet EURO IV Regulations
• Braking Systems
• Industrial Temperature Sensors
• Food Transportation Monitoring Systems
• Industrial Process Measurements

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm lead-free status and packaging type. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity. Confirm that the received components match the exact part number specifications before integration into production lines.

Sensor And Detector Interfaces Selection Notes

Select this component when designing systems requiring simultaneous monitoring of two external platinum resistive temperature devices. It is suitable for applications needing high accuracy across wide temperature spans without external calibration. Consider its automotive-grade operating range and robust input protection for harsh industrial environments.

Sensor And Detector Interfaces Part Context

This device belongs to the MAX6603 family of signal conditioners manufactured by Analog Devices Inc./Maxim Integrated. It is specifically engineered to interface with standard DIN platinum RTDs. The ATB+ designation indicates a specific thermal and environmental qualification within the broader product line.

Sensor And Detector Interfaces Replacement Considerations

Consult official manufacturer documentation for verified substitute part numbers. Do not assume functional equivalence with other RTD amplifiers without verifying pinout compatibility and electrical parameter alignment.

Sensor And Detector Interfaces FAQ

How does the MAX6603 handle supply voltage variations?

The device provides a fully ratiometric output voltage that varies proportionally with the supply voltage. This allows connected microcontrollers using VCC as an ADC reference to maintain accurate temperature readings independent of supply fluctuations.

What fault conditions trigger the diagnostic outputs?

The DG1 and DG2 outputs assert low when the device detects RTD open circuits, RTD short circuits, or sense resistor shorts to ground or the supply voltage.

Can the MAX6603 be used with RTDs other than 200Ω?

Yes, the device can accommodate any Pt RTD with a resistance between 150Ω and 900Ω, provided the resulting temperature range falls within the specified operational limits.