LTC2983CLX#PBF

Sensor And Detector Interfaces Overview

The LTC2983CLX#PBF is a multi-sensor, high-accuracy digital temperature measurement system housed in a 48-lead (7mm × 7mm) LQFP package. It digitizes thermocouples, RTDs, thermistors, and diodes with 0.1°C accuracy and 0.001°C resolution. The device features 20 reconfigurable analog inputs, three 24-bit ΔΣ ADCs, and an internal reference with a maximum drift of 15ppm/°C. Operating on a single supply voltage between 2.85V and 5.25V, it includes built-in excitation current sources, automatic cold junction compensation, and fault detection circuitry.

Sensor And Detector Interfaces Feature Summary

• Directly digitizes standard and custom thermocouples, RTDs, thermistors, and diodes without external amplifiers or level shifters.
• Includes automatic cold junction compensation and linearization for virtually all standard thermocouple types.
• Features 20 flexible analog inputs allowing interchangeable sensor connections and configurable 2-, 3-, or 4-wire RTD setups.
• Provides simultaneous 50Hz/60Hz rejection and integrated fault detection for burn-out and short-circuit conditions.

Sensor And Detector Interfaces Applications

• Industrial process control systems requiring multi-point temperature monitoring
• HVAC equipment and building automation controllers
• Medical diagnostic devices and patient monitoring systems
• Automotive engine management and thermal testing equipment

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix to confirm the temperature grade and packaging format. The CLX designation indicates the commercial grade operating range of 0°C to 70°C. Ensure compatibility with the 48-lead LQFP footprint during PCB layout. Confirm that the lead-free finish meets RoHS requirements for your target market regulations before finalizing procurement orders.

Sensor And Detector Interfaces Selection Notes

Select this component when a single IC must handle multiple sensor types including thermocouples and RTDs. The C-grade variant is suitable for commercial applications where operation above 70°C is not required. Consider the ILX or HLX variants if extended industrial or high-temperature ranges are necessary. Verify that the 20-channel input count meets the system's sensor density requirements.

Sensor And Detector Interfaces Part Context

This part belongs to Analog Devices' LTC2983 family of digital temperature measurement systems. It serves as a central hub for converting various analog sensor signals into precise digital data via SPI. The device simplifies system design by integrating signal conditioning, excitation, and linearization functions typically found in discrete solutions.

Sensor And Detector Interfaces Replacement Considerations

LTC2983ILX#PBF: Industrial grade (-40°C to 85°C). LTC2983HLX#PBF: High-temperature grade (-40°C to 125°C).