LTC2498IUHF#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC2498IUHF#TRPBF is a 16-channel (8-differential) 24-bit No Latency Delta-Sigma ADC featuring Easy Drive technology for automatic differential input current cancellation. It supports rail-to-rail inputs with zero dynamic input current errors, enabling direct digitization of high-impedance sensors. The device includes an integrated high-accuracy temperature sensor and operates on a single supply from 2.7V to 5.5V. Key electrical parameters include 0.6µV RMS noise, 2ppm INL, and 1ppm offset error. It offers programmable 50Hz/60Hz rejection modes and a 2x speed mode achieving 15Hz data rates using the internal oscillator.

Analog To Digital Converters (ADC) Feature Summary

• Easy Drive Technology: Eliminates dynamic input current errors via patented sampling scheme, allowing direct connection to high-impedance sources without buffering.
• High Precision: Delivers 24-bit resolution with no missing codes, 2ppm INL, and 1ppm offset error.
• Integrated Temperature Sensor: Provides 1/30th °C resolution and ±2°C absolute accuracy for system compensation.
• No Latency Architecture: Digital filter settles in a single cycle, ensuring valid data immediately after channel switching.

Analog To Digital Converters (ADC) Applications

• Data Acquisition Systems requiring temperature compensation
• Industrial Process Control instrumentation
• Direct Sensor Digitizer applications

Analog To Digital Converters (ADC) Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified suppliers. Confirm the presence of the '2498' part marking on the package. Ensure the ordering suffix '#TRPBF' matches the required tape and reel packaging format. Check for RoHS compliance documentation as specified in the manufacturer's lead-free finish standards.

Analog To Digital Converters (ADC) Selection Notes

Select the 'I' grade variant for operation within the –40°C to 85°C industrial temperature range. Choose this model over buffered alternatives when minimizing external component count and avoiding buffer-induced offset drift is critical. Ensure the application requires a 38-lead QFN package and can accommodate the specific pinout configuration including the exposed ground pad.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC2498 family of precision analog-to-digital converters. It shares the same core architecture and pinout with the LTC2498CUHF and LTC2498HUHF variants, differentiated primarily by their operating temperature ranges. The IUHF designation specifically denotes the industrial temperature grade version packaged in a 5mm × 7mm plastic QFN.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC2498IUHF#PBF serves as the tube-packaged equivalent of this tape-and-reel component. Other members of the LTC2498 family, such as the LTC2499, offer similar functionality but may differ in specific interface requirements or channel configurations.