LTC2496CUHF#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC2496CUHF#TRPBF is a 16-bit, 8-differential or 16-single-ended channel delta-sigma analog-to-digital converter featuring Easy Drive input current cancellation. It operates on a single supply voltage ranging from 2.7V to 5.5V with a typical conversion current of 160µA. The device integrates an internal oscillator running at 307.2kHz and supports simultaneous 50Hz/60Hz line frequency rejection. Key electrical specifications include 2ppm integral nonlinearity (INL), 0.6µVRMS output noise, and a rail-to-rail common mode input range extending from GND to VCC. The component is housed in a 38-lead 5mm × 7mm QFN package.

Analog To Digital Converters (ADC) Feature Summary

• Easy Drive Technology: Eliminates dynamic differential input current errors, allowing direct connection of high-impedance sensors without external buffering.
• No Latency Architecture: Digital filter settles in a single cycle, ensuring the first conversion after channel selection is valid.
• High Accuracy: Provides 2ppm INL, 1ppm offset error, and 15ppm full-scale error with no missing codes.
• Integrated Oscillator: Includes an internal 307.2kHz clock source for simplified system design.

Analog To Digital Converters (ADC) Applications

• Data Acquisition Systems requiring multi-channel input
• Direct Sensor Digitization for high-impedance sources
• Industrial Process Control instrumentation
• Instrumentation applications demanding high DC accuracy

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix #TRPBF indicates Tape and Reel packaging. Confirm the 'C' grade designation corresponds to the commercial temperature range of 0°C to 70°C. Ensure the 38-lead QFN package dimensions align with the target PCB footprint requirements.

Analog To Digital Converters (ADC) Selection Notes

Select this model for applications requiring 16-bit resolution with minimal external components due to the integrated oscillator and Easy Drive feature. Choose the CUHF variant over the IUHF version if the operating environment remains within the 0°C to 70°C commercial temperature range. Verify that the 2.7V to 5.5V supply voltage range matches the system power rails.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC2496 family of 16-bit delta-sigma ADCs. It shares the same core architecture and pinout as the industrial grade LTC2496IUHF but is specified for commercial temperature operations. The part is designed to replace older multiplexed ADC solutions by integrating signal conditioning features directly into the converter front end.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC2496IUHF#TRPBF is the industrial temperature grade equivalent. Other members of the family include the LTC2494 (with PGA) and LTC2497 (with I2C interface). Direct pin-compatible substitutes require verification of interface compatibility and temperature ranges.

Analog To Digital Converters (ADC) FAQ

How does Easy Drive technology benefit high-impedance sensor interfaces?

It automatically cancels differential input current, eliminating the need for external buffer amplifiers and allowing direct digitization of high-impedance sources while maintaining accuracy.

What is the latency behavior when switching between input channels?

The device has no latency; the digital filter settles in a single cycle, making the first conversion result valid immediately after a new channel is selected via the SDI pin.

Can the input voltage exceed the supply voltage?

Yes, the absolute common mode input range extends from GND - 0.3V to VCC + 0.3V, allowing signals to swing slightly beyond the supply rails.