LTC2481IDD#PBF

Analog To Digital Converters (ADC) Overview

The LTC2481IDD#PBF is a 16-bit delta-sigma analog-to-digital converter featuring Easy Drive technology and an I2C interface. It provides rail-to-rail input range with zero differential input current, allowing direct digitization of high-impedance sensors. The device operates on a single supply from 2.7V to 5.5V and includes an internal oscillator. Key electrical characteristics include 2ppm INL, 1ppm offset error, and programmable gain from 1 to 256. It supports 50Hz/60Hz line rejection and offers a 2x speed mode. The component is housed in a 10-lead DFN package.

Analog To Digital Converters (ADC) Feature Summary

• Easy Drive Technology eliminates dynamic input current errors for high source impedance applications
• Programmable gain amplifier with settings from 1 to 256 in 8 steps
• Integrated I2C interface with six selectable addresses and one global address
• Internal trimmed oscillator with selectable 50Hz, 60Hz, or simultaneous rejection modes

Analog To Digital Converters (ADC) Applications

• Direct sensor digitizers
• Weight scales
• Strain gauge transducers
• Industrial process control instrumentation
• Digital voltmeters and meters

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when sourcing components. Confirm the IDD designation corresponds to the industrial temperature range of –40°C to 85°C. Ensure compatibility with the 10-lead DFN footprint during procurement planning.

Analog To Digital Converters (ADC) Selection Notes

Select this model for applications requiring high DC accuracy with minimal external calibration. The Easy Drive feature simplifies front-end design by removing the need for buffering amplifiers. Consider the 2x speed mode if higher data rates are required, noting the trade-off in noise performance.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2481 family of precision ADCs. The IDD variant specifically denotes the industrial temperature grade. It shares the same core architecture as the CDD (commercial) and HDD (extended) variants, differing primarily in operating temperature specifications and qualification standards.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC2481CDD#PBF serves as a lower-temperature commercial alternative. The LTC2481HDD#PBF provides extended temperature capability up to 125°C. Both share identical pinouts and functional specifications within their respective thermal ranges.