LTC2345IUK-16#PBF

Analog To Digital Converters (ADC) Overview

The LTC2345IUK-16#PBF is an octal, 16-bit, 200ksps simultaneous sampling successive approximation register (SAR) analog-to-digital converter. It features differential inputs with a wide common mode range and SoftSpan technology for per-channel input range configuration. The device operates from a 5V supply and includes an internal reference and buffer. It supports pin-selectable SPI CMOS or LVDS serial interfaces. Key performance metrics include ±1.25LSB maximum INL, guaranteed 16-bit resolution with no missing codes, 91dB typical SNR, and -113dB typical THD at 2kHz.

Analog To Digital Converters (ADC) Feature Summary

• Eight simultaneous sampling channels with 200ksps throughput per channel
• SoftSpan input ranges: ±4.096V, 0V to 4.096V, ±2.048V, or 0V to 2.048V
• Integrated 4.096V reference and buffer with 102dB typical CMRR
• Pin-selectable SPI CMOS (1.8V to 5V) or LVDS digital interface

Analog To Digital Converters (ADC) Applications

• Programmable Logic Controllers
• Industrial Process Control
• Medical Imaging
• High Speed Data Acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify the I suffix indicates an industrial temperature range of –40°C to 85°C. Confirm the UK package is a 48-lead 7mm x 7mm plastic QFN. Ensure the #PBF suffix denotes lead-free finish. Check that the specific ordering code matches the required grade and packaging format.

Analog To Digital Converters (ADC) Selection Notes

Select this component when eight independent channels require simultaneous sampling at 200ksps. Use the SoftSpan feature to accommodate varying signal amplitudes without external scaling. Choose between CMOS or LVDS interfaces based on system noise immunity and voltage level requirements. Ensure the 5V analog supply and compatible digital logic levels are available.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2345-16 family of octal SAR ADCs. The IUK-16#PBF designation specifies the industrial temperature grade, QFN package, and lead-free construction. Other variants in the series include C-grade (commercial) and H-grade (extended temperature) options with identical electrical specifications but different operating ranges.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacements within the same family include LTC2345CUK-16#PBF for commercial temperature and LTC2345HUK-16#PBF for extended temperature. These parts share the same pinout and functionality but differ only in the specified operating temperature range.