LTC2353ILX-18#PBF

Analog To Digital Converters (ADC) Overview

The LTC2353ILX-18#PBF is a dual-channel, 18-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates with simultaneous sampling at 550ksps per channel and features buffered differential inputs with a wide common-mode range of ±10.24V. The device supports flexible SoftSpan input ranges including ±10.24V, 0V to 10.24V, ±5.12V, and 0V to 5.12V. It integrates an internal reference and buffer, offering pin-selectable SPI CMOS or LVDS serial interfaces. The component is housed in a 48-lead LQFP package and is rated for industrial temperatures from –40°C to 85°C.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel 18-bit SAR ADC with 550ksps simultaneous sampling throughput
• SoftSpan technology allowing independent per-channel configuration for ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V ranges
• Integrated picoamp-input analog buffers with 124dB typical CMRR and rail-to-rail overdrive tolerance
• Pin-selectable digital interface supporting both SPI CMOS (1.8V to 5V) and LVDS modes

Analog To Digital Converters (ADC) Applications

• Programmable Logic Controllers
• Industrial Process Control
• Power Line Monitoring
• Test and Measurement

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific temperature grade suffix when ordering. The ILX designation indicates an industrial operating range of –40°C to 85°C. Confirm that the #PBF suffix denotes lead-free and RoHS compliance status as specified in the manufacturer's documentation before finalizing procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high voltage differential inputs without external front-end conditioning. Ensure the system power supply accommodates the required VCC and VEE voltages for the desired input range. Verify that the host controller supports either the SPI CMOS or LVDS interface mode, as these are mutually exclusive based on pin selection.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2353-18 family of buffered dual 18-bit ADCs. The ILX variant specifically designates the industrial temperature grade (-40°C to 85°C), distinguishing it from the C-grade (0°C to 70°C) and H-grade (-40°C to 125°C) options within the same package and functional specification.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.