LTC2335ILX-16#PBF

Analog To Digital Converters (ADC) Overview

The LTC2335ILX-16#PBF is a 16-bit, low-noise, 8-channel multiplexed successive approximation register (SAR) analog-to-digital converter. It features differential inputs with a wide common mode range and SoftSpan technology for configurable input ranges including ±10.24V, 0V to 10.24V, ±5.12V, and 0V to 5.12V. Operating from a single 5V supply, it achieves a throughput of 1Msps with guaranteed 16-bit resolution without missing codes. The device integrates a 4.096V reference and buffer, supports SPI CMOS and LVDS serial interfaces, and operates within an industrial temperature range of –40°C to 85°C.

Analog To Digital Converters (ADC) Feature Summary

• SoftSpan Input Ranges: Configurable per channel for ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V signals.
• High Accuracy: Guaranteed 16-bit no missing codes, ±1 LSB maximum INL, and 94.4dB typical SNR.
• Wide Common Mode Range: Inputs tolerate voltages from VEE to VCC–4V with 118dB CMRR.
• Flexible I/O: Supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces.

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 operating temperature grade matches the application requirements. The 'I' suffix indicates an extended industrial range of –40°C to 85°C. Confirm that the LQFP-48 package dimensions align with the PCB footprint design. Ensure power supply decoupling capacitors are placed close to the VCC, VEE, and VDD pins as specified in the datasheet.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high voltage differential inputs require direct digitization without external signal conditioning. The integrated SoftSpan feature eliminates the need for external attenuators or level shifters for standard industrial voltage ranges. Consider the LVDS interface option if long cable runs or high-speed noise immunity is required over the CMOS interface.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2335 family of octal 16-bit SAR ADCs. The ILX-16 variant specifically denotes the industrial temperature grade (-40°C to 85°C) and the LX suffix indicating the tape-and-reel packaging format, while #PBF confirms lead-free compliance. Other grades include CLX for commercial and HLX for high-temperature operation.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacements within the same family include LTC2335CLX-16#PBF for commercial temperatures and LTC2335HLX-16#PBF for high-temperature applications. Cross-family alternatives like the LTC2353 offer higher sampling rates but different channel counts and interface options.