LTC2335ILX-18#PBF

Analog To Digital Converters (ADC) Overview

The LTC2335ILX-18#PBF is an 18-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, allowing per-conversion configuration of input ranges including ±10.24V, 0V to 10.24V, ±5.12V, and 0V to 5.12V. Operating from a single 5V supply with flexible high-voltage rails, it delivers 1Msps throughput with no pipeline delay. Key electrical specifications include ±3LSB maximum integral nonlinearity, guaranteed 18-bit resolution without missing codes, and a typical signal-to-noise ratio of 96.7dB.

Analog To Digital Converters (ADC) Feature Summary

• SoftSpan Input Ranges: Programmable per conversion for ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V, ±12.5V, 0V to 12.5V, ±6.25V, or 0V to 6.25V.
• High Accuracy: Guaranteed 18-bit resolution with no missing codes; ±3LSB maximum INL in ±10.24V range.
• Wide Common Mode Range: Supports VEE ≤ VCM ≤ VCC – 4V with 118dB CMRR and rail-to-rail input overdrive tolerance.
• Flexible Interfaces: Pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial I/O options.

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 ordering suffix #PBF indicates lead-free finish and RoHS compliance. Confirm the temperature grade 'I' corresponds to the -40°C to +85°C operating range specified for this part number. Ensure the package matches the 48-lead LQFP form factor. Check for specific manufacturer lot traceability requirements if applicable to your procurement process.

Analog To Digital Converters (ADC) Selection Notes

Select this component when multi-channel acquisition with varying voltage levels is required. The SoftSpan feature eliminates external attenuation circuits for mixed-signal environments. Choose the LVDS interface for noise-immune long-distance digital transmission or CMOS for standard logic compatibility. Ensure the system power supplies accommodate the required VCC and VEE differences for the target input common mode voltages.

Analog To Digital Converters (ADC) Part Context

This device belongs to the LTC2335 family of octal SAR ADCs. The ILX-18 designation specifies the 18-bit resolution variant housed in a 48-lead LQFP package with industrial temperature grading. It serves as a high-density solution for replacing multiple single-channel converters in complex data acquisition systems.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2335CLX-18#PBF (commercial temp) and LTC2335HLX-18#PBF (extended temp). Verify that substitute parts maintain the same SoftSpan configuration capabilities and interface timing characteristics.