LTC2335CLX-18#PBF

Analog To Digital Converters (ADC) Overview

The LTC2335CLX-18#PBF is an 18-bit, low-noise, 8-channel multiplexed successive approximation register (SAR) analog-to-digital converter. It features 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 5V supply with flexible high-voltage rails, it delivers 1Msps throughput with no pipeline delay. Key electrical specifications include a typical SNR of 96.7dB, ±3LSB maximum INL in the ±10.24V range, and rail-to-rail input overdrive tolerance. The device integrates a 4.096V reference buffer and supports both SPI CMOS and LVDS serial interfaces.

Analog To Digital Converters (ADC) Feature Summary

• SoftSpan Input Ranges: Programmable per conversion for ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V signals.
• High Accuracy: Guaranteed 18-bit resolution with no missing codes; ±3LSB max INL in ±10.24V range.
• Wide Common Mode Range: Inputs accept voltages from VEE to VCC – 4V with 118dB CMRR.
• Flexible I/O: Pin-selectable SPI CMOS (1.8V to 5V) or 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 temperature grade suffix against project requirements. The 'C' designation indicates a commercial operating range of 0°C to 70°C. Industrial (-40°C to 85°C) and high-temperature (-40°C to 125°C) variants are available as separate part numbers. Confirm package availability and lead times with authorized distributors prior to ordering.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring multi-channel acquisition with varying voltage levels without external signal conditioning. Ensure the system power supplies accommodate the required VCC and VEE differential range (up to 38V). Verify that the digital interface logic level matches the OVDD supply voltage if using CMOS mode, or configure for LVDS if noise immunity is critical.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2335-18 family of 18-bit SAR ADCs. The CLX suffix denotes the tape-and-reel packaging format, while #PBF indicates a lead-free finish compliant with RoHS standards. The base model supports 8 channels with SoftSpan capabilities, distinguishing it from single-channel or fixed-range counterparts in the Analog Devices portfolio.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same package and feature set are limited. For higher channel counts, consider the LTC2336 series. For lower channel counts or different input ranges, evaluate the LTC2333 or LTC2334 families. Cross-model substitution requires verification of pinout compatibility and software register configuration differences.