LTC2328CMS-18#PBF

Analog To Digital Converters (ADC) Overview

The LTC2328CMS-18#PBF is an 18-bit, 1Msps successive approximation register (SAR) analog-to-digital converter with pseudo-differential inputs. Operating from a single 5V supply, it features a true bipolar input range of ±10.24V and achieves 95dB SNR. The device includes an onboard 2.048V temperature-compensated reference with a single-shot capable buffer. It utilizes an SPI-compatible serial interface supporting 1.8V to 5V logic levels and incorporates nap and sleep modes for power optimization.

Analog To Digital Converters (ADC) Feature Summary

• 18-bit resolution with guaranteed no missing codes and ±5LSB maximum INL
• 1Msps throughput rate with no pipeline delay or cycle latency
• True bipolar input ranges: ±6.25V, ±10.24V, or ±12.5V
• Integrated low drift (20ppm/°C max) 2.048V reference and buffer

Analog To Digital Converters (ADC) Applications

• Programmable Logic Controllers
• Industrial Process Control
• High Speed Data Acquisition
• Portable or Compact Instrumentation
• Automated Test Equipment (ATE)

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix #PBF indicates lead-free finish and tube packaging. Confirm the 'CMS' designation corresponds to the commercial temperature range (0°C to 70°C). Ensure compatibility with the required input voltage ranges and logic levels before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high accuracy at moderate speeds. The pseudo-differential input architecture simplifies driving circuits compared to fully differential designs. Consider the internal reference specifications; if lower drift is required, utilize the REFIN pin for external overdrive. Verify that the 16-lead MSOP package fits the thermal and spatial constraints of the design.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2328 family of low-power, single-supply ADCs. The CMS variant specifically denotes the commercial grade operating temperature range. Other variants in the series include IMS (industrial) and HMS (extended) grades, offering wider temperature capabilities while maintaining identical electrical performance characteristics.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacements within the same family include LTC2328IMS-18#PBF for industrial temperature range (-40°C to 85°C) and LTC2328HMS-18#PBF for extended range (-40°C to 125°C). These parts share the same pinout and electrical specifications but differ only in temperature rating.