LTC2327CMS-18#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC2327CMS-18#TRPBF is an 18-bit, 500ksps 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 at typical conditions. The device includes an onboard 2.048V temperature-compensated reference with a low drift of 20ppm/°C max and a single-shot capable reference buffer. It supports SPI-compatible serial I/O with daisy-chain mode and operates within a commercial temperature range of 0°C to 70°C.

Analog To Digital Converters (ADC) Feature Summary

• 18-Bit Resolution with Guaranteed No Missing Codes
• 500ksps Throughput Rate with Internal Conversion Clock
• True Bipolar Input Ranges: ±6.25V, ±10.24V, or ±12.5V
• Onboard 2.048V Reference with Low Drift (20ppm/°C Max)
• SPI-Compatible Serial Interface Supporting 1.8V to 5V Logic

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 #TRPBF suffix indicates tape and reel packaging for automated assembly. Confirm the CMS designation corresponds to the commercial temperature grade (0°C to 70°C). Ensure the specific lot date code meets project requirements as manufacturing schedules may vary.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high voltage bipolar inputs without external level shifting. The internal reference simplifies design but allows overdriving for higher precision if needed. Consider the 36mW power dissipation and nap mode for power-sensitive designs. Verify interface voltage compatibility between OVDD and the host controller.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2327-18 family of 18-bit SAR ADCs. The LTC2327CMS-18#TRPBF is the tape and reel version of the LTC2327CMS-18#PBF. Other variants include the IMS-18 for industrial temperatures (-40°C to 85°C) and the HMS-18 for extended temperatures (-40°C to 125°C).

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitutes include the LTC2327IMS-18#TRPBF for wider temperature ranges and the LTC2327HMS-18#TRPBF for extended industrial use. Direct pin-compatible replacements within the same package are limited to these temperature grades.