LTC2381CMS-16#PBF

Analog To Digital Converters (ADC) Overview

The LTC2381CMS-16#PBF is a 16-bit, 250ksps successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices. It operates from a single 2.5V supply with a fully differential input range of ±2.5V and dissipates 3.25mW at maximum throughput. The device features an SPI-compatible serial interface supporting 1.8V to 5V logic levels and includes a daisy-chain mode. Key performance metrics include a typical SNR of 92dB, ±2LSB maximum integral nonlinearity, and guaranteed 16-bit resolution without missing codes. It utilizes an internal oscillator for conversion timing and automatically powers down between conversions to minimize energy consumption.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with 250ksps sampling rate and no cycle latency
• Low power consumption: 3.25mW at full speed, scaling down in power-down mode
• SPI-compatible serial interface with daisy-chain capability and 1.8V–5V I/O compatibility
• Extended acquisition time of 3.25µs enabling the use of low-power ADC drivers

Analog To Digital Converters (ADC) Applications

• Medical imaging systems
• High-speed data acquisition
• Portable or compact instrumentation
• Industrial process control
• Low power battery-operated instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify that the specific suffix CMS indicates the commercial temperature grade (0°C to 70°C) and MSOP-16 package as listed in the order information table. Confirm that the #PBF designation corresponds to lead-free finish specifications. Ensure the source documentation explicitly matches the part number to avoid confusion with industrial or high-grade variants which share similar electrical characteristics but differ in operating temperature ranges.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit SAR ADC with low power dissipation and high dynamic range is required. The extended 3.25µs acquisition time allows for simpler driver circuits compared to faster converters. Ensure the application requires a fully differential input range of ±2.5V and can accommodate an external 2.5V reference voltage. Verify that the host system supports the SPI-compatible serial interface timing requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2381-16 family of low-power, high-speed SAR ADCs. The 'C' suffix denotes the commercial temperature range (0°C to 70°C), while 'MS' specifies the 16-lead plastic MSOP package. Other variants in the series include industrial (-40°C to 85°C) and high-temperature (-40°C to 125°C) grades, as well as DFN package options. All variants share identical electrical performance specifications.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same package and temperature grade are limited to other members of the LTC2381-16 family, such as the LTC2381IMS-16#PBF for industrial temperature operation. Cross-family replacements require verification of interface compatibility and pinout alignment.