LTC2378HMS-18#PBF

Analog To Digital Converters (ADC) Overview

The LTC2378HMS-18#PBF is an 18-bit successive approximation register (SAR) analog-to-digital converter from Analog Devices. It operates on a single 2.5V supply with a fully differential input range of ±VREF, where VREF spans 2.5V to 5.1V. The device delivers a throughput rate of 1Msps with no pipeline delay or cycle latency. Key electrical specifications include a maximum integral nonlinearity (INL) of ±1.75 LSB, guaranteed 18-bit no missing codes, and a typical signal-to-noise ratio (SNR) of 102dB at fIN = 2kHz. Power consumption is 13.5mW at full sampling rate, scaling down to 2.25µW in power-down mode.

Analog To Digital Converters (ADC) Feature Summary

• 18-Bit Resolution with Guaranteed No Missing Codes
• 1Msps Throughput Rate with Internal Oscillator
• Digital Gain Compression (DGC) Functionality
• Low Power: 13.5mW at 1Msps, 2.25µW in Shutdown

Analog To Digital Converters (ADC) Applications

• Medical Imaging Systems
• High Speed Data Acquisition
• Industrial Process Control
• Portable or Compact Instrumentation
• Automatic Test Equipment (ATE)

Analog To Digital Converters (ADC) Procurement Notes

Verify the H-grade suffix indicates an extended operating temperature range of -40°C to 125°C. Confirm the #PBF suffix denotes lead-free packaging compliant with RoHS standards. Ensure the MSOP-16 package variant matches the PCB footprint requirements for thermal management.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high precision and speed are required within a low power budget. The DGC feature allows driving amplifiers to operate from a single positive supply by compressing the input range to 10%-90% of VREF. Verify that the external reference voltage falls within the 2.5V to 5.1V range to maintain specified performance metrics.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2378 series of low-power SAR ADCs. The 'H' designation specifically identifies the industrial grade capable of operation up to 125°C. Other variants in the family include C-grade (0°C to 70°C) and I-grade (-40°C to 85°C), available in both MSOP and DFN packages.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same package and temperature grade must be sourced from the manufacturer's current portfolio. Cross-model substitution requires verification of INL, SNR, and power dissipation specifications against the original design requirements.