LTC2367IMS-18#PBF

Analog To Digital Converters (ADC) Overview

The LTC2367IMS-18#PBF is an 18-bit, 500ksps successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. Operating from a single 2.5V supply, it features a pseudo-differential unipolar input range of 0V to VREF, where VREF ranges from 2.5V to 5.1V. The device achieves a typical Signal-to-Noise Ratio (SNR) of 97dB and Total Harmonic Distortion (THD) of –120dB at a 2kHz input frequency. It consumes 6.8mW at full throughput and guarantees no missing codes across the 18-bit resolution. The component is housed in a 16-lead MSOP package and supports an SPI-compatible serial interface with daisy-chain capability.

Analog To Digital Converters (ADC) Feature Summary

• 18-bit resolution with guaranteed no missing codes and ±2.5LSB maximum Integral Nonlinearity (INL)
• High-speed 500ksps sampling rate with zero cycle latency and internal conversion clock
• Low power consumption of 6.8mW at 500ksps, scaling down to 6.8µW at 500sps via auto power-down
• Flexible I/O interface supporting 1.8V, 2.5V, 3.3V, and 5V logic levels through OVDD supply

Analog To Digital Converters (ADC) Applications

• Medical imaging systems
• High-speed data acquisition
• Portable or compact instrumentation
• Industrial process control
• Automatic test equipment (ATE)

Analog To Digital Converters (ADC) Procurement Notes

Verify that the ordering suffix #PBF corresponds to the lead-free tube packaging variant rather than the tape and reel option (#TRPBF). Confirm the IMS temperature grade covers the required operating range of –40°C to 85°C for the specific application environment. Ensure the external reference voltage remains within the 2.5V to 5.1V specification to maintain performance metrics.

Analog To Digital Converters (ADC) Selection Notes

Select this component when 18-bit accuracy and 500ksps throughput are required without pipeline delay. The pseudo-differential input architecture is suitable for applications needing common-mode noise rejection while maintaining a unipolar signal range. Consider the external reference requirement, as the device lacks an internal reference source. The MSOP package offers a compact footprint for space-constrained designs compared to larger DFN options.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2367 family of SAR ADCs, which includes variants with different resolutions (16-bit, 18-bit) and temperature grades (C, I, H). The IMS designation specifically indicates the industrial temperature range (-40°C to 85°C). Other family members like the LTC2367CMS-18 share similar electrical characteristics but differ in operating temperature limits and packaging availability.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitutes include other parts within the LTC2367 series such as the LTC2367CMS-18#PBF for commercial temperature applications or the LTC2367HMS-18#PBF for extended high-temperature operation up to 125°C. These alternatives maintain pin compatibility and core functionality while adjusting thermal specifications.