LTC2369IMS-18#PBF

Analog To Digital Converters (ADC) Overview

The LTC2369IMS-18#PBF is an 18-bit, 1.6Msps 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 96.5dB and total harmonic distortion (THD) of –120dB at a 2kHz input frequency. It consumes 18mW at full throughput and includes an internal oscillator for conversion timing. The component supports SPI-compatible serial interfaces with daisy-chain capability and operates within an industrial temperature range of –40°C to 85°C.

Analog To Digital Converters (ADC) Feature Summary

• 18-bit resolution with guaranteed no missing codes and ±2.5LSB maximum integral nonlinearity (INL).
• High-speed 1.6Msps sampling rate with zero cycle latency and internal conversion clock.
• Low power consumption of 18mW at 1.6Msps, scaling down to 18μW at 1.6ksps.
• Flexible digital interface supporting 1.8V, 2.5V, 3.3V, and 5V logic levels via OVDD supply.

Analog To Digital Converters (ADC) Applications

• Medical imaging systems requiring high precision and speed.
• High-speed data acquisition platforms.
• Portable or compact instrumentation with battery operation constraints.
• Industrial process control applications.
• 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 IMS suffix corresponds to the –40°C to 85°C industrial temperature grade. Ensure compatibility with the required VREF range of 2.5V to 5.1V and 2.5V analog supply voltage. Check for availability of development kits such as DC1813A-E for performance validation.

Analog To Digital Converters (ADC) Selection Notes

Select this model when an 18-bit resolution and 1.6Msps throughput are required in a low-power SAR architecture. Choose the IMS variant over CMS or HMS if operation below 0°C or above 70°C is necessary. Ensure the application can accommodate the pseudo-differential input configuration and external reference requirements. Consider the MSOP-16 package dimensions for PCB layout constraints.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2369 family of 18-bit SAR ADCs. The IMS-18 designation specifies the industrial temperature range and MSOP package. Other variants include the CDE series in DFN packages and the H-grade for extended 125°C operation. The device shares architectural similarities with the LTC2367 and LTC2379 but differs in sampling rates and input configurations.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult Analog Devices marketing for parts specified with wider operating temperature ranges or alternative package options.