LTC2391IUK-16#PBF

Overview

The LTC2391IUK-16#PBF is a 16-bit, 1Msps successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices. It operates from a single 5V supply and features a differential input range of ±4.096V. Key performance metrics include a typical Signal-to-Noise Ratio (SNR) of 94dB, Total Harmonic Distortion (THD) of -102dB, and Spurious-Free Dynamic Range (SFDR) of 104dB at an input frequency of 20kHz. The device integrates an internal reference with 0.5% initial accuracy and supports both parallel and serial digital interfaces. It is housed in a 48-lead QFN package.

Feature Summary

• 16-bit resolution with 1Msps sampling rate
• Internal 4.096V reference with ±20ppm/°C temperature coefficient
• High dynamic performance: 94dB SNR and 104dB SFDR
• Flexible digital interface supporting parallel and serial modes

Applications

• Precision data acquisition systems
• Industrial process control
• Medical instrumentation

Procurement Notes

Verify the manufacturer part number against official Analog Devices documentation to ensure authenticity. Confirm that the suffix #PBF indicates lead-free RoHS compliance. Check for active status and availability through authorized distributors, as supply constraints may apply. Ensure the QFN-48 package type matches the design requirements.

Selection Notes

Select this component when high precision and moderate speed are required. The integrated reference simplifies design but requires verification if external higher-precision references are needed. The dual interface options allow flexibility in connecting to microcontrollers or FPGAs. Consider the 125mW power dissipation for thermal management in the QFN-48 package.

Part Context

This part belongs to the LTC2393/LTC2391 family of low noise, high-speed SAR ADCs. It shares architectural similarities with other members like the LTC2393IUK-16#PBF but differs in specific performance optimizations and interface configurations. The IUK-16 designation specifies the industrial temperature range and 16-bit resolution variant within the QFN-48 package.

Replacement Considerations

Direct pin-compatible replacements within the same family include the LTC2393IUK-16#PBF, though performance characteristics such as noise and speed may vary. Verify datasheet specifications for any substitute to ensure compatibility with the existing system requirements.