LTC2389IUK-16#PBF

Overview

The LTC2389IUK-16#PBF is an 16-bit, 2.5Msps Successive Approximation Register (SAR) Analog-to-Digital Converter manufactured by Analog Devices (formerly Linear Technology). It operates from a single 5V supply and features pin-configurable analog input ranges, including fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), and pseudo-differential bipolar (±2.048V). The device integrates an internal reference and supports serial/parallel data interfaces. Key performance metrics include a Differential Nonlinearity (DNL) of 0.3 LSB, Integral Nonlinearity (INL) of 1.25 LSB, and a power dissipation of 162.5 mW at maximum sampling rate.

Feature Summary

• 16-bit resolution with 2.5Msps sampling rate
• Pin-configurable analog input ranges: Fully Differential, Pseudo-Differential Unipolar, and Bipolar
• Internal voltage reference and SAR architecture
• Low power consumption: 162.5 mW typical

Applications

• Industrial process control systems
• Medical instrumentation
• Data acquisition systems requiring high precision

Procurement Notes

Verify the specific suffix '#PBF' indicates lead-free tin-plated termination compliant with RoHS standards. Confirm the 'I' grade temperature range (-40°C to +85°C) matches application requirements. Check for availability as Mouser listings indicate potential regional sales restrictions for this specific part number.

Selection Notes

Select the LTC2389IUK-16#PBF when a single-channel, high-speed 16-bit conversion is required with flexible input configuration. The QFN-48 package is suitable for space-constrained PCB designs. Ensure the system can accommodate the 5V analog supply and that the 2.5Msps speed aligns with Nyquist requirements for the target signal bandwidth.

Part Context

This component belongs to the LTC2389-18 series family, which shares identical architectural features but varies in resolution (16-bit vs 18-bit). The IUK variant specifically denotes the 48-lead QFN package. It serves as a high-performance alternative to lower-speed SAR ADCs in applications demanding both speed and accuracy without external signal conditioning.

Replacement Considerations

Direct functional substitutes within the same family include the LTC2389IUK-18#PBF (18-bit version) if higher resolution is acceptable. For pin-compatible alternatives with different resolutions, consider the LTC2389ILX-16#PBF (LQFP package) or LTC2389IMS-16#PBF (MSOP package), noting that package changes require PCB footprint adjustments.