LTC2389ILX-16#PBF

Overview

The LTC2389ILX-16#PBF is a 16-bit, 2.5Msps successive approximation register (SAR) analog-to-digital converter from Analog Devices Inc. It operates on a single 5V supply and features pin-configurable analog input ranges: ±4.096V fully differential, 0V to 4.096V pseudo-differential unipolar, and ±2.048V pseudo-differential bipolar. The device achieves ±1LSB maximum INL with no missing codes at 16 bits. Typical SNR is 96.0dB in fully differential mode and 93.5dB in pseudo-differential mode. It includes an internal 4.096V reference with 0.5% initial accuracy and dissipates 162.5mW at full throughput.

Feature Summary

• Pin-configurable analog input ranges including fully differential, pseudo-differential unipolar, and bipolar modes
• Guaranteed 16-bit resolution with no missing codes and ±1LSB maximum integral nonlinearity
• Internal 4.096V precision reference with ±20ppm/°C maximum temperature coefficient
• Parallel and serial I/O interfaces with 1.8V to 5V logic levels

Applications

• Medical Imaging
• High Speed Data Acquisition
• Industrial Process Control
• Instrumentation
• Automated Test Equipment

Procurement Notes

Verify the ordering suffix #PBF indicates lead-free finish and tray packaging for this specific part number. Confirm the 'I' grade designation corresponds to the –40°C to 85°C operating temperature range. Ensure the LX package variant matches the required 48-lead LQFP footprint for PCB layout compatibility.

Selection Notes

Select this component when a single 5V supply is available and pin-configurable input ranges are required to simplify signal conditioning. The internal reference eliminates external components for moderate accuracy needs. Verify that the 162.5mW power dissipation fits within the thermal budget of the 7mm × 7mm LQFP package under the expected ambient conditions.

Part Context

This part belongs to the LTC2389 family of high-speed SAR ADCs. The ILX-16#PBF specifically denotes the industrial temperature grade (-40°C to 85°C), the LX plastic LQFP package, and the 16-bit resolution variant. It shares architectural similarities with other members like the LTC2389-18 but offers fixed 16-bit performance optimized for cost and power efficiency.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. Designers should consult Analog Devices marketing or distributor databases for cross-reference information regarding pin-compatible or functionally equivalent alternatives.