LTC2668IUJ-16#TRPBF

Overview

The LTC2668IUJ-16#TRPBF is a 16-channel, 16-bit digital-to-analog converter (DAC) from Analog Devices. It features SoftSpan technology allowing independently programmable output ranges of 0V to 5V, 0V to 10V, ±2.5V, ±5V, and ±10V. The device includes an integrated precision reference with a maximum temperature coefficient of 10ppm/°C. It operates on analog supplies ranging from ±4.5V to ±15.75V and a digital supply of 1.71V to 5.5V. Key specifications include a maximum integral nonlinearity (INL) error of ±4 LSB at 16 bits, guaranteed monotonicity, and A/B toggle capability via software or dedicated pin.

Feature Summary

• 16 channels with 16-bit resolution and independently programmable SoftSpan output ranges up to ±10V
• Integrated precision reference with 10ppm/°C maximum temperature coefficient
• Built-in rail-to-rail output buffers driving ±10mA
• A/B toggle capability for switching between two programmed codes per channel

Applications

• Optical networking systems
• Precision instrumentation
• Data acquisition systems
• Automatic test equipment
• Process control and industrial automation

Procurement Notes

Verify the #TRPBF suffix indicates a tape and reel packaging format containing 2000 pieces. Confirm the IUJ designation corresponds to the industrial temperature grade operating range of –40°C to 85°C. Ensure the ordering information matches the specific lead-free finish requirements for the application environment.

Selection Notes

Select this component when high channel count and wide voltage swing are required in a compact footprint. The 6mm × 6mm 40-lead QFN package minimizes board space. Consider the internal reference accuracy versus external reference needs for gain drift optimization under heavy thermal loads.

Part Context

This part belongs to the LTC2668 family, which also offers 12-bit resolution variants and commercial/automotive temperature grades. The IUJ-16 variant specifically denotes the industrial grade with 16-bit resolution. Other suffixes like CUJ or HUJ indicate different temperature ranges while maintaining similar electrical characteristics.

Replacement Considerations

Direct replacements within the same family include LTC2668CUJ-16#TRPBF for commercial temperature applications and LTC2668HUJ-16#TRPBF for automotive/high-temperature environments. Verify that the temperature range and packaging format meet the specific design requirements.