LTC2668HUJ-12#TRPBF

Overview

The LTC2668HUJ-12#TRPBF is a 16-channel, 12-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. Key electrical parameters include a settling time of 15.5µs for the ±10V range, integral nonlinearity (INL) of ±0.2 LSB, and differential nonlinearity (DNL) of ±0.05 LSB. It operates on analog supplies of ±4.5V to ±15.75V and digital logic levels as low as 1.71V via a 3-wire SPI interface.

Feature Summary

• 16 independent channels with 12-bit resolution and SoftSpan output range configuration
• Integrated 2.5V reference with 10ppm/°C max temperature coefficient
• A/B toggle capability for rapid switching between two programmed codes per channel
• Built-in 16:1 analog multiplexer for monitoring DAC outputs

Applications

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

Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to the Tape and Reel packaging containing 2000 pieces. Confirm the H grade indicates an operating temperature range of –40°C to 125°C. Ensure the specific lot date code meets project requirements, as manufacturing lead times may vary.

Selection Notes

Select this part when 16 channels are required in a single package. Choose the HUJ variant for the 40-lead QFN package. Verify that the 12-bit resolution meets system accuracy needs compared to the 16-bit version. Ensure supply voltages support the desired output swing and load current requirements.

Part Context

This component belongs to the LTC2668 family of SoftSpan DACs. The HUJ-12 designation specifies the automotive temperature grade (H), the 40-lead QFN package (UJ), and the 12-bit resolution (12). The TRPBF suffix indicates tape and reel packaging with lead-free finish.

Replacement Considerations

Compatible substitutes within the same family include LTC2668IUJ-12#TRPBF for industrial temperature range or LTC2668CUJ-12#TRPBF for commercial range. For higher resolution, consider LTC2668HUJ-16#TRPBF.