LTC2655IUF-H12#PBF

Overview

The LTC2655IUF-H12#PBF is a quad-channel, 12-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated reference with a maximum temperature coefficient of 10ppm/°C and a full-scale output voltage of 4.096V. The device operates on a single supply voltage ranging from 4.5V to 5.5V and utilizes a 2-wire I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Packaged in a 20-lead 4mm × 4mm QFN, it guarantees monotonicity over the industrial temperature range of –40°C to 85°C.

Feature Summary

• Quad-channel 12-bit resolution with rail-to-rail output buffers
• Integrated reference providing 4.096V full-scale output
• Maximum INL error of ±1 LSB and DNL of ±0.1 LSB
• Settling time of 3.9µs for ±1LSB accuracy

Applications

• Mobile communications systems
• Process control and industrial automation
• Instrumentation equipment
• Automatic test equipment
• Automotive applications

Procurement Notes

Verify that the component matches the specified industrial temperature grade (–40°C to 85°C) and the H-series internal reference configuration (4.096V full-scale). Confirm the package type is the 20-lead 4mm × 4mm QFN. Ensure the ordering suffix indicates lead-free construction and standard tube packaging as per the manufacturer's selection guide.

Selection Notes

Select this part when a quad-channel DAC with high precision and low power consumption is required. The H-option provides a higher full-scale voltage suitable for 5V systems, while the I-grade ensures performance across a wider industrial temperature range compared to the C-grade. Verify that the system supply voltage remains within the 4.5V to 5.5V range for optimal operation.

Part Context

This component belongs to the LTC2655 family of quad I²C DACs. It shares architectural similarities with other variants such as the LTC2655IUF-L12#PBF, which offers a 2.5V full-scale output, and the 16-bit versions like the LTC2655BIUF-H16#PBF. The 'I' designation specifically denotes the industrial temperature rating, distinguishing it from commercial grade parts.

Replacement Considerations

Direct substitutes include other members of the LTC2655 family with matching pinouts and specifications, such as the LTC2655CUF-H12#PBF for commercial temperature applications or the LTC2655IUF-L12#PBF for lower voltage requirements. Ensure any replacement maintains the same resolution, interface compatibility, and package dimensions.