LTC2655BCUF-H16#PBF

Overview

The LTC2655BCUF-H16#PBF is a quad, 16-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated precision reference with a maximum temperature coefficient of 10ppm/°C and operates within a supply voltage range of 4.5V to 5.5V. The device provides a full-scale output of 4.096V when using the internal reference. Each channel includes high-performance, rail-to-rail output buffers that are guaranteed monotonic over temperature. Communication is handled via a 2-wire I²C compatible serial interface supporting standard mode (100kHz) and fast mode (400kHz). The component is housed in a 20-lead 4mm × 4mm plastic QFN package.

Feature Summary

• Quad 16-bit resolution with ±4LSB maximum Integral Nonlinearity (INL)
• Integrated 4.096V full-scale reference with 10ppm/°C max temperature coefficient
• Rail-to-rail output buffers guaranteed monotonic over temperature
• I²C interface with selectable power-on reset to zero-scale or mid-scale

Applications

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

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free packaging and tube shipping configuration. Confirm the 'H' designation corresponds to the 4.096V full-scale output requirement and the 'B' grade specifies the ±4LSB INL performance level. Ensure the UF package matches the PCB footprint requirements for the 20-lead QFN form factor.

Selection Notes

Select this part if a quad DAC architecture with I²C control is required. The -H suffix mandates a minimum supply voltage of 4.5V; for lower voltage applications requiring 2.7V operation, the -L variant must be chosen. Verify that the 16-bit resolution and ±4LSB linearity meet system accuracy needs compared to the -C grade options which offer tighter linearity specifications.

Part Context

This component belongs to the LTC2655 family of quad DACs. Variants exist with different resolutions (12-bit vs 16-bit), accuracy grades (-C vs -B), and internal reference voltages (-L for 2.5V vs -H for 4.096V). The BCUF-H16 designation specifically identifies the commercial temperature grade, B-grade accuracy, QFN package, and H-grade reference voltage.

Replacement Considerations

Direct substitutes within the same family include LTC2655BIUF-H16#PBF for industrial temperature range operation. For 12-bit resolution equivalents, consider LTC2655CUF-H12#PBF or LTC2655BCUF-H12#PBF depending on accuracy requirements.