LTC2655BIUF-H16#PBF

Overview

The LTC2655BIUF-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 a full-scale output voltage of 4.096V. The device operates on a single supply voltage ranging from 4.5V to 5.5V. It incorporates high-performance, rail-to-rail output buffers that are guaranteed monotonic over the operating temperature range. 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 channel architecture with 16-bit resolution and ±4LSB maximum INL error
• Integrated 4.096V full-scale reference with 10ppm/°C max temperature coefficient
• Rail-to-rail output buffers guaranteed monotonic over temperature
• I²C compatible serial interface with selectable power-on reset to zero-scale or mid-scale

Applications

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

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free tube packaging. Confirm the 'H' designation corresponds to the 4.096V internal reference and 4.5V minimum supply requirement. Ensure the 'I' grade matches the required -40°C to 85°C industrial temperature range for the application environment.

Selection Notes

Select this part when four independent 16-bit voltage outputs are required with minimal external components. The integrated reference eliminates the need for external precision voltage sources. Choose the -H option for higher output swing compared to the -L option's 2.5V limit. Verify I²C bus speed requirements against the 400kHz fast mode capability.

Part Context

This component belongs to the LTC2655 family of quad DACs. Variants exist with different resolutions (12-bit), accuracy grades (C vs B), and internal reference voltages (2.5V vs 4.096V). The BIUF-H16 specifically denotes the Industrial temperature grade, B accuracy, UF QFN package, and H reference configuration.

Replacement Considerations

Direct pin-compatible substitutes within the same package include other LTC2655 variants such as LTC2655BCUF-H16#PBF for commercial temperature range or LTC2655BIUF-L16#PBF for lower voltage operation. Cross-family replacements like the LTC2656 offer octal channels but require different pinout consideration.