LTC2657BCUFD-H16#PBF

Overview

The LTC2657BCUFD-H16#PBF is an octal, 16-bit digital-to-analog converter (DAC) featuring a 4.096V full-scale output with an integrated reference. It operates from a single 4.5V to 5.5V supply and utilizes a 2-wire I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. The device includes built-in high-performance, rail-to-rail output buffers guaranteed monotonic over temperature. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±4 LSB, a settling time of 9.1µs for 16-bit accuracy, and ultralow DAC-to-DAC crosstalk of 0.8nV·s.

Feature Summary

• Octal architecture with 16-bit resolution and 4.096V full-scale output
• Integrated precision reference with 10ppm/°C maximum temperature coefficient
• Rail-to-rail output buffers with guaranteed monotonicity
• Ultralow crosstalk between channels (0.8nV·s typical)

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's selector guide to confirm package type and temperature grade. The UFD suffix denotes a 20-lead 4mm × 5mm plastic QFN package. Confirm that the H16 designation corresponds to the 4.096V full-scale option requiring a 4.5V to 5.5V supply range. Ensure compatibility with I²C bus voltage levels before integration.

Selection Notes

Select this component when multiple isolated analog outputs are required in a compact footprint. The H-option variant is suitable for designs operating strictly within the 4.5V to 5.5V supply range. For lower voltage applications requiring a 2.7V to 5.5V supply, the L-option variant provides a 2.5V full-scale output. Verify that the 400kHz I²C speed meets system timing requirements.

Part Context

This part belongs to the LTC2657 family of octal DACs, which also offers 12-bit resolution variants and TSSOP package options. The BC grade indicates a maximum INL of ±4 LSB, while the C suffix specifies the commercial temperature range of 0°C to 70°C. The H16 configuration specifically targets applications needing higher voltage swing compared to the L16 counterpart.

Replacement Considerations

Direct pin-compatible replacements within the same family include the LTC2657BCUFD-L16#PBF for 2.5V operation or the LTC2657BIFE-H16#PBF for TSSOP packaging. Cross-model substitution requires verification of I²C address configurations and register compatibility.