LTC2657BCUFD-L16#TRPBF

Overview

The LTC2657BCUFD-L16#TRPBF is an octal 16-bit digital-to-analog converter (DAC) from Analog Devices, housed in a 20-lead 4mm × 5mm QFN package. It features rail-to-rail buffered voltage outputs and an integrated reference with a maximum temperature coefficient of 10ppm/°C. The device operates on a single 2.7V to 5.5V supply and utilizes a 2-wire I²C serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±4LSB, guaranteed monotonicity over temperature, and ultralow crosstalk between channels at 0.8nV•s.

Feature Summary

• Octal architecture with 16-bit resolution and rail-to-rail output buffers
• Integrated precision reference with 10ppm/°C max temperature coefficient
• Maximum INL error of ±4LSB and guaranteed monotonic operation
• Ultralow DAC-to-DAC crosstalk of 0.8nV•s typical

Applications

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

Procurement Notes

Verify the component matches the specific B-grade accuracy (±4LSB INL) and L-option full-scale voltage (2.5V). Confirm the QFN package type and tape-and-reel packaging format. Ensure the operating environment falls within the commercial temperature range of 0°C to 70°C as specified for the C-grade variant.

Selection Notes

Select this part for designs requiring multiple low-cost, high-resolution voltage outputs with minimal inter-channel interference. The internal reference simplifies design by eliminating external components, though an external reference can be used to double the full-scale output range. Ensure the system power supply remains within the 2.7V to 5.5V range for proper operation.

Part Context

This component belongs to the LTC2657 family of octal DACs, which also includes 12-bit variants and H-options with higher full-scale voltages. The 'B' suffix denotes the ±4LSB INL grade, while 'L' indicates the 2.5V full-scale output derived from the internal 1.25V reference. The 'UFD' suffix specifies the 20-lead QFN package, and '#TRPBF' indicates lead-free tape-and-reel packaging.

Replacement Considerations

Direct replacements within the same family include LTC2657BIUFD-L16#TRPBF for industrial temperature range (-40°C to 85°C) or LTC2657CUFD-L16#TRPBF for lower accuracy (±1LSB INL). For 12-bit resolution requirements, consider LTC2657CUFD-L12#TRPBF.