LTC2657BCFE-L16#TRPBF

Overview

The LTC2657BCFE-L16#TRPBF is an octal 16-bit digital-to-analog converter featuring a 2-wire I²C serial interface. It integrates a precision reference with a maximum temperature coefficient of 10ppm/°C, providing a full-scale output of 2.5V. The device operates on a single supply voltage ranging from 2.7V to 5.5V and includes built-in rail-to-rail output buffers. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±4 LSB, guaranteed monotonicity over the operating temperature range, and a typical settling time of 9.1 µs for 16-bit accuracy.

Feature Summary

• Octal architecture with eight independent 16-bit DAC channels
• Integrated 1.25V reference with 10ppm/°C max temperature coefficient
• I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes
• Rail-to-rail output capability with ultralow crosstalk (0.8nV•s)
• Configurable power-on reset to zero-scale or mid-scale via PORSEL pin

Applications

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

Procurement Notes

Verify that the component matches the specified 20-lead thermally enhanced TSSOP package and commercial temperature grade (0°C to 70°C). Confirm the presence of the 'B' electrical grade designation indicating ±4LSB maximum INL. Ensure the '#TRPBF' suffix corresponds to tape and reel packaging suitable for automated assembly processes.

Selection Notes

Select this part when multiple low-channel-count DACs are required in a compact footprint. The integrated reference eliminates external components, reducing board space. Verify that the 2.5V full-scale output aligns with system requirements; if higher voltage swings are needed, consider the -H option which supports up to 4.096V with a 4.5V minimum supply.

Part Context

This component belongs to the LTC2657 family of octal DACs. Variants exist with different resolutions (12-bit), accuracy grades ('C' vs 'B'), and full-scale voltages (-L vs -H options). The FE suffix denotes the 20-lead thermally enhanced TSSOP package, while UFD denotes the QFN package. The L16 suffix specifies the 16-bit resolution variant.

Replacement Considerations

Direct replacements within the same package and specification include LTC2657BCFE-L16#PBF (tube packaging) or LTC2657BIUFD-L16#TRPBF (industrial grade, QFN package). Cross-package substitutions require schematic review due to pinout differences between TSSOP and QFN.