LTC2656BCFE-L16#TRPBF

Overview

The LTC2656BCFE-L16#TRPBF is an octal, 16-bit rail-to-rail digital-to-analog converter (DAC) family member manufactured by Analog Devices Inc. It features a precision integrated reference with a maximum temperature coefficient of 10ppm/°C and guarantees monotonicity over the operating temperature range. The device operates on a single supply voltage ranging from 2.7V to 5.5V, providing a full-scale output of 2.5V when using the internal reference. Communication is handled via a 4-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±4LSB at 16 bits, a settling time of 8.9µs for 16-bit accuracy, and ultralow crosstalk between channels.

Feature Summary

• Octal configuration with eight independent 16-bit DAC channels in a single package
• Precision integrated reference with ±10ppm/°C maximum temperature coefficient
• Rail-to-rail output buffers with guaranteed monotonicity over temperature
• 4-wire SPI/MICROWIRE compatible serial interface with 50MHz clock rate

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Instrumentation
• Automatic Test Equipment
• Automotive Systems

Procurement Notes

Verify that the specific ordering suffix matches the required package type and tape-and-reel quantity. Confirm the temperature grade and electrical accuracy class align with system requirements before procurement. Ensure the supplier provides valid traceability documentation for the lead-free finish designation.

Selection Notes

Select this part for applications requiring multiple high-precision voltage outputs with minimal inter-channel interference. The -L option specifies a 2.5V full-scale output suitable for 2.7V to 5.5V supply systems. Consider the external reference mode if a different full-scale voltage is needed, as the output span becomes two times the external reference voltage.

Part Context

This component belongs to the LTC2656 family of octal DACs, which also includes variants with different resolutions (12-bit), accuracy grades (±12LSB INL), and package types such as QFN. The B-grade designation indicates tighter linearity specifications compared to the C-grade parts within the same series.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2656CCFE-L16#TRPBF for lower accuracy requirements or LTC2656BIUFD-L16#TRPBF for a QFN package alternative. Verify that any substitute maintains the required 16-bit resolution and ±4LSB INL specification.