LTC2655BCUF-L16#TRPBF

Overview

The LTC2655BCUF-L16#TRPBF is a quad 16-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices, housed in a 20-lead 4mm × 4mm QFN package. It features an integrated 1.25V reference yielding a 2.5V full-scale output and operates on a single 2.7V to 5.5V supply. The device supports I2C interfaces up to 400kHz and guarantees monotonicity with a maximum integral nonlinearity of ±4 LSB. Key electrical parameters include a settling time of 9.1µs for 16-bit accuracy, a supply current of 1.7mA, and ultralow crosstalk below 1nV•s.

Feature Summary

• Quad 16-bit resolution with ±4 LSB maximum INL error
• Integrated 1.25V reference providing 2.5V full-scale output
• Rail-to-rail buffered outputs guaranteed monotonic over temperature
• I2C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging when sourcing this component. Confirm that the 'B' grade designation aligns with project requirements for ±4 LSB maximum INL performance. Ensure the commercial temperature range (0°C to 70°C) meets the operational environment specifications before procurement.

Selection Notes

Select this part for designs requiring four independent 16-bit voltage outputs with minimal external components. The -L suffix indicates a fixed 2.5V internal reference; use -H variants if a 4.096V span is needed. Consider the QFN package thermal characteristics and ensure adequate PCB ground plane connection to the exposed pad for optimal heat dissipation and signal integrity.

Part Context

This component belongs to the LTC2655 family of quad DACs, which also includes 12-bit variants and different package options like the 16-lead SSOP. The BCUF-L16 designation specifically identifies the B-grade accuracy, UF QFN package, L-series 2.5V reference, and 16-bit resolution configuration within the broader product line.

Replacement Considerations

Direct pin-compatible substitutes within the same family include LTC2655BIUF-L16#TRPBF for industrial temperature ranges or LTC2655CGUF-L16#TRPBF for lower accuracy requirements. Verify that any replacement maintains the required I2C addressability and power-on reset behavior.