LTC2657BCFE-H16#TRPBF

Overview

The LTC2657BCFE-H16#TRPBF is an octal 16-bit digital-to-analog converter featuring a 10ppm/°C maximum integrated reference. It operates on a single 4.5V to 5.5V supply with a full-scale output of 4.096V. The device utilizes a 2-wire I²C interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include ±4LSB maximum integral nonlinearity, ±0.3LSB differential nonlinearity, and a settling time of 9.1µs for 16-bit accuracy. It incorporates rail-to-rail output buffers, power-on reset options, and ultralow crosstalk.

Feature Summary

• Octal architecture with 16-bit resolution and ±4LSB max INL
• Integrated precision reference yielding 4.096V full-scale output
• I²C compatible serial interface with 400kHz clock rate
• Rail-to-rail output buffers with ultralow DAC-to-DAC crosstalk

Applications

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

Procurement Notes

Verify the specific suffix 'FE' corresponds to the 20-lead thermally enhanced TSSOP package as defined in the product selector guide. Confirm the 'H' designation indicates the 4.5V to 5.5V supply range and 4.096V internal reference mode. Ensure the 'B' grade matches the required ±4LSB INL specification for the target application.

Selection Notes

Select this component when eight independent voltage outputs are required within a compact footprint. The H-option is necessary if the system requires a 4.096V full-scale range; otherwise, the L-option provides a 2.5V range with a wider supply voltage flexibility starting at 2.7V. Verify that the I²C bus speed requirements align with the 400kHz fast mode capability.

Part Context

This part belongs to the LTC2657 family of octal DACs. The BC prefix denotes the commercial temperature grade (0°C to 70°C) and B-grade linearity. The FE suffix identifies the 20-lead thermally enhanced TSSOP package. The H16 suffix specifies the 16-bit resolution and 4.096V full-scale output configuration derived from the internal 2.048V reference.

Replacement Considerations

Public confirmed substitute part numbers: LTC2657BIUFD-H16#TRPBF (Industrial grade, QFN package), LTC2657BCUFD-H16#TRPBF (Commercial grade, QFN package). These variants share identical electrical characteristics but differ in operating temperature range or physical package dimensions.