LTC2657BIUFD-H16#TRPBF

Overview

The LTC2657BIUFD-H16#TRPBF is an octal, 16-bit digital-to-analog converter featuring a high-precision integrated reference with a maximum temperature coefficient of 10ppm/°C. It operates within a supply voltage range of 4.5V to 5.5V and provides a full-scale output of 4.096V. The device incorporates rail-to-rail output buffers and guarantees monotonicity over the operating temperature range. Communication is handled via a 2-wire I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity error of ±4LSB, a settling time of 9.1µs for 16-bit accuracy, and a typical DAC-to-DAC crosstalk of 0.8nV•s.

Feature Summary

• Octal architecture with 16-bit resolution and integrated 10ppm/°C reference
• Rail-to-rail output buffers with guaranteed monotonicity
• I²C serial interface supporting up to 400kHz clock rates
• Power-on reset configurable to zero-scale or mid-scale

Applications

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

Procurement Notes

Verify that the component matches the specific H-option designation, which requires a minimum supply voltage of 4.5V, unlike the L-option. Confirm the package type is the 20-lead QFN and ensure the tape and reel packaging aligns with automated assembly requirements. Cross-reference the manufacturer's documentation for lead-free finish compliance and RoHS status.

Selection Notes

Select this part when multiple isolated analog outputs are required in a compact footprint. The H-option is suitable for designs requiring a 4.096V full-scale range powered by 4.5V to 5.5V rails. Consider the external reference mode if a different full-scale voltage is needed, as the output span can be set to twice the external reference voltage. Ensure the I²C bus speed does not exceed 400kHz.

Part Context

This component belongs to the LTC2657 family of octal DACs. The 'H' suffix indicates the 4.096V full-scale variant with an internal reference of 2.048V, distinct from the 'L' variant which offers 2.5V full-scale. The 'UFD' suffix denotes the 20-lead plastic QFN package, while '#TRPBF' specifies the tape and reel packaging with lead-free finish.

Replacement Considerations

Direct replacements within the same family include LTC2657BCUFD-H16#TRPBF for commercial temperature grade or LTC2657BIUFD-L16#TRPBF for the lower voltage option. Other packages such as the TSSOP (FE suffix) offer pin-compatible alternatives.