LTC2656BIFE-L16#PBF

Overview

The LTC2656BIFE-L16#PBF is an octal, 16-bit voltage-output digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It features a precision integrated reference with a maximum temperature coefficient of 10ppm/°C and operates from a single 2.7V to 5.5V supply. The device provides rail-to-rail output buffers and guarantees monotonicity over the operating temperature range. It communicates 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 full-scale transitions, and a typical glitch impulse of 3nV•s.

Feature Summary

• Octal architecture with eight independent 16-bit DAC channels in a single package
• Precision internal reference with 10ppm/°C max temperature coefficient and 2.5V full-scale output
• Rail-to-rail output buffers with ultralow crosstalk (<1nV•s) between channels
• Guaranteed monotonic operation over the specified temperature range

Applications

• Mobile communications systems
• Process control and industrial automation
• Instrumentation and measurement equipment
• Automatic test equipment (ATE)
• Automotive electronic systems

Procurement Notes

Verify the specific ordering suffixes against the manufacturer's official documentation to ensure correct package type, temperature grade, and lead finish. Confirm that the B-grade INL specification matches the design requirements. Check for RoHS compliance status as indicated in the product selection guide. Ensure the procurement channel sources genuine components to avoid counterfeit risks associated with high-precision analog devices.

Selection Notes

Select the LTC2656BIFE-L16#PBF when an octal configuration with 16-bit resolution and ±4LSB maximum INL is required. This part is suitable for applications needing a 2.5V full-scale output range powered by a 2.7V to 5.5V supply. Consider the TSSOP-EP package for thermal performance if higher power dissipation is expected. Verify compatibility with the system's SPI clock speed and logic voltage levels before integration.

Part Context

This component belongs to the LTC2656 family of octal DACs, which also includes 12-bit variants and H-grade options with 4.096V full-scale outputs. The 'B' designation indicates the highest accuracy grade within the 16-bit L-option line, ensuring tighter linearity specifications compared to the C-grade parts. The 'FE' suffix denotes the 20-lead thermally enhanced TSSOP package, distinguishing it from the QFN UFD variant.

Replacement Considerations

Direct replacements within the same family include LTC2656BCFE-L16#PBF for commercial temperature range or LTC2656BIUFD-L16#PBF for QFN packaging. Cross-family replacement with LTC2657 requires interface adaptation due to I2C communication differences.