LTC2656BIFE-H16#TRPBF

Overview

The LTC2656BIFE-H16#TRPBF is an octal 16-bit digital-to-analog converter (DAC) from Analog Devices, housed in a 20-lead thermally enhanced TSSOP package. It features a precision integrated reference with a maximum temperature coefficient of 10ppm/°C and a full-scale output voltage of 4.096V. The device operates on a single 4.5V to 5.5V supply and includes high-performance rail-to-rail output buffers guaranteed monotonic over temperature. 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 and ultralow crosstalk between channels.

Feature Summary

• Octal 16-bit resolution with ±4LSB maximum INL error
• Integrated precision reference providing 4.096V full-scale output
• Rail-to-rail output buffers with guaranteed monotonicity
• 4-wire SPI/MICROWIRE compatible serial interface

Applications

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

Procurement Notes

Verify the ordering suffix #TRPBF confirms tape and reel packaging and lead-free construction. Confirm the FE package designation matches the required 20-lead thermally enhanced TSSOP form factor. Ensure the H16 suffix aligns with the 4.096V full-scale voltage requirement and 4.5V minimum supply voltage constraints for the specific application design.

Selection Notes

Select this component when eight independent 16-bit voltage outputs are required within a compact footprint. The H-option internal reference sets the full-scale range to 4.096V, necessitating a supply voltage between 4.5V and 5.5V. For applications requiring lower supply voltages or different full-scale ranges, consider the L-option variants which support 2.7V to 5.5V supplies and provide a 2.5V full-scale output.

Part Context

This part belongs to the LTC2656 family of octal DACs, which also includes 12-bit versions and QFN package options. The B-grade designation indicates tighter linearity specifications compared to the C-grade parts. The device shares functional similarities with other Analog Devices DAC families but is distinct in its combination of octal channel count, integrated reference accuracy, and specific package thermal characteristics.

Replacement Considerations

Direct pin-compatible replacements within the same package include other LTC2656 variants such as LTC2656BCFE-H16#TRPBF or LTC2656BIUFD-H16#TRPBF, depending on required temperature grade and package type. Cross-family replacements may require schematic redesign due to differences in interface protocols, pinouts, or power requirements.