LTC2656CFE-L12#PBF

Overview

The LTC2656CFE-L12#PBF is an octal 12-bit digital-to-analog converter (DAC) from Analog Devices Inc., housed in a 20-lead thermally enhanced TSSOP package. It features rail-to-rail output buffers and a precision integrated reference with a maximum temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V, providing a full-scale output span of 0V to 2.5V. Communication is handled via a 4-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. The component guarantees monotonicity over the operating temperature range.

Feature Summary

• Octal architecture with 8 independent 12-bit DAC channels
• Integrated precision reference with ±10ppm/°C max temperature coefficient
• Rail-to-rail output buffers with guaranteed monotonicity
• SPI/MICROWIRE compatible 4-wire serial interface with 50MHz clock rate

Applications

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

Procurement Notes

Verify the specific ordering suffix CFE indicates the 20-lead Thermally Enhanced TSSOP package and L12 denotes the 12-bit resolution with 2.5V internal reference. Confirm the C grade corresponds to the commercial temperature range of 0°C to 70°C. Ensure the PBF suffix confirms lead-free compliance for procurement specifications.

Selection Notes

Select this part when eight isolated analog outputs are required within a compact footprint. The 12-bit resolution offers a balance between cost and performance for applications not requiring 16-bit precision. The integrated reference simplifies design by eliminating external components, while the wide supply voltage range supports various system power architectures.

Part Context

This component belongs to the LTC2656 family of octal DACs. Variants exist with different resolutions (12-bit or 16-bit), accuracy grades (B or C), and full-scale voltages determined by the internal reference (L option for 2.5V or H option for 4.096V). The CFE package variant specifically utilizes the thermally enhanced TSSOP form factor.

Replacement Considerations

Direct replacements within the same family include LTC2656CUFD-L12#PBF for QFN packaging or LTC2656IFE-L12#PBF for industrial temperature ranges. Verify pin compatibility and electrical specifications before substitution.