LTC2656CFE-H12#PBF

Overview

The LTC2656CFE-H12#PBF is an octal, 12-bit rail-to-rail digital-to-analog converter (DAC) family member manufactured by Analog Devices Inc. It features a precision integrated reference with a maximum temperature coefficient of 10ppm/°C and operates within a supply voltage range of 4.5V to 5.5V. The device provides eight independent channels with built-in high-performance output buffers guaranteed monotonic over the full operating temperature range. Communication is handled via a 4-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. The component is housed in a 20-lead thermally enhanced TSSOP package.

Feature Summary

• Octal architecture with 12-bit resolution and rail-to-rail output capability
• Integrated precision reference with ±10ppm/°C maximum temperature coefficient
• Ultralow DAC-to-DAC crosstalk (<1nV•s typical)
• Power-on reset circuit configurable for zero-scale or mid-scale initialization

Applications

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

Procurement Notes

Verify that the specific ordering suffix matches the required package type and lead finish. Confirm the internal reference voltage option corresponds to system requirements, as the H-suffix indicates a 4.096V full-scale output. Ensure the C-grade temperature rating aligns with the intended operational environment before finalizing procurement orders.

Selection Notes

Select this part when eight independent voltage outputs are required in a compact form factor. The H-option is suitable for applications needing a 4.096V full-scale range powered by a 5V supply. Verify that the 4.5V minimum supply voltage meets the system power rails. Consider the C-grade if industrial temperature ranges are not required.

Part Context

This component belongs to the LTC2656 family of octal DACs. Variants differ by resolution (12-bit vs 16-bit), accuracy grade (B vs C), and internal reference voltage (L-option for 2.5V vs H-option for 4.096V). The CFE suffix specifically denotes the Commercial temperature grade and Thermally Enhanced TSSOP package.

Replacement Considerations

Direct substitutes include other members of the LTC2656 family such as the LTC2656CUFD-H12#PBF for QFN packaging or the LTC2656IFE-H12#PBF for Industrial temperature grades. Cross-model replacements from different manufacturers require verification of pin compatibility and electrical specifications.