LTC2656IFE-H12#PBF

Overview

The LTC2656IFE-H12#PBF is an octal 12-bit digital-to-analog converter (DAC) from Analog Devices, 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 4.5V to 5.5V, providing a full-scale output of 4.096V. Communication is handled via a 4-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. Key specifications include guaranteed monotonicity, ultralow DAC-to-DAC crosstalk (<3nV•s), and a power-on reset circuit configurable for zero-scale or mid-scale initialization.

Feature Summary

• Octal 12-bit resolution with rail-to-rail output buffers
• Integrated precision reference yielding 4.096V full-scale output
• SPI/MICROWIRE compatible 4-wire serial interface (up to 50MHz)
• Guaranteed monotonic operation over the operating temperature range

Applications

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

Procurement Notes

Verify that the component matches the specified 20-lead Thermally Enhanced TSSOP package and industrial temperature grade (-40°C to 85°C). Confirm the presence of the '#PBF' lead-free designation and ensure the internal reference configuration aligns with the required 4.096V full-scale output specification for the '-H' variant.

Selection Notes

Select this part when eight independent 12-bit channels are required within a compact footprint. The -H suffix indicates compatibility with 4.5V to 5.5V supplies and a 4.096V output span. Ensure the application utilizes a 4-wire SPI interface and requires rail-to-rail output swing without external buffering components.

Part Context

This component belongs to the LTC2656 family of octal DACs, which also includes 16-bit variants and options with different full-scale voltages. The 'I' designation specifies the industrial temperature range, while 'FE' denotes the specific 20-lead thermally enhanced TSSOP package type used in this ordering code.

Replacement Considerations

Direct substitutes within the same package and pinout include other LTC2656 variants such as the LTC2656IUFD-H12#PBF (QFN package) or the LTC2656BIFE-H12#PBF (higher accuracy grade). Verify package dimensions and thermal pad requirements when swapping between TSSOP and QFN footprints.