LTC2654CUF-L12#PBF

Overview

The LTC2654CUF-L12#PBF is a quad 12-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices. It features an integrated 10ppm/°C maximum reference, providing a full-scale output of 2.5V. The device operates on a single supply voltage ranging from 2.7V to 5.5V and includes built-in high-performance output buffers guaranteed monotonic over temperature. Communication is handled via a 4-wire SPI/Microwire compatible serial interface supporting clock rates up to 50MHz. It incorporates a power-on reset circuit configurable for zero-scale or mid-scale initialization.

Feature Summary

• Quad 12-bit resolution with integrated 10ppm/°C max reference
• Rail-to-rail output buffers with ultralow crosstalk (<3nV•s)
• SPI/Microwire compatible 4-wire serial interface (up to 50MHz)
• Configurable power-on reset to zero-scale or mid-scale

Applications

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

Procurement Notes

Verify the package type matches the required footprint, as this component uses a 20-lead 4mm × 4mm Plastic QFN. Confirm that the operating temperature range aligns with commercial specifications (0°C to 70°C). Ensure the system design accommodates the 2.7V to 5.5V supply voltage requirements for the -L option.

Selection Notes

Select this part when a quad DAC configuration is needed with high precision and low power consumption. The 12-bit resolution offers a balance between cost and performance for applications not requiring 16-bit accuracy. Consider the external reference mode if a full-scale output different from 2.5V is required, as the external reference voltage sets the span to twice its value.

Part Context

This component belongs to the LTC2654 family, which also includes 16-bit variants and industrial temperature grade options. The 'CUF' suffix indicates the Commercial temperature grade (0°C to 70°C) and the 20-lead QFN package. The 'L12' designation specifies the 12-bit resolution with the 2.5V internal reference full-scale output.

Replacement Considerations

Direct replacements within the same family include the LTC2654IUF-L12#PBF for industrial temperature range (-40°C to 85°C) or the LTC2654BCUF-L12#PBF for higher linearity accuracy (±1 LSB INL vs ±0.5 LSB). For 16-bit resolution, consider the LTC2654BCUF-L16#PBF.