LTC2654IUF-H12#TRPBF

Overview

The LTC2654IUF-H12#TRPBF is a quad 12-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices Inc., housed in a 20-lead 4mm × 4mm QFN package. It features an integrated reference with a maximum temperature coefficient of 10ppm/°C, providing a full-scale output of 4.096V. The device operates on a single supply voltage ranging from 4.5V to 5.5V and communicates via a 4-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. Key electrical characteristics include a maximum integral nonlinearity (INL) error of ±1LSB, guaranteed monotonicity over the operating temperature range, and low offset error.

Feature Summary

• Quad 12-bit resolution with integrated 10ppm/°C max reference
• Rail-to-rail output buffers with 4.096V full-scale range
• SPI/MICROWIRE compatible 4-wire serial interface
• Power-on reset configurable to zero-scale or mid-scale

Applications

• Mobile communications
• Process control and industrial automation
• Instrumentation
• Automatic test equipment
• Automotive systems

Procurement Notes

Verify the specific ordering suffix '#TRPBF' indicates tape and reel packaging and lead-free construction. Confirm the 'H' designation matches the required 4.5V to 5.5V supply range and 4.096V full-scale output. Ensure the 'I' grade meets the -40°C to 85°C industrial temperature requirement for the target application environment.

Selection Notes

Select this component when a quad DAC configuration is required with high precision and low crosstalk. The -H variant is necessary for applications demanding a 4.096V output span, whereas the -L variant provides 2.5V. Consider the external reference mode if a different full-scale voltage is needed, as the DAC supports an external reference input up to VCC/2.

Part Context

This part belongs to the LTC2654 family of precision DACs, which also includes 16-bit variants (LTC2654-L16/H16) and commercial temperature grade options (LTC2654-C). The IUF package denotes the 20-lead QFN form factor. Other family members share similar interface protocols and architectural features but differ in resolution, full-scale voltage, and operating temperature ranges.

Replacement Considerations

Direct pin-compatible replacements within the same package include other LTC2654 variants such as LTC2654IUF-L12#TRPBF for lower voltage requirements or LTC2654BIUF-H12#TRPBF for tighter linearity specifications. Cross-family replacements require verification of interface compatibility and pinout alignment.