LTC2634HUD-HZ12#PBF

Overview

The LTC2634HUD-HZ12#PBF is a quad 12-bit voltage output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers, double-buffered data latches, and an SPI/Microwire compatible 3-wire serial interface. It is qualified for automotive applications under AEC-Q100 standards and guarantees monotonicity over the -40°C to 125°C temperature range. Power-on reset defaults to zero-scale in internal reference mode.

Feature Summary

• Quad 12-bit resolution with ±2.5 LSB maximum integral nonlinearity error
• Integrated 4.096V full-scale reference with 10ppm/°C drift
• AEC-Q100 qualified for automotive reliability requirements
• Power-on reset to zero-scale in internal reference mode

Applications

• Automotive systems requiring high-reliability signal generation
• Process control and industrial automation equipment
• Automatic test equipment
• Portable battery-powered instrumentation

Procurement Notes

Verify the specific suffix HZ12 corresponds to the 4.096V full-scale, zero-scale power-on reset configuration. Confirm the HUD package designation matches the required 16-lead QFN form factor. Ensure the #PBF suffix indicates lead-free compliance for the target assembly process.

Selection Notes

Select this part when a 4.096V output span is required with strict automotive qualification. The H-grade supports operation up to 125°C. Verify that the 4.5V minimum supply voltage aligns with the system power rails. Consider the Z-suffix behavior if zero-state initialization upon power-up is critical for downstream circuit safety.

Part Context

This component belongs to the LTC2634 family of quad DACs. Variants differ by resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and power-on reset behavior (zero-scale or mid-scale). The H-series specifically denotes the 4.096V internal reference option.

Replacement Considerations

Direct substitutes within the same family include LTC2634HUD-HZ10#PBF (10-bit) and LTC2634HUD-HZ8#PBF (8-bit) for lower resolution needs. For mid-scale reset variants, consider LTC2634HUD-HMI12#PBF.