LTC2634IUD-HZ10#PBF

Overview

The LTC2634IUD-HZ10#PBF is a quad 10-bit voltage output digital-to-analog converter (DAC) from Analog Devices, housed in a 16-lead 3mm × 3mm QFN package. It features an integrated precision reference providing 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, guaranteed monotonicity over the –40°C to 85°C industrial temperature range, and a power-on reset circuit that clears outputs to zero-scale. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz.

Feature Summary

• Quad 10-bit DACs with integrated 4.096V precision reference (±10ppm/°C drift)
• Rail-to-rail buffered outputs with ultralow crosstalk (2.4nV•s typical)
• Power-on reset to zero-scale for consistent system initialization
• Industrial temperature grade (-40°C to 85°C) in compact 16-lead QFN package

Applications

• Process control and industrial automation systems
• Portable battery-powered equipment
• Automotive electronics applications
• Automatic test equipment

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and standard packaging. Confirm the 'I' designation matches the required -40°C to 85°C operating range for your application environment. Ensure the 4.5V minimum supply voltage aligns with your system's power rails, as this variant does not support operation below 4.5V.

Selection Notes

Select this part when a quad configuration with high DC accuracy and low noise is required. The H-grade internal reference sets the full-scale voltage to 4.096V, necessitating a supply voltage between 4.5V and 5.5V. Choose the I-temperature grade for industrial environments; use C-grade for commercial (0°C to 70°C) or H-grade for automotive (-40°C to 125°C) if wider ranges are needed.

Part Context

This component belongs to the LTC2634 family, which offers 8-, 10-, and 12-bit resolutions in both QFN and MSOP packages. The 'H' suffix denotes the 4.096V full-scale internal reference option, while 'Z' specifies the zero-scale power-on reset behavior. The 'UD' package code identifies the 16-lead QFN form factor, distinguishing it from the 10-lead MSOP alternative.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2634IUD-LZ10#PBF (mid-scale reset) or LTC2634IUD-HZ12#PBF (12-bit resolution). For external reference designs, consider the LTC2634IUD-HMX10#PBF variant. Verify thermal performance and supply voltage compatibility when substituting.