LTC2632CTS8-HZ12#TRPBF

Overview

The LTC2632CTS8-HZ12#TRPBF is a dual 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 a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 4.5V to 5.5V. It utilizes a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. The part includes rail-to-rail output buffers, double-buffered data latches, and a power-on reset circuit configured to clear outputs to zero-scale in internal reference mode upon power-up.

Feature Summary

• Dual 12-bit resolution with maximum integral nonlinearity error of ±2.5LSB
• Integrated 4.096V full-scale reference with ±10ppm/°C drift
• Power-on reset to zero-scale for consistent system initialization
• 3-wire serial interface supporting clock frequencies up to 50MHz

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment

Procurement Notes

Verify the specific ordering suffix #TRMPBF availability if a 500-unit tape and reel quantity is required instead of the standard 2,500-unit reel indicated by #TRPBF. Confirm that the automotive temperature grade H (-40°C to 125°C) matches the application environment requirements. Ensure the 4.5V minimum supply voltage constraint is met by the system power rails.

Selection Notes

Select this model over the LTC2632-L series when a higher full-scale output voltage of 4.096V is necessary, as the L-series is limited to 2.5V. Choose the H-grade variant specifically for applications requiring operation in temperatures down to -40°C. The Z-suffix ensures the DAC outputs initialize to zero volts upon power-up, which is critical for protecting downstream circuits sensitive to initial voltage states.

Part Context

This component belongs to the LTC2632 family of dual voltage-output DACs housed in an 8-lead TSOT-23 package. The family offers various combinations of resolution (8, 10, or 12 bits), accuracy grades, and power-on reset behaviors. The HZ12 designation specifically identifies the 12-bit automotive grade version with zero-scale reset and 4.096V internal reference capability.

Replacement Considerations

Direct functional substitutes within the same package include other LTC2632 variants such as LTC2632ACTS8-HI12#TRMPBF, differing primarily in the power-on reset behavior (mid-scale vs. zero-scale). Cross-family replacements like the LTC2641 offer similar SPI interfaces but differ in package type and channel count.