LTC2631ITS8-HZ12#TRMPBF

Overview

The LTC2631ITS8-HZ12#TRMPBF is a single-channel, 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 within a supply voltage range of 4.5V to 5.5V. The device utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key specifications include a maximum integral nonlinearity (INL) error of ±2.5 LSBs, a typical settling time of 4.6µs at ±1/2 LSB, and guaranteed monotonicity over the operating temperature range of –40°C to 125°C. The part incorporates a power-on reset circuit configured to clear the output to zero-scale upon initialization.

Feature Summary

• 12-bit resolution with ±2.5 LSB maximum INL error
• Integrated 4.096V reference with 10ppm/°C temperature coefficient
• I²C interface with selectable slave addresses via CA0/CA1 pins
• Power-on reset to zero-scale for consistent system initialization

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics
• Optical networking devices

Procurement Notes

Verify the specific suffix #TRMPBF indicates a 500-unit tape and reel packaging configuration as defined in the manufacturer's ordering information. Confirm that the H-grade designation matches the required automotive temperature range of –40°C to 125°C for the intended application environment. Ensure the 4.5V minimum supply voltage requirement aligns with the system power architecture.

Selection Notes

Select this component when a 12-bit resolution and 4.096V full-scale output are required in a compact TSOT-23 package. The H-grade temperature rating is necessary for applications operating between –40°C and 125°C. Choose this part over the L-grade variant if the system supply voltage does not drop below 4.5V, as the L-grade supports lower voltages down to 2.7V but offers a 2.5V full-scale output.

Part Context

This part belongs to the LTC2631 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The 'H' suffix denotes the automotive temperature grade, while 'Z' specifies the power-on reset behavior to zero-scale. The 'M' suffix would indicate a mid-scale reset option. The device shares the same pinout and core architecture across the family, differing primarily in accuracy grades, reset states, and internal reference voltage levels.

Replacement Considerations

Direct replacements within the same family include LTC2631ITS8-HM12#TRMPBF for mid-scale reset or LTC2631ITS8-LZ12#TRMPBF for lower voltage operation. Cross-family alternatives require verification of pin compatibility and electrical parameter alignment.