LTC2631ITS8-HZ10#TRMPBF

Overview

The LTC2631ITS8-HZ10#TRMPBF is a single-channel, 10-bit voltage-output digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It integrates a precision reference with a temperature coefficient of 10ppm/°C and operates within a supply voltage range of 4.5V to 5.5V. The device features a rail-to-rail output buffer that is guaranteed monotonic over the operating temperature range. It utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum Integral Nonlinearity (INL) error of ±1 LSB and a typical settling time of 4.2µs at 5V. The component is housed in an 8-lead TSOT-23 package.

Feature Summary

• 10-bit resolution with ±1 LSB maximum INL error
• Integrated 10ppm/°C reference providing 4.096V full-scale output
• I²C interface with nine selectable addresses via CA0 and CA1 pins
• Power-on reset circuit configured to clear output to zero-scale

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 ordering suffix #TRMPBF indicates a 500-unit tape and reel packaging configuration as defined in the manufacturer's documentation. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure the Z suffix is correctly interpreted as the power-on reset to zero-scale option. Cross-reference the ITS8 package code with the official 8-lead plastic TSOT-23 mechanical drawings for footprint compatibility.

Selection Notes

Select this part when a 10-bit resolution is sufficient for the application, offering a balance between performance and cost compared to the 12-bit variant. The H-grade is required if operation above 85°C up to 125°C is necessary. The Z suffix ensures the DAC output initializes to zero upon power-up, which may be critical for safety or system initialization sequences. Verify that the 4.5V minimum supply voltage aligns with the system's available power rails.

Part Context

This component belongs to the LTC2631 family of single-channel voltage-output DACs. The family includes 12-bit, 10-bit, and 8-bit variants with different full-scale voltages (2.5V or 4.096V) and power-on reset options. The LTS8 package denotes the 8-lead ThinSOT form factor. Other family members include the LTC2631A series for higher accuracy and the LTC2631-L series for lower supply voltage operation starting at 2.7V.

Replacement Considerations

Direct pin-for-pin replacements within the same package include other LTC2631 variants such as the LTC2631ITS8-HM10#TRMPBF, which differs only in the power-on reset behavior (mid-scale vs. zero-scale). For applications requiring 12-bit resolution, the LTC2631ITS8-HZ12#TRMPBF is compatible. Lower resolution options like the LTC2631ITS8-HZ8#TRMPBF are also interchangeable if 8-bit precision is acceptable.