LTC2631HTS8-HZ8#TRMPBF

Overview

The LTC2631HTS8-HZ8#TRMPBF is a single-channel, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. 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 ±0.5 LSB, a typical settling time of 4.6µs at ±1/4 LSB accuracy, 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

• Integrated 4.096V precision reference with ±10ppm/°C temperature coefficient
• 8-bit resolution with ±0.5 LSB maximum INL error
• 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 ordering suffix #TRMPBF indicates a 500-unit tape and reel packaging configuration as defined in the manufacturer's documentation. Confirm that the H-grade designation matches the required automotive temperature range of –40°C to 125°C for the target application environment. Ensure the 4.5V minimum supply voltage requirement aligns with the system power architecture.

Selection Notes

Select this component when a compact 8-lead TSOT-23 package is required alongside high accuracy (±0.5 LSB INL) and wide temperature operation. The H-grade variant is necessary for applications exceeding 85°C. Consider the 4.5V–5.5V supply constraint; if lower voltage operation or a 2.5V full-scale output is needed, the L-grade variants should be evaluated instead.

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 (–40°C to 125°C), while 'Z' specifies the power-on reset behavior to zero-scale. The 'TS8' indicates the 8-lead ThinSOT (TSOT-23) plastic package. Other family members include C-grade commercial parts and M-grade mid-scale reset options.

Replacement Considerations

Direct pin-compatible replacements within the same package and interface include other LTC2631 variants such as LTC2631HTS8-LZ8#TRMPBF (if 2.5V FSR is acceptable) or LTC2631ITS8-HZ8#TRMPBF (if industrial temperature range suffices). Cross-family replacements require verification of I²C compatibility and pinout alignment.