LTC2631CTS8-LZ12#TRMPBF

Overview

The LTC2631CTS8-LZ12#TRMPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) housed in an 8-lead TSOT-23 package. It features an integrated precision reference yielding a full-scale output of 2.5V with a temperature coefficient of 10ppm/°C. The device operates on a single supply ranging from 2.7V to 5.5V and utilizes a 2-wire I²C-compatible serial interface supporting clock rates up to 400kHz. Key electrical characteristics include a maximum integral nonlinearity error of ±2.5LSB, guaranteed monotonicity over the operating temperature range, and a power-on reset function that defaults the output to zero-scale upon initialization.

Feature Summary

• 12-bit resolution with integrated 2.5V reference and 10ppm/°C drift
• I²C interface with selectable slave addresses via CA0/CA1 pins
• Power-on reset configured for zero-scale output initialization
• Rail-to-rail output buffer with guaranteed monotonic operation

Applications

• Mobile communications systems
• Process control and industrial automation instrumentation
• Portable battery-powered equipment
• Automotive sensing applications

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel quantity as defined in the manufacturer's documentation. Confirm the 'L' designation corresponds to the 2.5V full-scale internal reference variant and the 'Z' designation ensures the zero-scale power-on reset behavior required by the system design specifications.

Selection Notes

Select this component when a 12-bit DAC with a 2.5V span is required within a compact TSOT-23 footprint. Ensure the application supply voltage remains between 2.7V and 5.5V. Verify that the zero-scale power-on reset aligns with safety requirements, as the 'M' suffix variant resets to mid-scale instead. Check if the ±2.5LSB INL specification meets the system accuracy needs.

Part Context

This part belongs to the LTC2631 family of low-power, I²C DACs. Variants differ by resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and power-on reset state (zero or mid-scale). The LTS8 package denotes the 8-lead ThinSOT form factor, while the LZ suffix specifically configures the internal logic for zero-scale initialization.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided datasheet.