LTC2631CTS8-LZ8#TRPBF

Overview

The LTC2631CTS8-LZ8#TRPBF is an 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc., housed in an 8-lead TSOT-23 package. It features a rail-to-rail output buffer and operates on a single supply of 2.7V to 5.5V, delivering a full-scale output of 2.5V with an internal reference. 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 3.2µs at ±1/4 LSB, and a power-down current of 1.8µA maximum. The part includes a power-on reset circuit configured to clear the output to zero-scale upon initialization.

Feature Summary

• 8-Bit Resolution with Rail-to-Rail Output Buffer
• Integrated 2.5V Full-Scale Reference with 10ppm/°C Drift
• I²C Interface Supporting 400kHz Fast Mode
• Power-On Reset to Zero-Scale Output

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Portable Equipment

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a 2,500-piece tape and reel packaging format. Confirm that the 'C' temperature grade designation aligns with the required commercial operating range of 0°C to 70°C for the application environment.

Selection Notes

Select this component when an 8-bit resolution is sufficient for the system requirements. Ensure the supply voltage remains within the 2.7V to 5.5V range suitable for the LTC2631-L series. Verify that the zero-scale power-on reset behavior meets the initial state requirements of the connected load.

Part Context

This part belongs to the LTC2631 family of single-channel DACs, which also offers 10-bit and 12-bit resolutions. Variants are available with different full-scale voltages (2.5V or 4.096V), power-on reset options (zero or mid-scale), and temperature grades (Commercial, Industrial, Automotive).

Replacement Considerations

Direct pin-compatible substitutes within the same family include other LTC2631 variants with different resolutions or reset configurations. Cross-family replacements require verification of I²C compatibility and output drive capabilities.