LTC2631AITS8-LM12#TRPBF

Overview

The LTC2631AITS8-LM12#TRPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated precision reference with a full-scale output of 2.5V and operates on a single supply voltage ranging from 2.7V to 5.5V. The device utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical characteristics include a maximum Integral Nonlinearity (INL) error of ±1 LSB, a typical settling time of 4.1µs at 3V, and guaranteed monotonicity over the operating temperature range. The part is housed in an 8-lead TSOT-23 package.

Feature Summary

• 12-bit resolution with ±1 LSB maximum INL error
• Integrated 2.5V full-scale reference with 10ppm/°C drift
• I²C interface with 400kHz clock rate support
• Power-on reset to mid-scale option
• Rail-to-rail buffered output

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems
• Optical networking

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a 2,500-piece tape and reel packaging configuration. Confirm that the 'I' temperature grade matches the required operational range of –40°C to 85°C for the target application environment. Ensure the 'M' power-on reset setting aligns with system initialization requirements.

Selection Notes

Select this component when a 12-bit DAC with high accuracy (±1 LSB INL) and low power consumption is required in a compact TSOT-23 package. The internal 2.5V reference simplifies design by eliminating external reference components. Choose this variant over the 'H' grade if the application requires operation below 4.5V supply voltage.

Part Context

This part belongs to the LTC2631 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The 'A' designation specifies the highest accuracy grade within the family. Other variants differ by resolution, full-scale voltage (2.5V or 4.096V), temperature grade (C, I, H), and power-on reset behavior (Zero or Mid-Scale).

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2631AITS8-LZ12#TRPBF (Zero-scale reset) or LTC2631AITS8-HM12#TRPBF (4.096V full-scale, higher voltage requirement). Verify supply voltage constraints before substituting with H-grade parts.