LTC2633ACTS8-LI12#TRPBF

Overview

The LTC2633ACTS8-LI12#TRPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in an 8-lead TSOT-23 package. It features an integrated precision reference providing a 2.5V full-scale output with a temperature coefficient of 10ppm/°C. The device operates on a single 2.7V to 5.5V supply and communicates via 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 ±1.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the –40°C to 125°C temperature range. Supply current is typically 0.4mA at 3V.

Feature Summary

• Dual 12-bit resolution with ±1.5 LSB maximum INL error
• Integrated 2.5V precision reference with 10ppm/°C drift
• Rail-to-rail output buffers with guaranteed monotonicity
• 2-wire I²C interface with selectable power-on reset states

Applications

• Mobile communications
• Process control and industrial automation
• Power supply margining
• Portable equipment
• Automotive systems

Procurement Notes

Verify the specific ordering suffix #TRPBF corresponds to the 2,500-piece tape and reel packaging format as defined in the manufacturer's documentation. Confirm that the 'A' grade designation matches the required ±1.5 LSB INL specification for the application. Ensure the 'I' power-on reset code aligns with system initialization requirements for mid-scale output upon power-up.

Selection Notes

Select this component when a compact dual-channel DAC with high accuracy is required in an 8-lead package. The LTC2633-L variant supports operation from 2.7V, making it suitable for battery-powered applications where the LTC2633-H (requiring 4.5V minimum) would not function. Verify that the I²C address configuration via the CA0 pin does not conflict with other devices on the bus.

Part Context

This part belongs to the LTC2633 family of dual DACs, which also includes variants with different resolutions (8-bit, 10-bit), higher accuracy grades, and alternative power-on reset behaviors. The 'ACTS8' designation indicates the commercial temperature grade (0°C to 70°C) and TSOT-23 package, while 'LI12' specifies the 2.5V internal reference, mid-scale reset, and 12-bit resolution.

Replacement Considerations

Direct replacements within the same family include LTC2633ACTS8-LZ12#TRPBF for zero-scale power-on reset or LTC2633ACTS8-HI12#TRPBF if a 4.096V full-scale output is needed with a 4.5V minimum supply. Cross-family alternatives like the LTC2635 offer quad channels but require larger packages.