LTC2633ACTS8-LO12#TRMPBF

Overview

The LTC2633ACTS8-LO12#TRMPBF 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 and operates on a single 2.7V to 5.5V supply. The device 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) of ±1.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the –40°C to 125°C temperature range. Power-on reset is configured to place DAC outputs in a high-impedance state.

Feature Summary

• Dual 12-bit resolution with ±1.5 LSB maximum INL error
• Integrated 2.5V full-scale reference with 10ppm/°C drift
• Power-on reset to High-Impedance state for safe initialization
• Rail-to-rail output buffers with 2.7V to 5.5V supply range

Applications

• Mobile communications systems
• Process control and industrial automation
• Portable equipment requiring low power consumption
• Automotive electronics
• Power supply margining

Procurement Notes

Verify the #TRMPBF suffix indicates a 500-unit tape and reel packaging configuration, distinct from the standard 2,500-unit reel. Confirm the LO12 code corresponds to the specific 2.5V full-scale voltage and high-impedance power-on reset behavior defined in the selection guide. Ensure compatibility with the 8-lead TSOT-23 footprint during procurement planning.

Selection Notes

Select this part when a 2.5V internal reference and high-impedance power-up state are required. The 'A' grade ensures tighter linearity performance (±1.5 LSB) compared to standard grades. Verify that the system supply voltage remains within the 2.7V to 5.5V range for specified performance. Consider the 8-lead TSOT-23 package constraints for thermal management and PCB layout.

Part Context

This component belongs to the LTC2633 family of dual I²C DACs. The ACTS8 designation specifies the Automotive temperature grade (-40°C to 125°C), TSOT-23 package, and A-grade accuracy. The LO12 suffix defines the 12-bit resolution, 2.5V internal reference mode, and high-impedance power-on reset option. It is part of a broader series offering various resolutions and reset configurations.

Replacement Considerations

Direct replacements within the same family include LTC2633ACTS8-LI12#TRMPBF (mid-scale reset) or LTC2633ACTS8-LZ12#TRMPBF (zero-scale reset). For external reference applications, consider the H-grade variants if higher supply voltages are available. Ensure any substitute maintains the 12-bit resolution and I²C interface compatibility.