LTC2633ACTS8-LI12#TRMPBF

Overview

The LTC2633ACTS8-LI12#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 with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V 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, a supply current of 0.4mA at 3V, and rail-to-rail output buffers that are guaranteed monotonic over the –40°C to 125°C temperature range.

Feature Summary

• Dual 12-bit DACs with integrated 2.5V precision reference (10ppm/°C drift)
• Maximum INL error of ±1.5 LSB for high accuracy
• Rail-to-rail output buffers guaranteed monotonic from –40°C to 125°C
• Low power consumption: 0.4mA typical supply current at 3V

Applications

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

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 'A' grade designation ensures the specified ±1.5 LSB maximum INL performance. Ensure the ordering code matches the specific power-on reset behavior defined by the 'I' suffix for mid-scale initialization in internal reference mode.

Selection Notes

Select this part when a compact 8-lead TSOT-23 footprint is required for dual-channel signal generation. The 'L' variant is appropriate for systems requiring a 2.5V full-scale output with a 2.7V minimum supply voltage. Choose the 'A' grade if strict linearity constraints (±1.5 LSB INL) are necessary compared to the standard ±2.5 LSB grade. Verify that the I²C address configuration via the CA0 pin aligns with the system bus topology.

Part Context

This component belongs to the LTC2633 family of dual DACs, which also includes variants with 10-bit and 8-bit resolutions, as well as different full-scale voltage options like the 4.096V 'H' grade. The 'ACTS8' designation specifies the commercial/high-temp grade, TSOT-23 package, and 12-bit resolution. The '#TRMPBF' suffix denotes lead-free construction and the specific 500-piece tape and reel shipping format.

Replacement Considerations

Direct substitutes within the same family include the LTC2633ACTS8-LI12#TR (2,500-unit reel) or the LTC2633ACTS8-HI12#TRMPBF for a 4.096V full-scale output. For higher resolution requirements, consider the LTC2634 quad-channel variant, though it requires a larger package.