LTC2633CTS8-LZ8#TRMPBF

Overview

The LTC2633CTS8-LZ8#TRMPBF is a dual 8-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 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 ±0.5 LSB, a supply current of 0.4mA at 3V, and rail-to-rail output buffers. The part is guaranteed monotonic over the commercial temperature range of 0°C to 70°C.

Feature Summary

• Dual 8-bit DACs with integrated 2.5V precision reference (10ppm/°C drift)
• I²C-compatible serial interface with standard and fast mode support
• Rail-to-rail output buffers with ±0.5 LSB maximum INL error
• Power-on reset to zero-scale for consistent system initialization

Applications

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

Procurement Notes

Verify the specific suffix #TRMPBF indicates a 500-unit tape and reel packaging configuration, distinct from the standard 2,500-unit reel. Confirm that the 'C' grade designation aligns with the required commercial operating temperature range of 0°C to 70°C for the target application environment.

Selection Notes

Select this component when a compact dual-channel solution with low power consumption is required. The 8-bit resolution is suitable for applications not demanding high precision, while the integrated 2.5V reference simplifies board design. Ensure the supply voltage remains within the 2.7V to 5.5V range and verify that the I²C bus timing meets the standard or fast mode requirements.

Part Context

This part belongs to the LTC2633 family, which offers various resolutions (8-, 10-, and 12-bit) and accuracy grades (standard and A-grade). The LTS8 package provides a small footprint for space-constrained designs. The LZ8 suffix specifically configures the internal power-on reset logic to drive outputs to zero-scale upon startup.

Replacement Considerations

Direct replacements within the same family include LTC2633CTS8-LI8#TRMPBF (mid-scale reset) or LTC2633CTS8-HZ8#TRMPBF (automotive grade, 4.096V reference). Cross-family alternatives like the LTC2635 offer quad channels but require different packaging.