LTC2633HTS8-LX10

Overview

The LTC2633HTS8-LX10 is a dual 10-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 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the –40°C to 125°C temperature range. Upon power-up, the outputs reset to mid-scale when using an external reference.

Feature Summary

• Dual 10-bit DACs with integrated 2.5V precision reference (10ppm/°C drift)
• I²C interface with selectable internal or external reference input
• Rail-to-rail output buffers with ±1 LSB maximum INL error
• Power-on reset to mid-scale in external reference mode

Applications

• Mobile communications systems
• Process control and industrial automation
• Portable equipment requiring low power consumption

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current selection guide to confirm pinout compatibility and packaging type. Ensure the external reference circuitry aligns with the device's REF pin requirements for optimal performance. Confirm that the supply voltage range meets the 2.7V to 5.5V specification for reliable operation across the intended temperature range.

Selection Notes

Select this component when a compact dual-channel solution with high accuracy is required. The LX suffix indicates mid-scale reset behavior with an external reference; choose LI if internal reference reset is preferred. Consider the H-grade temperature rating for automotive or harsh environments. Evaluate power consumption needs, as the device draws approximately 0.4mA at 3V with an external reference.

Part Context

This part belongs to the LTC2633 family, which includes 8-bit, 10-bit, and 12-bit variants. The family shares a common pinout and interface protocol but differs in resolution, linearity specifications, and power-on reset configurations. The HTS8 designation specifies the automotive temperature grade and the 8-lead TSOT-23 package form factor.

Replacement Considerations

Direct replacements within the same family include LTC2633HTS8-LI10 for internal reference reset or LTC2633HTS8-LZ10 for zero-scale reset. For higher resolution, the LTC2633HTS8-HI12 offers 12-bit accuracy with a 4.096V internal reference, though it requires a higher minimum supply voltage of 4.5V.