LTC2633HTS8-LX12

Overview

The LTC2633HTS8-LX12 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 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) error of ±2.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the –40°C to 125°C temperature range. Power-on reset is configured to mid-scale in external reference mode.

Feature Summary

• Dual 12-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 ±2.5 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 product selection guide to confirm pinout compatibility and packaging type. Ensure the design supports the required I²C bus pull-up resistors and that the supply voltage remains within the 2.7V to 5.5V range for specified performance.

Selection Notes

Select this part when a dual-channel DAC with a 2.5V internal reference and external reference mode power-on reset is required. Compare against LTC2633A variants if tighter linearity (±1.5 LSB INL) is necessary, noting that the standard grade offers ±2.5 LSB INL. Confirm that the 8-lead TSOT-23 package fits the PCB layout constraints.

Part Context

This component belongs to the LTC2633 family of dual DACs, which also includes 10-bit and 8-bit resolutions, as well as variants with 4.096V internal references (H-grade). The 'L' suffix denotes the 2.5V full-scale internal reference option, while 'X' specifies the power-on reset behavior for external reference configurations.

Replacement Considerations

Direct replacements within the same family include LTC2633HTS8-LI12 (internal reference reset) and LTC2633HTS8-LZ12 (zero-scale reset). For higher accuracy requirements, consider the LTC2633AHTS8-LX12, which guarantees ±1.5 LSB INL instead of ±2.5 LSB.