LTC2633HTS8-LX12#TRMPBF

Overview

The LTC2633HTS8-LX12#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, rail-to-rail output buffers, and guaranteed monotonicity over the –40°C to 125°C temperature range.

Feature Summary

• Dual 12-bit DACs with integrated 2.5V precision reference (10ppm/°C drift)
• I²C interface with selectable power-on reset to mid-scale in external reference mode
• Rail-to-rail output buffers with ±1.5 LSB maximum INL error
• Operates from 2.7V to 5.5V supply with low power consumption (0.4mA at 3V)

Applications

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

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 LX12 designation corresponds to the specific power-on reset behavior for external reference mode applications. Ensure compatibility with the required operating temperature range and supply voltage constraints during sourcing.

Selection Notes

Select this part when a dual-channel 12-bit DAC with a 2.5V internal reference is required in a compact TSOT-23 package. The LX code specifies a power-on reset to mid-scale in external reference mode; verify this matches system initialization requirements compared to zero-scale or high-impedance options. Ensure the application supply voltage falls within the 2.7V to 5.5V range for specified performance.

Part Context

This component belongs to the LTC2633 family of dual I²C DACs, which offers various combinations of resolution, reference voltage, and power-on reset states. The HTS8 variant denotes the automotive temperature grade (-40°C to 125°C) in the TSOT-23 package. The LX12 suffix specifically configures the device for 12-bit resolution with mid-scale reset in external reference mode.

Replacement Considerations

Direct replacements within the same family include LTC2633HTS8-LI12#TRMPBF (internal reference reset) or LTC2633HTS8-LZ12#TRMPBF (zero-scale reset). For different resolutions, consider LTC2633HTS8-LX10#TRMPBF (10-bit) or LTC2633HTS8-LX8#TRMPBF (8-bit), noting changes in linearity specifications.