LTC2633AHTS8-LI12

Overview

The LTC2633AHTS8-LI12#TRPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. 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 ±1.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the –40°C to 125°C temperature range. Power-on reset options allow initialization to mid-scale in internal reference mode.

Feature Summary

• Dual 12-bit DACs with integrated 2.5V full-scale reference
• Maximum INL error of ±1.5 LSB for high accuracy
• Rail-to-rail output buffers with guaranteed monotonicity
• 2-wire I²C interface with selectable power-on reset states

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Power Supply Margining
• Portable Equipment
• Automotive Systems

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a 2,500-piece tape and reel packaging format. Confirm that the 'H' grade designation corresponds to the automotive temperature range of –40°C to 125°C as specified in the selection guide. Ensure compatibility with the required I²C address configuration via the CA0 pin before procurement.

Selection Notes

Select this part when a dual-channel solution with high DC accuracy (±1.5 LSB INL) is required in a compact 8-lead TSOT-23 package. Choose the 'L' suffix variant if the system requires a 2.5V full-scale output range powered by a 2.7V to 5.5V supply. The 'I' power-on reset code ensures outputs initialize to mid-scale, which may be necessary for specific downstream circuit requirements during startup.

Part Context

This component belongs to the LTC2633 family of dual DACs, which offers various combinations of resolution, accuracy grades, and power-on reset behaviors. The 'A' grade denotes the highest linearity performance within the family, while the 'H' grade extends the operating temperature range for automotive applications. It serves as a compact analog frontend for systems requiring precise voltage generation with minimal external components.

Replacement Considerations

Direct substitutes within the same family include LTC2633ACTS8-LI12#TRPBF or other variants with different power-on reset codes (e.g., LZ12 for zero-scale). Cross-family replacements like the LTC2635 offer quad channels but require different packaging and pinout considerations.