LTC2633AHTS8-LX12

Overview

The LTC2633AHTS8-LX12#TRPBF 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 ±1.5 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)
• Maximum INL error of ±1.5 LSB for high accuracy
• I²C interface with selectable internal or external reference input
• Rail-to-rail output buffers with power-on reset to mid-scale

Applications

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

Procurement Notes

Verify the complete ordering suffix #TRPBF indicates a tape and reel quantity of 2,500 pieces. Confirm the 'H' grade designation matches the required –40°C to 125°C operating temperature range for the specific application environment. Ensure the I²C address configuration via the CA0 pin aligns with the system bus requirements.

Selection Notes

Select this part when a dual-channel 12-bit DAC with low power consumption and a compact TSOT-23 footprint is required. The LX12 suffix specifies mid-scale power-on reset in external reference mode; choose LI12 for internal reference reset or LZ12 for zero-scale reset if different startup behaviors are needed. Verify that the 2.5V full-scale output meets the downstream circuit voltage requirements.

Part Context

This component belongs to the LTC2633 family of dual DACs, which also includes 10-bit and 8-bit variants. The 'A' grade denotes improved linearity performance (±1.5 LSB INL) compared to the standard grade (±2.5 LSB). The family shares identical pinouts and I²C protocols, allowing for design flexibility across resolution and accuracy requirements within the same package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify compatibility with existing I²C addressing and reference configurations if considering alternative manufacturers.