LTC2633ACTS8-LZ12#TRPBF

Overview

The LTC2633ACTS8-LZ12#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 utilizes 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 defaults to zero-scale in internal reference mode.

Feature Summary

• Dual 12-bit resolution with ±1.5 LSB maximum INL error
• Integrated 2.5V full-scale reference with 10ppm/°C drift
• I2C interface with selectable power-on reset to zero-scale
• Rail-to-rail output buffers in 8-lead TSOT-23 package

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF corresponds to the 2,500-piece tape and reel packaging configuration as defined in the manufacturer's order information. Confirm that the LZ12 designation matches the required zero-scale power-on reset behavior and 2.5V full-scale voltage for the target application design.

Selection Notes

Select this component when dual-channel 12-bit accuracy with low integral nonlinearity is required in a compact footprint. Ensure the system supply voltage remains within the 2.7V to 5.5V range compatible with the 'L' grade variant. Verify that the I2C bus timing requirements align with the specified clock frequencies and that the zero-scale power-on reset state meets initial system safety constraints.

Part Context

This part belongs to the LTC2633 family of dual DACs, which offers various combinations of resolution, accuracy grades, and power-on reset options. The 'A' suffix denotes the higher accuracy grade with ±1.5 LSB INL, while 'L' indicates the 2.5V internal reference version. The 'TS8' package identifies the 8-lead ThinSOT form factor suitable for space-constrained designs.

Replacement Considerations

Direct replacements within the same family include LTC2633ACTS8-LI12#TRPBF for mid-scale reset or LTC2633ACTS8-HZ12#TRPBF for 4.096V full-scale operation. Cross-family substitutes like the LTC2635 offer quad channels but differ in pin count and package type.