LTC2633AHTS8-LZ12#TRMPBF

Overview

The LTC2633AHTS8-LZ12#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 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 defaults to zero-scale.

Feature Summary

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

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. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure compatibility with the required I²C bus voltage levels and check for lead-free RoHS compliance status before procurement.

Selection Notes

Select this part for applications requiring dual channels with high accuracy (±1.5 LSB INL) in a compact TSOT-23 footprint. The LZ code specifies a zero-scale power-on reset, suitable for systems where outputs must start at ground potential. Choose the L-grade variant if a lower supply voltage range (2.7V–5.5V) is needed compared to the H-grade's 4.5V–5.5V requirement.

Part Context

This component belongs to the LTC2633 family of dual DACs. The 'A' denotes the higher accuracy grade with ±1.5 LSB INL, while 'H' specifies the extended temperature range. The 'LZ' combination sets the internal reference to 2.5V and configures the power-on reset state to zero-scale. It serves as a low-power, space-efficient solution for multi-channel analog output needs.

Replacement Considerations

Direct substitutes within the same family include LTC2633AHTS8-LI12#TRMPBF (mid-scale reset) or LTC2633AHTS8-HZ12#TRMPBF (4.096V full-scale). For quad-channel requirements, consider the LTC2635 series. Verify pinout compatibility when replacing with other I²C DACs.