LTC2633AHTS8-HI12

Overview

The LTC2633AHTS8-HI12#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 4.096V and operates on a single 4.5V 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.

Feature Summary

• Dual 12-bit resolution with ±1.5 LSB maximum INL error
• Integrated 4.096V precision reference with 10ppm/°C drift
• I²C interface with standard and fast mode support
• Rail-to-rail output buffers and guaranteed monotonicity

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates a tape and reel packaging configuration containing 2,500 pieces. Confirm that the HI designation corresponds to the 4.096V full-scale internal reference and the H grade ensures operation within the –40°C to 125°C automotive temperature range. Ensure compatibility with 4.5V to 5.5V supply voltages during procurement planning.

Selection Notes

Select this component when dual-channel 12-bit accuracy is required in a compact 8-lead TSOT-23 footprint. The HI suffix specifies a 4.096V full-scale output requiring a minimum 4.5V supply, distinguishing it from the 2.5V L-grade variants. The A grade provides tighter linearity specifications (±1.5 LSB INL) compared to standard grades. Verify that the power-on reset behavior aligns with system startup requirements for mid-scale initialization.

Part Context

This part belongs to the LTC2633 family of dual DACs, which offers various combinations of resolution, reference voltage, and power-on reset configurations. The LTC2633AHTS8-HI12 represents the high-accuracy, high-voltage reference variant within the series. It shares the same pinout and I²C protocol as other LTC2633 models but differs in electrical performance and operating voltage constraints.

Replacement Considerations

Direct replacements within the same family include LTC2633AHZ12#TRPBF for zero-scale power-on reset or LTC2633ALx12 variants for 2.5V full-scale applications. Cross-family substitutes require verification of pin compatibility and I²C address settings.