LTC2633ACTS8-HZ12#TRPBF

Overview

The LTC2633ACTS8-HZ12#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 providing 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 defaults to zero-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 selectable standard/fast mode clock rates
• Power-on reset to zero-scale for consistent initialization

Applications

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

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 documentation. Confirm that the H-grade temperature rating and A-grade accuracy meet the design requirements before procurement.

Selection Notes

Select this part when a dual-channel DAC with high accuracy (±1.5 LSB INL) and a fixed 4.096V internal reference is required. Ensure the system supply voltage supports the 4.5V to 5.5V operating range mandated by the H-grade variant. Consider the zero-scale power-on reset behavior if downstream circuitry requires a known low state during startup.

Part Context

This component belongs to the LTC2633 family of dual DACs. The 'A' designation indicates the higher accuracy grade with ±1.5 LSB INL, while 'H' specifies the automotive temperature range (-40°C to 125°C). The 'Z' code sets the power-on reset to zero-scale, and '12' denotes 12-bit resolution. It shares the same pinout and core architecture as other variants in the series but differs in performance grades and reset configurations.

Replacement Considerations

Direct replacements within the same family include LTC2633AHCTS8-HI12#TRPBF (mid-scale reset) or LTC2633AHCTS8-LZ12#TRPBF (2.5V reference). Verify that any substitute matches the 4.5V minimum supply requirement and the specific power-on reset state needed for the application.