LTC2633AHTS8-LI12#TRMPBF

Overview

The LTC2633AHTS8-LI12#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 providing a full-scale output of 2.5V with a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V and 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 automotive temperature range.

Feature Summary

• Dual 12-bit resolution with ±1.5 LSB maximum INL error
• Integrated 2.5V full-scale reference with 10ppm/°C drift
• Automotive grade operation from –40°C to 125°C
• Power-on reset configured to mid-scale in internal reference mode

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' designation corresponds to the automotive temperature grade (-40°C to 125°C). Ensure the 'I' power-on reset code matches system requirements for mid-scale initialization upon power-up.

Selection Notes

Select this part for applications requiring dual channels with high linearity (±1.5 LSB INL) in a compact TSOT-23 footprint. The 2.5V internal reference simplifies design by eliminating external components. Verify that the 2.7V minimum supply voltage aligns with the system's power rails, as higher voltage grades require 4.5V minimum.

Part Context

This component belongs to the LTC2633 family of dual DACs. The specific suffixes define its attributes: 'A' denotes the ±1.5 LSB accuracy grade, 'H' indicates the automotive temperature range, 'I' sets the power-on reset to mid-scale, and '12' specifies 12-bit resolution. It is distinct from the 'L' grade parts which operate at lower voltages but have wider INL tolerances.

Replacement Considerations

Direct substitutes within the same family include LTC2633AHTS8-LZ12#TRMPBF (zero-scale reset) or LTC2633AHTS8-HI12#TRMPBF (4.096V reference). Cross-family replacements like the LTC2635 offer quad channels but differ in pin count and package size.