LTC2633HTS8-LO12#TRPBF

Overview

The LTC2633HTS8-LO12#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 2.5V and operates on a single supply voltage ranging from 2.7V to 5.5V. 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, a power-on reset configuration that sets outputs to high impedance, and guaranteed monotonicity over the –40°C to 125°C temperature range.

Feature Summary

• Dual 12-bit resolution with rail-to-rail output buffers and integrated 2.5V precision reference
• I²C interface with selectable internal or external reference inputs
• Power-on reset to high impedance state for safe system initialization
• Guaranteed monotonic operation across –40°C to 125°C automotive temperature range

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel quantity of 2,500 pieces. Confirm the LO12 designation matches the required high-impedance power-on reset behavior and 12-bit accuracy grade. Ensure the H-grade automotive temperature rating aligns with environmental requirements. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm current production status and lead-free compliance.

Selection Notes

Select this component when a dual-channel DAC with high-impedance power-up is required. The LO12 suffix specifically configures the power-on reset to place DAC outputs in a high-impedance state while resetting data latches to mid-scale. This differs from other variants like LZ12 which reset to zero-scale. Ensure the application supply voltage falls within the 2.7V to 5.5V range suitable for the L-series full-scale voltage.

Part Context

This part belongs to the LTC2633 family of dual DACs, which offers various combinations of resolution, reset behavior, and full-scale voltages. The HTS8 designation identifies the H-grade automotive temperature variant in the TSOT-23 package. The LO12 code specifies the 12-bit resolution and the unique high-impedance power-on reset option, distinguishing it from standard mid-scale or zero-scale reset configurations within the same package type.

Replacement Considerations

Direct replacements must match the 12-bit resolution, dual-channel architecture, and high-impedance power-on reset feature. Verify pin compatibility with the 8-lead TSOT-23 package. Consider alternatives such as the LTC2633A series for potentially tighter linearity specs if the reset behavior remains compatible.