LTC2632HTS8-LZ12

Overview

The LTC2632HTS8-LZ12 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 within a supply voltage range of 4.5V to 5.5V. The device supports a 3-wire SPI/MICROWIRE interface with clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±2.5LSB, a settling time of 4.9µs at 5V, and a power-on reset function that clears outputs to zero-scale. It is designed for automotive applications with an operating temperature range of –40°C to +125°C.

Feature Summary

• Dual 12-bit DACs with integrated 4.096V precision reference (±10ppm/°C drift)
• Automotive temperature grade (-40°C to +125°C) in 8-lead TSOT-23 package
• Power-on reset to zero-scale for consistent system initialization
• SPI/MICROWIRE compatible 3-wire serial interface with 50MHz clock rate

Applications

• Automotive systems requiring precise analog control
• Process control and industrial automation equipment
• Portable battery-powered instrumentation
• Automatic test equipment (ATE)

Procurement Notes

Verify the specific suffix HTS8 against official documentation to confirm the temperature grade and package variant. Ensure the ordering code matches the required power-on reset behavior (Z = Zero-Scale). Confirm availability through designated sales channels as tape and reel options may vary by region.

Selection Notes

Select this part when a dual-channel DAC with high accuracy and automotive reliability is needed. The LZ12 suffix indicates a zero-scale power-on reset, suitable for circuits sensitive to initial output states. Ensure the supply voltage remains between 4.5V and 5.5V for specified performance. Consider the LTC2632A series if tighter linearity specifications (±1.5LSB INL) are required.

Part Context

This component belongs to the LTC2632 family of low-power, rail-to-rail output DACs. The 'H' designation specifies the 4.096V full-scale internal reference version, which requires a minimum supply of 4.5V. The 'Z' power-on reset option distinguishes it from mid-scale variants, ensuring outputs start at ground potential upon power-up.

Replacement Considerations

For direct pin-compatible replacements with similar specifications, consider the LTC2632ACTS8-HZ12#TRMPBF or LTC2632HTS8-HI12#TRMPBF. Verify that the substitute part matches the required power-on reset state and temperature grade.