LTC2632HTS8-LI12#TRPBF

Overview

The LTC2632HTS8-LI12#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 a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V. It utilizes a 3-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1.5LSB, a settling time of 4.4µs at 3V, and low power consumption of 0.4mA at 3V. The outputs are rail-to-rail buffered and guaranteed monotonic.

Feature Summary

• Dual 12-bit DACs with integrated 2.5V precision reference (10ppm/°C drift)
• Maximum INL error of ±1.5LSB with guaranteed monotonicity
• 3-wire SPI/MICROWIRE serial interface with 50MHz clock capability
• Power-on reset function sets outputs to mid-scale in internal reference mode

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel quantity of 2,500 pieces. Confirm that the 'H' grade designation corresponds to the automotive temperature range (-40°C to 125°C) as defined in the manufacturer's selection guide. Ensure compatibility with the required supply voltage range of 2.7V to 5.5V for the specified full-scale output.

Selection Notes

Select this component when a dual-channel solution with high accuracy (±1.5LSB INL) and low noise is required in a compact TSOT-23 package. The LI12 variant is appropriate for applications requiring a 2.5V full-scale output with mid-scale power-on reset. Consider external reference modes if a different full-scale voltage is needed, though this part defaults to the internal 2.5V reference.

Part Context

This part belongs to the LTC2632 family of dual DACs, which offers various combinations of resolution (8, 10, or 12 bits), accuracy grades, and power-on reset options. The HTS8 designation specifies the automotive temperature grade and the 8-lead TSOT-23 plastic package. Other variants in the series include commercial grade parts and those with zero-scale or external reference reset configurations.

Replacement Considerations

Direct substitutes within the same family include the LTC2632ACTS8-LI12#TRMPBF, which shares identical electrical characteristics but differs in packaging quantity (500-piece reel). Parts with different reset behaviors, such as the LTC2632HTS8-LZ12, may require software adjustments to handle the zero-scale power-up state.