LTC2632CTS8-HZ8#TRMPBF

Overview

The LTC2632CTS8-HZ8#TRMPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 4.5V to 5.5V. It utilizes a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Key specifications include a maximum integral nonlinearity (INL) error of ±2.5LSB, a settling time of 4.9µs at 5V, and power-on reset functionality that clears the output to zero-scale in internal reference mode.

Feature Summary

• Dual 12-bit DACs with integrated 4.096V precision reference
• Maximum INL error of ±2.5LSB over specified temperature range
• Power-on reset to zero-scale in internal reference mode
• 3-wire SPI/MICROWIRE compatible serial interface operating up to 50MHz

Applications

• Process control and industrial automation systems
• Portable battery-powered equipment
• Automotive electronic applications
• Automatic test equipment

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel packaging quantity. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C and the 4.5V to 5.5V supply requirement. Ensure compatibility with the 8-lead TSOT-23 package dimensions for PCB layout.

Selection Notes

Select this part when a dual-channel DAC with high accuracy and low drift is required. The H-series variant is necessary for applications requiring a 4.096V full-scale output and operation within the automotive temperature range. The Z-suffix ensures outputs initialize to zero upon power-up, which is critical for safety-sensitive downstream circuits. Verify supply voltage constraints against the 4.5V minimum requirement.

Part Context

This component belongs to the LTC2632 family of dual DACs available in various resolutions (8-, 10-, and 12-bit) and accuracy grades. The CTS8 designation specifies the commercial temperature grade (0°C to 70°C) is incorrect; the datasheet defines 'H' as Automotive (-40°C to 125°C) and 'C' as Commercial (0°C to 70°C). However, the model provided contains 'H', implying Automotive grade. The 'Z' indicates Zero-Scale reset, while 'I' indicates Mid-Scale reset. The 'L' and 'H' prefixes denote 2.5V and 4.096V full-scale outputs respectively.

Replacement Considerations

Direct substitutes within the same family include LTC2632CTS8-HI8#TRMPBF (Mid-Scale reset) or LTC2632CTS8-LZ8#TRMPBF (2.5V Full-Scale). Cross-family replacements require verification of pinout compatibility and electrical parameter alignment.