LTC2632AHTS8-HI12#TRPBF

Overview

The LTC2632AHTS8-HI12#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 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 electrical specifications include a maximum integral nonlinearity (INL) error of ±1.5LSB, rail-to-rail output buffers, and guaranteed monotonicity over the specified range.

Feature Summary

• Dual 12-bit DACs with integrated 4.096V reference (10ppm/°C)
• Maximum INL error of ±1.5LSB
• SPI/MICROWIRE compatible 3-wire serial interface
• Power-on reset to mid-scale in internal reference mode

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive

Procurement Notes

Verify the specific ordering suffix #TRPBF corresponds to the tape and reel packaging configuration required for automated assembly. Confirm that the automotive temperature grade (H) and high accuracy grade (A) align with the design requirements. Ensure the 4.5V minimum supply voltage constraint is met by the system power rails before procurement.

Selection Notes

Select this component when a dual-channel DAC with high accuracy (±1.5LSB INL) and an integrated low-drift reference is required. The H-grade variant necessitates a supply voltage between 4.5V and 5.5V, distinguishing it from the L-grade which supports 2.7V to 5.5V. The HI suffix indicates a power-on reset behavior setting outputs to mid-scale, which may be preferred over zero-scale for specific downstream circuit initialization needs.

Part Context

This part belongs to the LTC2632 family of dual DACs available in various resolutions (8, 10, 12-bit) and accuracy grades. The 'A' designation specifies the ±1.5LSB maximum INL performance, while 'H' denotes the automotive temperature range (-40°C to 125°C) and the 4.096V full-scale output capability. The 'TS8' indicates the 8-lead TSOT-23 plastic package type.

Replacement Considerations

Direct substitutes within the same family include the LTC2632ACTS8-LI12#TRPBF for lower voltage operation or different reset behaviors. Cross-family replacements should match the 12-bit resolution, dual channel architecture, and SPI interface compatibility while verifying supply voltage and package constraints.