LTC2640AHTS8-HZ12#TRPBF

Overview

The LTC2640AHTS8-HZ12#TRPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference yielding a full-scale output of 4.096V and operates on a single supply voltage ranging from 4.5V to 5.5V. The device incorporates a rail-to-rail output buffer guaranteed monotonic over temperature, with a maximum integral nonlinearity error of ±1 LSB. It utilizes a SPI/MICROWIRE compatible 3-wire serial interface supporting clock rates up to 50MHz. Power-on reset options include clearing the output to zero-scale or mid-scale.

Feature Summary

• 12-bit resolution with ±1 LSB maximum INL error
• Integrated 4.096V precision reference with 10ppm/°C drift
• Single supply operation: 4.5V to 5.5V
• SPI/MICROWIRE 3-wire serial interface (up to 50MHz)
• Power-on reset to Zero-Scale or Mid-Scale

Applications

• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Optical Networking

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a 2,500-piece tape and reel packaging configuration as defined in the manufacturer's documentation. Confirm that the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure the A-grade electrical specification for ±1LSB maximum INL is required for the application. Cross-reference the pinout for the TSOT-23 package to confirm compatibility with the target footprint.

Selection Notes

Select this component when a 12-bit DAC with high accuracy (±1LSB INL) and low drift (10ppm/°C) is required in a compact 8-lead TSOT-23 package. The H-grade is necessary for applications operating between –40°C and 125°C. The internal 4.096V reference simplifies design by eliminating external reference components, provided the supply voltage remains within the 4.5V to 5.5V range. Consider the power-down current specifications if battery life is a critical constraint.

Part Context

This part belongs to the LTC2640 family of single-channel DACs. The 'A' denotes the electrical grade with ±1LSB max INL, 'H' indicates the automotive temperature range, 'Z' specifies power-on reset to zero-scale, and '12' confirms 12-bit resolution. Other variants exist with different resolutions (8, 10-bit), reset behaviors (M for mid-scale), and temperature grades (C, I).

Replacement Considerations

Direct replacements within the same family include LTC2640AHM12#TRMPBF (Mid-Scale reset, 500-unit reel) or LTC2640AHTS8-LZ12#TRPBF (2.5V full-scale). Verify that any substitute matches the 4.5V–5.5V supply requirement and the ±1LSB INL specification.