LTC2640AITS8-HZ12#TRMPBF

Overview

The LTC2640AITS8-HZ12#TRMPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It integrates a precision reference with a temperature coefficient of ±10ppm/°C and a rail-to-rail output buffer guaranteed monotonic over temperature. The device operates on a single supply ranging from 2.7V to 5.5V for the L-grade variant, providing a full-scale output of 2.5V. It features 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 ±1LSB, a typical settling time of 4.1µs at 3V, and low power consumption of 180µA at 3V.

Feature Summary

• Integrated high-accuracy reference with ±10ppm/°C drift and 2.5V full-scale output
• Maximum INL error of ±1LSB for 12-bit resolution
• Rail-to-rail output buffer guaranteed monotonic over temperature
• 3-wire SPI/MICROWIRE compatible serial interface with 50MHz clock rate

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems

Procurement Notes

Verify the specific suffix #TRMPBF indicates a 500-piece tape and reel packaging configuration as defined in the manufacturer's ordering information. Confirm that the H-grade temperature rating (-40°C to 125°C) aligns with the application environment requirements. Ensure the 2.7V to 5.5V supply range matches the system power architecture.

Selection Notes

Select this component when a single-channel DAC with integrated precision reference and tight linearity (±1LSB) is required. The H-grade temperature range supports automotive and harsh industrial environments. Consider the external reference mode if a different full-scale voltage or lower noise performance is needed compared to the internal 2.5V reference.

Part Context

This part belongs to the LTC2640 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The 'A' designation specifies the enhanced accuracy grade with ±1LSB maximum INL. The 'H' indicates the extended temperature range suitable for automotive applications, while 'TS8' denotes the 8-lead ThinSOT package.

Replacement Considerations

Direct replacements within the same family include LTC2640AITS8-LZ12#TRMPBF for zero-scale reset instead of mid-scale, or LTC2640AITS8-HM12#TRMPBF for mid-scale reset. For different resolutions, consider LTC2640AITS8-HZ10 or LTC2640AITS8-HZ8.