LTC2640AHTS8-HZ12#TRMPBF

Overview

The LTC2640AHTS8-HZ12#TRMPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference providing a full-scale output of 4.096V and operates within a supply voltage range of 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 ±1LSB. It utilizes a SPI/MICROWIRE compatible 3-wire serial interface supporting clock rates up to 50MHz. The component includes power-on reset functionality to zero-scale and is housed in an 8-lead TSOT-23 package.

Feature Summary

• Integrated 4.096V precision reference with 10ppm/°C temperature coefficient
• Maximum INL error of ±1LSB for the A-grade 12-bit resolution
• SPI/MICROWIRE compatible 3-wire serial interface with 50MHz clock rate
• Power-on reset to zero-scale with asynchronous DAC clear pin

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel packaging quantity 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 part number against official Analog Devices databases to confirm current manufacturing status and lead-free compliance.

Selection Notes

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

Part Context

This part belongs to the LTC2640 family of single-channel DACs available in 12-, 10-, and 8-bit resolutions. The family offers combinations of full-scale voltages (2.5V or 4.096V) and power-on reset options (zero or mid-scale). The A-grade designation specifically denotes the highest linearity performance within the series, ensuring a maximum INL of ±1LSB for the 12-bit version.

Replacement Considerations

Direct replacements within the same package and pinout include other LTC2640 variants such as LTC2640AHM12#TRMPBF (mid-scale reset) or LTC2640AHTS8-LZ12#TRMPBF (2.5V full-scale). Verify that the replacement maintains the required temperature grade (H) and electrical accuracy (A).