LTC2640CTS8-HM10#TRPBF

Overview

The LTC2640CTS8-HM10#TRPBF is a single-channel, 10-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 on a single supply voltage ranging from 4.5V to 5.5V. The device utilizes a SPI/MICROWIRE compatible 3-wire serial interface with clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1 LSB, a settling time of 4.2µs at 5V, and a typical supply current of 200µA. It incorporates a power-on reset circuit that defaults the output to mid-scale.

Feature Summary

• Integrated 4.096V precision reference with 10ppm/°C temperature coefficient
• SPI/MICROWIRE compatible 3-wire serial interface supporting up to 50MHz clock
• Power-on reset to mid-scale for consistent system initialization
• Rail-to-rail output buffer guaranteed monotonic over temperature

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates a 2,500-piece tape and reel packaging configuration. Confirm the 'H' grade designation matches the required automotive temperature range of –40°C to +125°C. Ensure the 'M' power-on reset option aligns with system startup requirements, as opposed to zero-scale reset variants.

Selection Notes

Select this component when a 10-bit resolution with a fixed 4.096V internal reference is required. The H-grade temperature rating is necessary for environments exceeding standard industrial limits. Verify that the 4.5V minimum supply voltage is compatible with the system power rails, as lower voltage L-grade variants are not suitable for this specific part number.

Part Context

This part belongs to the LTC2640 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The CTS8 package denotes an 8-lead plastic TSOT-23 form factor. The HM10 designation specifically identifies the 10-bit resolution, mid-scale power-on reset behavior, and 4.096V full-scale output capability within the product line.

Replacement Considerations

Publicly confirmed substitutes include other members of the LTC2640 family such as LTC2640CTS8-LM10#TRPBF for 2.5V operation or LTC2640ACTS8-HM10#TRPBF for higher accuracy grades. Cross-model replacements like the LTC2631 series offer I2C interfaces but require interface adaptation.