LTC2640CTS8-HM12#TRPBF

Overview

The LTC2640CTS8-HM12#TRPBF 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 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 ±2.5 LSB, a typical settling time of 4.2µs at 5V, and a supply current of 200µA at 3V. The part is housed in an 8-lead TSOT-23 package and includes power-on reset functionality set 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 rates
• Power-on reset configured to mid-scale output upon initialization
• Rail-to-rail output buffer guaranteed monotonic over temperature

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics
• Optical networking devices

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms the 2,500-piece tape and reel packaging quantity. Confirm that the 'H' grade designation matches the required automotive temperature range of –40°C to 125°C for the application environment. Ensure the 4.5V minimum supply voltage requirement aligns with the system power rails.

Selection Notes

Select this part when a 4.096V full-scale output is required with an internal reference. The 'HM' suffix indicates a mid-scale power-on reset, which is suitable if downstream circuits can tolerate a nonzero initial output. For applications requiring zero-scale initialization, consider the 'HZ' variant. Verify that the 4.5V to 5.5V operating voltage range is compatible with the available supply.

Part Context

This component belongs to the LTC2640 family of single-channel DACs, which also includes variants with 2.5V full-scale outputs (LTC2640-L) and different resolution options such as 10-bit and 8-bit. The family shares the same 8-lead TSOT-23 package and serial interface architecture, allowing for design flexibility across different accuracy and voltage requirements within the same footprint.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.