LTC2640HTS8-HM10#TRMPBF

Overview

The LTC2640HTS8-HM10#TRMPBF is a single-channel, 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and operates on a 4.5V to 5.5V supply. The device includes a rail-to-rail output buffer guaranteed monotonic over temperature. It utilizes a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Key electrical parameters include a typical settling time of 4.2µs at ±1LSB, a maximum integral nonlinearity (INL) of ±1LSB, and a power-down current of 4µA maximum. The component is housed in an 8-lead TSOT-23 package.

Feature Summary

• Integrated 10ppm/°C precision reference providing 4.096V full-scale output
• Rail-to-rail output buffer guaranteed monotonic over the operating temperature range
• SPI/MICROWIRE compatible 3-wire serial interface supporting clock rates up to 50MHz
• Power-on reset circuit configured to initialize output to mid-scale

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel packaging configuration as defined in the manufacturer's documentation. Confirm that the H-grade designation matches the required -40°C to +125°C automotive temperature range for the intended 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 internal reference is required alongside 10-bit resolution. The HM suffix specifies a mid-scale power-on reset state; choose the LZ suffix if a zero-scale initialization is preferred. Verify that the system supply voltage remains within the 4.5V to 5.5V range to ensure specified performance. Consider the external reference mode capability if a different full-scale voltage is needed.

Part Context

This component belongs to the LTC2640 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The family shares a common 8-lead TSOT-23 package and interface architecture. Variations exist based on full-scale voltage (2.5V or 4.096V), power-on reset behavior (zero or mid-scale), and temperature grades (Commercial, Industrial, Automotive).

Replacement Considerations

Direct replacements within the same family include LTC2640ITS8-HM10#TRMPBF for industrial temperature grade or LTC2640CTS8-HM10#TRMPBF for commercial grade. Cross-family substitutes require verification of pin compatibility and electrical parameter alignment.