LTC2640CTS8-LM10#TRPBF

Overview

The LTC2640CTS8-LM10#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 2.5V and operates on a single supply voltage ranging from 2.7V 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) of ±1 LSB, a settling time of 3.8µs at 3V, and a typical supply current of 180µA at 3V. It incorporates a power-on reset circuit that sets the output to mid-scale upon initialization.

Feature Summary

• Integrated 10ppm/°C precision reference with 2.5V full-scale output
• 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 ordering suffix #TRMPBF against the datasheet documentation, which defines TR as a 2,500-piece tape and reel and TRM as a 500-piece tape and reel. Confirm the package type is 8-lead TSOT-23 and ensure the temperature grade corresponds to the Commercial range (0°C to 70°C). Cross-reference the manufacturer part number with official Analog Devices catalogs to confirm availability status.

Selection Notes

Select this component when a single-channel DAC with 10-bit resolution and an internal 2.5V reference is required. The LM suffix indicates a mid-scale power-on reset, suitable for applications where downstream circuits are active during startup. Ensure the supply voltage remains within the 2.7V to 5.5V range. For higher accuracy requirements, consider the A-grade variant which guarantees ±1LSB INL across the full temperature range.

Part Context

This part belongs to the LTC2640 family of single-channel SPI DACs available in 8-, 10-, and 12-bit resolutions. The family shares a common 8-lead TSOT-23 package and integrates a low-drift reference. Variants differ by resolution, full-scale voltage (2.5V or 4.096V), power-on reset behavior (zero or mid-scale), and temperature grade (Commercial, Industrial, or Automotive).

Replacement Considerations

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