LTC2640CTS8-HM8#TRMPBF

Overview

The LTC2640CTS8-HM8#TRMPBF is a single-channel, 8-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 specifications include a maximum integral nonlinearity (INL) error of ±0.5 LSB, a settling time of 4.2µs at 5V, and low power consumption of 200µA at 3V. It incorporates a power-on reset circuit that defaults the output to mid-scale.

Feature Summary

• Integrated 10ppm/°C precision reference with 4.096V 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 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-unit tape and reel packaging configuration. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure the HM suffix is correctly interpreted as the mid-scale power-on reset option. Cross-reference the CTS8 package code with the manufacturer's TSOT-23-8 mechanical drawings for footprint compatibility.

Selection Notes

Select this part when a 4.096V internal reference is required within a compact 8-lead TSOT-23 package. The H-grade is necessary for applications operating between –40°C and 125°C. Choose the HM variant if a mid-scale output state is preferred upon power-up rather than zero-scale. Verify that the 4.5V minimum supply voltage aligns with the system's power rails.

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 architecture featuring integrated references and low-power operation. Variants differ by resolution, full-scale voltage (2.5V or 4.096V), temperature grade, and power-on reset behavior. The LTS8 package provides a small form factor suitable for space-constrained designs.

Replacement Considerations

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