LTC2640CTS8-LM10#TRMPBF

Overview

The LTC2640CTS8-LM10#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 2.5V and operates on a single supply voltage ranging from 2.7V 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 ±1 LSB, a settling time of 4.2µs at VCC = 3V, and a typical supply current of 180µA at 3V. The part is housed in an 8-lead TSOT-23 package and supports power-on reset to mid-scale.

Feature Summary

• Integrated Precision Reference: Provides a stable 2.5V full-scale output with a temperature coefficient of ±10ppm/°C.
• High Accuracy: Guaranteed monotonic operation with a maximum INL error of ±1 LSB for the 10-bit resolution variant.
• Low Power Consumption: Operates with a typical supply current of 180µA at 3V and reduces to a maximum of 1.8µA in power-down mode.
• Flexible Interface: Compatible with standard SPI and MICROWIRE protocols using a 3-wire serial interface supporting up to 50MHz clock rates.

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Portable Equipment

Procurement Notes

Verify the specific ordering suffix #TRMPBF confirms the 500-unit tape and reel packaging quantity as defined in the manufacturer's documentation. Ensure the component grade matches the required operating temperature range for commercial applications (0°C to 70°C). Cross-reference the datasheet revision date to confirm the accuracy of the electrical characteristics provided.

Selection Notes

Select this model when a 10-bit resolution is sufficient for the application, offering a balance between performance and pin count. The LM suffix indicates a power-on reset to mid-scale, which may be suitable for systems where a zero-voltage startup is not required. Compare against the LZ variant if a zero-scale reset is necessary for system initialization safety.

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. Variants differ primarily in resolution, full-scale voltage options (2.5V or 4.096V), and power-on reset behavior (mid-scale vs. zero-scale).

Replacement Considerations

Direct functional substitutes within the same package and specification profile include other members of the LTC2640 family, such as the LTC2640CTS8-LZ10#TRMPBF for zero-scale reset or the LTC2640ACTS8-LM10#TRMPBF for higher accuracy grades. Verify pin compatibility and electrical tolerances before substitution.