LTC2640CTS8-LZ12#TRPBF

Overview

The LTC2640CTS8-LZ12#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 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 ±2.5 LSB, a typical settling time of 4.1µs at 3V, and a supply current of 180µA at 3V. It incorporates a power-on reset circuit that defaults the output to zero-scale.

Feature Summary

• Integrated 10ppm/°C precision reference with 2.5V full-scale output
• 3-wire SPI/MICROWIRE serial interface supporting up to 50MHz clock
• Power-on reset to zero-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 against the manufacturer's documentation to confirm the tape and reel quantity, as standard reels typically contain 2,500 pieces while designated sales channels may offer 500-unit reels. Ensure the component grade matches the required operating temperature range for the intended application environment.

Selection Notes

Select this part when a single-channel DAC with low power consumption and high accuracy in a compact TSOT-23 package is required. Choose the 'L' variant for 2.7V–5.5V operation if a 2.5V full-scale range is sufficient. Opt for the 'Z' suffix if a hardware-controlled asynchronous clear pin is needed instead of the REF_SEL configuration pin found on other variants.

Part Context

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

Replacement Considerations

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