LTC2632ACTS8-LX12#TRMPBF

Overview

The LTC2632ACTS8-LX12#TRMPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in an 8-lead TSOT-23 package. It features an integrated 2.5V full-scale reference with a temperature coefficient of 10ppm/°C and operates on a single supply ranging from 2.7V to 5.5V. The device utilizes a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1.5LSB, a settling time of 4.4µs at 3V, and low power consumption of 0.4mA at 3V. This specific variant is configured for power-on reset to mid-scale when operating in external reference mode.

Feature Summary

• Dual 12-bit DACs with rail-to-rail output buffers and guaranteed monotonicity
• Integrated 2.5V precision reference with 10ppm/°C drift
• Maximum INL error of ±1.5LSB for high accuracy applications
• Power-on reset to mid-scale in external reference mode (suffix LX)

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics

Procurement Notes

Verify the ordering suffix #TRMPBF indicates a 500-piece tape and reel packaging configuration. Confirm that the LX suffix specifically requires external reference mode selection for the mid-scale power-on reset behavior. Ensure the design supports the 2.7V to 5.5V supply range required for the LTC2632-L series.

Selection Notes

Select this part when a dual-channel 12-bit DAC with high linearity (±1.5LSB INL) is required in a compact TSOT-23 package. Choose the LX suffix if the application demands a mid-scale output upon power-up while using an external reference voltage. Ensure the system supply voltage remains within the 2.7V to 5.5V range specified for the LTC2632-L family.

Part Context

This component belongs to the LTC2632 family of dual DACs, which offers various combinations of resolution (8-, 10-, or 12-bit), full-scale voltage (2.5V or 4.096V), and power-on reset behaviors. The 'A' grade denotes the higher accuracy version with ±1.5LSB maximum INL, distinguishing it from standard grades with wider tolerance limits.

Replacement Considerations

Direct substitutes within the same family include LTC2632ACTS8-LI12#TRMPBF (internal reference reset) and LTC2632ACTS8-LZ12#TRMPBF (zero-scale reset). Cross-family replacements require verification of pin compatibility and electrical parameter alignment.