LTC2632ACTS8-LX12#TRPBF

Overview

The LTC2632ACTS8-LX12#TRPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated 10ppm/°C reference with a full-scale output of 2.5V and operates on a single 2.7V to 5.5V supply. The device utilizes a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Key specifications include a maximum integral nonlinearity (INL) of ±1.5LSB, rail-to-rail output buffers, and guaranteed monotonicity. Upon power-up, the outputs reset to mid-scale in external reference mode. It is housed in an 8-lead TSOT-23 package.

Feature Summary

• Dual 12-bit DACs with integrated 10ppm/°C reference providing 2.5V full-scale output
• Maximum INL error of ±1.5LSB for high precision applications
• 3-wire serial interface compatible with SPI and MICROWIRE protocols
• Power-on reset function sets outputs to mid-scale in external reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a 2,500-piece tape and reel packaging format. Confirm that the LX suffix corresponds to the mid-scale reset behavior in external reference mode as defined in the manufacturer's selection guide. Ensure compatibility with the 2.7V to 5.5V supply range requirements for the LTC2632-L series.

Selection Notes

Select this part when a dual-channel 12-bit DAC with low drift is required. The LX variant is distinct because it resets to mid-scale specifically when using an external reference, unlike the LZ variant which resets to zero-scale. Verify that the 2.5V internal reference span meets the system voltage requirements, or utilize the REF pin for external reference configuration.

Part Context

This component belongs to the LTC2632 family of dual voltage-output DACs available in 8-, 10-, and 12-bit resolutions. The 'A' designation indicates an electrical grade with improved linearity (±1.5LSB max INL) compared to standard grades. The 'L' indicates the 2.5V full-scale version operating from 2.7V to 5.5V, while 'H' denotes the 4.096V version requiring 4.5V to 5.5V.

Replacement Considerations

Direct substitutes within the same family include LTC2632ACTS8-LI12#TRPBF (mid-scale reset in internal mode) and LTC2632ACTS8-LZ12#TRPBF (zero-scale reset). For different resolution needs, consider LTC2632ACTS8-LX10#TRPBF or LTC2632ACTS8-LX8#TRPBF.