LTC2632CTS8-LZ8

Overview

The LTC2632CTS8-LZ8 is a dual 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated 10ppm/°C precision reference with a full-scale output of 2.5V. The device operates on a single supply ranging from 2.7V to 5.5V and utilizes a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. It incorporates rail-to-rail output buffers, double-buffered data latches, and a power-on reset circuit configured to clear outputs to zero-scale upon initialization.

Feature Summary

• Dual 8-bit DACs with integrated 2.5V full-scale reference
• Rail-to-rail output buffers with guaranteed monotonicity
• Power-on reset to zero-scale in internal reference mode
• 3-wire serial interface supporting SCK frequencies up to 50MHz

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape-and-reel specifications. Confirm that the commercial temperature grade (0°C to 70°C) aligns with the intended operational environment requirements.

Selection Notes

Select this component for applications requiring low pin count and integrated reference accuracy. Ensure the system supply voltage remains within the 2.7V to 5.5V range. Verify that the 8-bit resolution meets the required output granularity and that the zero-scale power-on reset behavior is suitable for downstream circuit protection.

Part Context

This part belongs to the LTC2632 family of dual DACs available in various resolutions (8-, 10-, and 12-bit) and accuracy grades. The 'L' designation indicates a 2.5V full-scale internal reference, while 'Z' specifies the zero-scale power-on reset option. The 'CTS8' identifier denotes the commercial temperature grade and 8-lead TSOT-23 package.

Replacement Considerations

Substitutes must match the 8-lead TSOT-23 package and 2.7V–5.5V supply range. Verify compatibility with the 3-wire SPI interface timing and ensure equivalent linearity and settling time specifications are met for the target application.