LTC2633CTS8-LZ8

Overview

The LTC2633CTS8-LZ8 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 precision reference with a full-scale output of 2.5V and operates on a single 2.7V to 5.5V supply. The device communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±2.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the commercial temperature range of 0°C to 70°C. Upon power-up, the outputs reset to zero-scale.

Feature Summary

• Dual-channel 12-bit resolution with integrated 2.5V precision reference
• I²C interface with selectable standard (100kHz) and fast (400kHz) clock rates
• Rail-to-rail output buffers with guaranteed monotonic operation
• Power-on reset circuit configured for zero-scale initialization

Applications

• Mobile communications systems
• Process control and industrial automation
• Portable equipment requiring low power consumption
• Automotive electronics

Procurement Notes

Verify the specific ordering suffixes against the manufacturer's current documentation to ensure compatibility with required packaging options such as tape and reel quantities. Confirm that the commercial temperature grade (0°C to 70°C) meets the operational environmental requirements of the target application before procurement.

Selection Notes

Select this component when a compact dual-channel DAC with an internal reference is required for space-constrained designs. Ensure the system supply voltage falls within the 2.7V to 5.5V range compatible with the 'L' variant. Verify that the I²C bus speed requirements align with the supported standard and fast modes, and confirm that zero-scale power-on behavior is acceptable for the connected downstream circuitry.

Part Context

This part belongs to the LTC2633 family, which offers various combinations of resolution (8-, 10-, or 12-bit), accuracy grades, and power-on reset options. The 'CTS8' designation indicates the commercial temperature grade and TSOT-23 package, while 'LZ8' specifies the 2.5V full-scale internal reference, zero-scale reset, and 12-bit resolution configuration.

Replacement Considerations

Direct replacements within the same family include LTC2633CTS8-HZ8#TRPBF for a 4.096V full-scale output or LTC2633CTS8-LI8#TRPBF for mid-scale power-on reset. Cross-family alternatives like the LTC2635 offer quad channels but require different packaging and pin configurations.