LTC2633CTS8-LZ12

Overview

The LTC2633CTS8-LZ12 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 12-bit resolution with integrated 2.5V precision reference (10ppm/°C drift)
• I2C-compatible serial interface with selectable standard or fast mode clock rates
• Rail-to-rail output buffers with guaranteed monotonic operation
• Power-on reset circuit configured to clear outputs to zero-scale

Applications

• Mobile communications systems
• Process control and industrial automation
• Portable equipment requiring low power consumption
• Automotive applications within commercial temperature limits

Procurement Notes

Verify the specific ordering suffix #TRMPBF against the manufacturer's current documentation to confirm tape and reel packaging quantities. Ensure the C-grade temperature rating (0°C to 70°C) aligns with the target operating environment requirements before procurement.

Selection Notes

Select this part for designs requiring dual-channel DAC functionality in a compact TSOT-23 footprint. The LZ12 suffix indicates a zero-scale power-on reset, which is critical for systems where downstream circuits must remain inactive during initialization. Confirm that the 2.7V minimum supply voltage meets the system's power budget constraints.

Part Context

This component belongs to the LTC2633 family of dual DACs, which offers various combinations of resolution, accuracy grades, and power-on reset options. The LTS8 designation identifies the 8-lead ThinSOT package type, while the LZ12 code specifies the 12-bit resolution, 2.5V internal reference, and zero-scale reset behavior.

Replacement Considerations

Direct replacements within the same family include LTC2633CTS8-LI12 (mid-scale reset) or LTC2633CTS8-HZ12 (4.096V reference). Verify that the alternative part's power-on reset state and supply voltage requirements are compatible with the existing circuit design.