LTC2632HTS8-LZ12#TRPBF

Overview

The LTC2632HTS8-LZ12#TRPBF 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 a temperature coefficient of 10ppm/°C. The device operates on a single supply ranging from 2.7V to 5.5V and communicates via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) of ±2.5LSB, a settling time of 4.4µs at 3V, and a typical supply current of 0.4mA. The part includes a power-on reset function that initializes outputs to zero-scale.

Feature Summary

• Dual 12-bit DACs with integrated 2.5V precision reference (10ppm/°C)
• Rail-to-rail output buffers with guaranteed monotonicity
• Power-on reset to zero-scale for consistent system initialization
• 3-wire serial interface (SPI/MICROWIRE) with 50MHz clock capability

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF corresponds to the tape and reel packaging configuration required for automated assembly. Confirm that the 'H' grade designation aligns with the intended operating temperature range and environmental conditions for the final application design.

Selection Notes

Select this component when a dual-channel DAC with low drift and zero-scale power-up behavior is required. Ensure the supply voltage remains within the 2.7V to 5.5V range. For applications requiring mid-scale power-up or external references, consider alternative suffixes such as 'I' or 'X'. Verify that the ±2.5LSB INL specification meets the system accuracy requirements.

Part Context

This part belongs to the LTC2632 family, which offers various combinations of resolution (8-, 10-, 12-bit), full-scale voltages (2.5V or 4.096V), and power-on reset behaviors. The 'L' suffix indicates the 2.5V internal reference variant, while 'Z' specifies the zero-scale reset option. The 'A' electrical grade is absent, indicating standard linearity performance rather than the tighter ±1.5LSB specification found in LTC2632A variants.

Replacement Considerations

Direct substitutes within the same family include LTC2632HTS8-LI12#TRPBF (mid-scale reset) or LTC2632HTS8-HZ12#TRPBF (4.096V full-scale). Cross-family replacements require verification of pin compatibility, interface protocols, and electrical parameter alignment.