LTC2632CTS8-LZ8#TRPBF

Overview

The LTC2632CTS8-LZ8#TRPBF is a dual 8-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 voltage ranging from 2.7V to 5.5V. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Key specifications include a maximum integral nonlinearity (INL) error of ±2.5LSB, a settling time of 3.5µs at 3V, and a power-on reset function that clears the output to zero-scale.

Feature Summary

• Dual 8-bit DACs with integrated 2.5V full-scale reference (10ppm/°C drift)
• Rail-to-rail output buffers with guaranteed monotonicity
• 3-wire SPI/MICROWIRE serial interface with 50MHz clock capability
• Power-on reset to zero-scale for consistent system initialization

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF corresponds to the tape and reel packaging configuration required for automated assembly. Confirm that the LTS8 package marking matches the intended design requirements. Ensure the commercial temperature grade (0°C to 70°C) aligns with the operational environment constraints of the final application.

Selection Notes

Select this component when a low-pin-count, dual-channel DAC with an internal reference is required. The 8-bit resolution is suitable for applications where cost and pin count are prioritized over high precision. Choose the LZ variant if a zero-scale power-on reset state is necessary to prevent transient outputs during system startup. Verify that the 2.7V to 5.5V supply range covers the system's available voltage rails.

Part Context

This part belongs to the LTC2632 family, which offers various combinations of resolution (8, 10, or 12 bits), accuracy grades, and power-on reset behaviors. The 'L' designation indicates the 2.5V full-scale internal reference option, while 'Z' specifies the zero-scale reset mode. The 'CTS8' denotes the commercial temperature grade and TSOT-23 package type.

Replacement Considerations

Direct replacements within the same family include other LTC2632 variants with different resolutions or reset modes, such as LTC2632CTS8-LZ10#TRPBF or LTC2632CTS8-LZ12#TRPBF, provided the interface and pinout compatibility is maintained.