LTC2632CTS8-LZ12

Overview

The LTC2632CTS8-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 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 rail-to-rail output buffers. The part is guaranteed monotonic and includes a power-on reset function that clears the output to zero-scale upon initialization.

Feature Summary

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

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRMPBF against current manufacturer availability, as distribution status may vary by region. Confirm that the commercial temperature grade (0°C to 70°C) aligns with the target application environment requirements before finalizing procurement.

Selection Notes

Select this component when a dual-channel, low-pin-count DAC with an internal reference is required. The LZ suffix ensures outputs start at zero-scale during power-up, which is critical for applications where downstream circuits must remain inactive until the DAC is fully powered. Ensure the supply voltage remains within the 2.7V to 5.5V range for specified performance.

Part Context

This part belongs to the LTC2632 family, which offers various combinations of resolution (8-, 10-, or 12-bit), accuracy grades, and power-on reset behaviors. The LTSJ marking corresponds to this specific configuration. Other variants in the series include HI (mid-scale reset, 4.096V FS) and LX (external reference mode) options.

Replacement Considerations

Direct functional substitutes within the same package and specification profile are limited due to the unique combination of the LZ reset behavior and internal reference voltage. Cross-referencing with other LTC2632 variants requires verifying if mid-scale reset or external reference modes are acceptable alternatives.