LTC2636CDE-LZ10#TRPBF

Overview

The LTC2636CDE-LZ10#TRPBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. 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 2.7V to 5.5V supply and communicates via a 3-wire SPI/MICROWIRE-compatible serial interface supporting clock rates up to 50MHz. It includes double-buffered data latches, rail-to-rail output buffers, and guaranteed monotonicity over the operating range. This specific variant resets to zero-scale upon power-up.

Feature Summary

• Octal 10-Bit Resolution: Provides eight independent DAC channels with ±1 LSB maximum integral nonlinearity error.
• Integrated Precision Reference: Features a built-in 2.5V full-scale reference with low drift of 10ppm/°C.
• Zero-Scale Power-On Reset: Automatically clears outputs to zero-scale upon power application for consistent initialization.
• Ultralow Crosstalk: Achieves less than 2.4nV•s crosstalk between adjacent DAC channels.

Applications

• Process Control and Industrial Automation
• Portable Equipment
• Automotive Systems
• Optical Networking

Procurement Notes

Verify the package type matches the design requirements; this part uses a 14-lead DFN package. Confirm that the commercial temperature grade (0°C to 70°C) aligns with the system's environmental constraints. Ensure the power supply sequencing respects the REF pin voltage limits relative to VCC during startup to prevent damage.

Selection Notes

Select this component when eight independent voltage outputs are required in a compact form factor. The LZ suffix indicates a zero-scale reset behavior, which is critical if downstream circuits must remain inactive during power-up. Compare against LMI/LMX variants if mid-scale reset is preferred, or H-series parts if a 4.096V full-scale range is necessary.

Part Context

This part belongs to the LTC2636 family, which offers 8-, 10-, and 12-bit resolutions in both DFN and MSOP packages. The 'L' designation specifies the 2.5V internal reference configuration, while 'Z' defines the zero-scale power-on reset mode. The 'C' grade denotes commercial temperature operation, distinguishing it from industrial (-40°C to 85°C) and automotive (-40°C to 125°C) grades.

Replacement Considerations

Direct substitutes within the same family include LTC2636CDE-LZ8 (8-bit) and LTC2636CDE-LZ12 (12-bit), which share identical pinouts and interfaces but differ in resolution. For external reference applications, consider the LMX series variants.