MAX549AEUA+T

Digital To Analog Converters Overview

The MAX549AEUA+T is a dual-channel, 8-bit voltage-output digital-to-analog converter (DAC) manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +2.5V to +5.5V supply and features an external reference input. The device utilizes a 10MHz, 3-wire serial interface compatible with SPI/QSPI and Microwire standards. Key electrical specifications include ±1LSB maximum total unadjusted error (TUE), typical operating current of 150µA per DAC at VREF = +2.5V, and shutdown current less than 1µA. The unit is housed in an 8-pin µMAX package and supports independent shutdown for each DAC channel.

Digital To Analog Converters Feature Summary

• Dual-channel architecture with independent shutdown capability
• External reference input for flexible full-scale output configuration
• Double-buffered inputs allowing simultaneous or individual register updates
• Power-on reset initializes all registers to zero

Digital To Analog Converters Applications

• Battery-powered systems
• VCXO control
• Comparator-level settings
• GaAs amplifier bias control
• Digital gain and offset control

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'EUA' confirms the -40°C to +85°C temperature range and µMAX package type. Confirm RoHS compliance status through official manufacturer documentation. Ensure the external reference voltage source impedance remains below 3Ω to maintain specified linearity performance.

Digital To Analog Converters Selection Notes

Select this component when a dual-channel DAC with low power consumption is required. The MAX549A specifically requires an external reference, unlike the MAX548A which uses VDD. Verify that the unbuffered output impedance of approximately 33.3kΩ is suitable for the intended load without requiring additional buffering stages.

Digital To Analog Converters Part Context

This part belongs to the MAX548A/MAX549A/MAX550A family of low-power, single/dual, 8-bit voltage-output DACs. The MAX549A variant is distinguished by its dual DAC channels and dedicated external reference pin, differentiating it from the MAX548A (internal VDD reference) and MAX550A (single channel).

Digital To Analog Converters Replacement Considerations

The MAX548AEUA+T serves as a functional substitute if internal VDD referencing is acceptable. The MAX550AEUA+T is an alternative for single-channel applications requiring asynchronous load functionality.