MAX549AEPA

Digital To Analog Converters Overview

The MAX549AEPA 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 an R-2R ladder architecture with unbuffered outputs and supports a 10MHz, 3-wire serial interface compatible with SPI/QSPI and Microwire standards. Key electrical specifications include a maximum total unadjusted error (TUE) of ±1 LSB, a typical operating current of 150µA per DAC at VREF = +2.5V, and a shutdown current of less than 1µA. The component is housed in an 8-pin Plastic DIP package and is rated for an industrial temperature range of -40°C to +85°C.

Digital To Analog Converters Feature Summary

• Dual-channel configuration with independent shutdown capability for each DAC channel.
• External reference input allows flexibility in setting full-scale output voltages.
• Double-buffered inputs enable individual or simultaneous updating of DAC registers.
• Power-on reset mechanism initializes all internal registers to zero upon startup.

Digital To Analog Converters Applications

• Battery-powered systems requiring low power consumption
• VCXO control circuits
• Comparator-level settings
• GaAs amplifier bias control
• Digital gain and offset adjustment

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range (-40°C to +85°C) compared to the commercial 'C' variant. Confirm the 'P' suffix corresponds to the 8-pin Plastic DIP package. Ensure the datasheet version matches the required timing characteristics. Check for RoHS compliance status as indicated in the ordering information section.

Digital To Analog Converters Selection Notes

Select this component when a dual-channel 8-bit DAC with an external reference is required. The MAX549A differs from the MAX548A by using an external reference instead of VDD. Choose the 'E' suffix for industrial temperature applications. Consider the unbuffered output impedance if driving low-resistance loads directly.

Digital To Analog Converters Part Context

The MAX549AEPA belongs to the MAX548A/MAX549A/MAX550A family of low-power, single/dual, 8-bit voltage-output DACs. This series is designed for portable and battery-powered applications due to its low operating current and small package options. The MAX549A specifically provides dual channels with an external reference input, distinguishing it from the single-channel MAX550A and the VDD-referenced MAX548A.

Digital To Analog Converters Replacement Considerations

MAX548ACPA+ is listed as a direct substitute in distributor databases, though it uses VDD as the reference rather than an external one. Verify functional compatibility regarding reference input requirements before substitution.