MAX549ACPA

Digital To Analog Converters Overview

The MAX549ACPA+ 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 a maximum Total Unadjusted Error (TUE) of ±1 LSB, a typical operating current of 75µA per DAC at VDD = 2.5V, and a shutdown current of less than 1µA. The unit is housed in an 8-PDIP package and supports an operating temperature range of 0°C to +70°C.

Digital To Analog Converters Feature Summary

• Dual-channel architecture with independent shutdown capability for each DAC channel
• External reference input configuration allowing flexible full-scale output adjustment
• Double-buffered inputs enabling individual or simultaneous updates of input and DAC registers
• Internal power-on reset mechanism that clears all registers to zero upon initialization

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 control

Digital To Analog Converters Procurement Notes

Verify the component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'CPA+' corresponds to the 8-PDIP plastic package and RoHS compliance status as documented in the official datasheet. Ensure the ordering information matches the required temperature grade and pin configuration before finalizing procurement.

Digital To Analog Converters Selection Notes

Select the MAX549ACPA+ when a dual-channel 8-bit DAC with an external reference is required. This model differs from the MAX548A, which uses VDD as the reference, and the MAX550A, which is a single-channel device. Consider the unbuffered output impedance and settling time characteristics when designing the analog load circuitry for optimal accuracy.

Digital To Analog Converters Part Context

The MAX549ACPA+ belongs to the MAX548A/MAX549A/MAX550A family of low-power, single/dual, 8-bit voltage-output DACs. These devices are designed for portable and battery-powered applications due to their low power consumption and small package options. The family shares a common serial interface and architectural principles but varies in channel count and reference input configuration.

Digital To Analog Converters Replacement Considerations

Direct substitutes within the same family include the MAX548ACPA+ (uses VDD reference) and MAX550ACPA+ (single channel). Verify pin compatibility and functional differences regarding reference inputs and asynchronous load capabilities before substitution.