MAX5821MEUA+

Digital To Analog Converters Overview

The MAX5821MEUA+ is a dual, 10-bit voltage-output digital-to-analog converter (DAC) featuring an I²C-compatible 2-wire serial interface. It operates from a single 2.7V to 5.5V supply with typical current consumption of 115µA at 3.6V and 135µA at 5.5V. The device includes internal precision rail-to-rail output buffers and settles to ±0.5LSB within 4µs. Static accuracy specifications include integral nonlinearity (INL) and differential nonlinearity (DNL) both guaranteed at ±0.5LSB. It supports three software-selectable power-down modes reducing current to less than 1µA and is available in an 8-pin µMAX package.

Digital To Analog Converters Feature Summary

• Dual-channel architecture with integrated resistor-string DACs and unity-gain output buffers
• I²C/SMBus-compatible 2-wire serial interface supporting clock rates up to 400kHz
• Schmitt-trigger buffered digital inputs for direct interfacing with optocouplers
• Three software-selectable power-down output impedances: high impedance, 1kΩ, and 100kΩ

Digital To Analog Converters Applications

• Digital gain and offset adjustments
• Programmable voltage and current sources
• Programmable attenuation circuits
• VCO and varactor diode control
• Battery-operated instrumentation

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and temperature range. Ensure the component meets RoHS compliance requirements for the intended application. Confirm availability through authorized distributors as stock levels fluctuate. Validate that the selected variant matches the required I2C address configuration via the ADD pin.

Digital To Analog Converters Selection Notes

Select this component when a low-power, dual-channel DAC with I2C connectivity is required. The 10-bit resolution and ±0.5LSB linearity suit moderate precision applications. Consider the 8-pin µMAX package for space-constrained designs. Verify that the external reference voltage range aligns with the system's supply capabilities.

Digital To Analog Converters Part Context

The MAX5821 belongs to the Maxim Integrated MAX582x family of low-power DACs. It serves as the 10-bit variant alongside the 8-bit MAX5820 and 12-bit MAX5822. All members share similar pinouts and interface protocols but differ in resolution and performance metrics. This specific part number denotes the industrial temperature grade version in the µMAX package.

Digital To Analog Converters Replacement Considerations

Direct substitutes within the same family include the MAX5820 (8-bit) and MAX5822 (12-bit). These parts maintain pin compatibility but offer different resolution characteristics. Verify that the alternative resolution meets the system's accuracy requirements before substitution.