MAX5822MEUA+

Digital To Analog Converters Overview

The MAX5822MEUA+ is a dual, 12-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 and draws 135µA at VDD = 5.5V. The device includes internal precision rail-to-rail output buffers and settles to ±0.5LSB within 4µs. It supports three software-selectable power-down modes with impedances of 100kΩ, 1kΩ, or high impedance, reducing current consumption to less than 1µA. The part is specified over the extended temperature range of -40°C to +85°C and is housed in an 8-pin µMAX package.

Digital To Analog Converters Feature Summary

• Dual-channel architecture with integrated unity-gain output buffers
• I²C/SMBus-compatible 2-wire serial interface supporting up to 400kHz clock rates
• Three software-selectable power-down modes for low-power operation
• Schmitt-trigger buffered inputs for direct interfacing with optocouplers

Digital To Analog Converters Applications

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

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix 'MEUA+' against official documentation to confirm the factory-programmed slave address configuration. Ensure that the required operating temperature range aligns with the -40°C to +85°C specification. Confirm that the 8-pin µMAX package dimensions match the PCB footprint requirements before finalizing procurement orders.

Digital To Analog Converters Selection Notes

Select this component when a dual-channel DAC with low power consumption and I²C connectivity is required. The MEUA+ variant offers a specific hardware-defined slave address distinct from the LEUA+ version. Consider the 12-bit resolution and 4µs settling time for applications requiring moderate speed and accuracy without external buffering components.

Digital To Analog Converters Part Context

The MAX5822 series includes 8-bit (MAX5820) and 10-bit (MAX5821) variants offering similar functionality with lower resolution. The MAX5822 provides 12-bit performance with resistor-string architecture ensuring monotonicity. The MEUA+ designation indicates a specific factory-set slave address configuration compared to other suffixes in the family.

Digital To Analog Converters Replacement Considerations

Direct substitutes include the MAX5822LEUA+ which shares identical electrical specifications but utilizes a different factory-programmed slave address determined by the ADD pin logic.

Digital To Analog Converters FAQ

What is the default state of the outputs upon power-up?

The internal Power-On Reset (POR) circuit initializes the DAC registers to zero scale and powers down the device, pulling the outputs to GND through a 100kΩ termination resistor.

How does the device handle digital noise feedthrough?

When an address mismatch is detected, the serial interface disconnects the SCL signal from the core circuitry to minimize digital feedthrough on the static output.

Can multiple MAX5822 devices share the same bus?

Yes, up to four devices can share a single bus by utilizing the ADD pin to select between two possible values for the least significant bit of the 7-bit slave address.