The MAX5822LEUA+ is a 12-bit dual voltage-output DAC with I²C interface. Two independent DAC channels in an 8-uMAX/uSOP package provide two analog outputs. Output type is voltage-buffered — the DAC output drives a resistive or capacitive load directly without an external op-amp. Architecture is a string DAC topology, which gives monotonic performance and low glitch energy, important when the output feeds a precision reference or a servo loop that can't tolerate non-monotonic steps.
Integration note — I²C bus and reference
Data interface is I²C — two wires (SCL, SDA) plus address pin(s) for bus sharing. Reference type is external: you supply the voltage reference at the REF pin. Differential output is No — each channel is single-ended, referenced to AGND. The INL/DNL spec is ±2 LSB / ±1 LSB max, which is typical for a 12-bit string DAC; integral linearity error stays within 2 LSB across the code range, so the transfer curve is straight enough for most set-point and trim applications.