The MAX539BCSA+ is a +5V, low power, voltage output, serial 12bit digital to analogue converter (DAC) in 8 pin NSOIC package. This DAC specified for single +5V power supply operation, It uses an "inverted" R-2R ladder network with a single supply CMOS op-amp to convert 12bit digital data to analogue voltage levels. This device use a three-wire serial interface that is compatible with SPI, QSPI (CPOL = CPHA = 0) and Microwire standards. The device's buffer at a gain of +2. It is trimmed for offset voltage, gain and linearity.