DAC (Digital to Analog Converter) is empowering opposite innovation of ADC that creates simple yield proportionate to given computerized input. In the majority of the control and advanced handling framework needs DAC for intrusive with genuine world. Be that as it may, the majority of computerized controlling microchip & microcontroller don't have an on chip DAC coordinated fringe design. For such actualizing framework, an outside DAC chip is typically utilized however it diminishes effectiveness of framework, for example, control, cost, territory. This paper presents various type of digital to analog converters and previous work done in this domain.