To provide an electronic circuit, an electro-optical device, and an
electronic apparatus, which are capable of producing digital signals
having predetermined output values in accordance with digital data. A bit
extending circuit 40 is constructed for producing 8-bit digital data in
order to change current Im of data line driving signals output from a
digital-to-analog converting circuit 30 in a manner of a high order
function with respect to 6-bit image data output from a controller.
Further, a single line driver 20 is constructed by connecting the bit
extending circuit 40 to an input side of the digital-to-analog converting
circuit 30.