A 6-bit digital to analogue converter based on current mirrors

In this article, a digital to analogue converter (DAC) based on multi-weighted current sources is proposed. This research requires only three kinds of current sources for a 6-bit DAC. The proposed DAC is implemented by 0.18m CMOS technology. The post-layout simulations of integral nonlinearity and differential nonlinearity are 0.076 and 0.099LSB, respectively. The core area of the chip is 640m ². The DAC consumes 3.5mW at the sample rate of 1.6GHz with a supply voltage of 1.8V. The specifications of the proposed DAC make it suitable for a portable device.