An 8-bit current-steering digital to analog converter

In this paper, an 8-bit current steering digital-to-analog converter is proposed. The digital-to-analog converter contained four sets of current mirrors with different weight. The digital-to-analog converter was implemented using TSMC 0.35 μm, 2P4M CMOS process. The average INL and DNL are 0.27 LSB and 0.32 LSB, respectively. At the sample rate of 100 MHz and supply voltage of 3.3 V, the DAC consumed about 27.6 mW. The SFDR was 50.9 dB. The core size is 0.024 mm ². The digital-to-analog converter of this construction consumed less power and chip area. It is suitable for portable device application.