6-Bit Charge Scaling DAC and SAR ADC
A system which processes a signal is a combination of a number of mixed signal circuits, which require both analog and digital domain functions. To change from one domain to other, Analog-to-Digital (A/D) and Digital-to-Analog (D/A) converters are used. In this paper, 1.1V, 6-bit charge scaling DAC using split array is designed and simulated. This design consists of parallel array of binary weighted linear capacitors to achieve high resolution as compared to other types of DACs. A 2:1 multiplexer is designed to act as a switch and differential amplifier is designed to amplify the convoluted inputs in charge scaling architecture.