Khurram Shahzad

Low-power 8-bit Pipelined Adc with Current Mode Mdac: (Multiplying Digital-to-analog Converter) Khurram Shahzad

In this thesis work we design and optimize a 8-bit pipelined ADC for low-power. The ADC has stage resolution of 1.5-bit and employ current mode multiplying digital-to-analog converter (MDAC). The main focus is to design and optimize the MDAC. We design and optimize the MDAC circuit for the best possible effective number of bits (ENOB), speed and power consumption. Each of the first six stages consisting of Sample-and-Hold, 1.5-bit flash ADC and MDAC is realized at the circuit level. The last stage consisting of 2-bit flash ADC is also realized at circuit level. The delay logic for synchronization is implemented in Verilog-A and MATLAB. A first order digital error-correction algorithm is implemented in MATLAB. The design is simulated in UMC 0.18?m technology in Cadence environment.