Design of a Pipeline ADC for PET Imaging Application

Based on the multi-channel front-end readout circuit and high-speed high-resolution ADC of high performance PET front-end electron micro system structure,a 12 bit 10 MHz pipeline ADC is designed.The whole circuit consist of S/H circuit,MDAC circuit,Sub_ADC circuit,delay alignment circuit,digital correction circuit,two-phase non-overlap clock circuit.The whole circuit is designed in TSMC 0.18 μm mixed signal CMOS technology.Simulation results show that,pipeline ADC has-0.6832/0.5994LSB DNL,-0.7997/0.7576LSB INL,62.1406 dB SNR,and 10.03 bit ENOB.The pipeline ADC presented in this paper satisfy the design requirements of the system.