随着无线通信标准越来越多,应用于各种频带的前端电路设计也越来越广泛,依据不同的国家,不同的需求,设计规格要求也渐渐多样化。文章主要针对应用于WIMAX(World-wide Interoperability for Microwave Access全球微波存取互通)频带的前...随着无线通信标准越来越多,应用于各种频带的前端电路设计也越来越广泛,依据不同的国家,不同的需求,设计规格要求也渐渐多样化。文章主要针对应用于WIMAX(World-wide Interoperability for Microwave Access全球微波存取互通)频带的前端电路设计进行了介绍。展开更多
Integrated circuits of deep submicron(DSM) CMOS technology are advantageous in volume density, power consumption and thermal noise for multichannel particle detection systems,but there are challenges in the front-end ...Integrated circuits of deep submicron(DSM) CMOS technology are advantageous in volume density, power consumption and thermal noise for multichannel particle detection systems,but there are challenges in the front-end circuit design.In this paper,we present a 0.18μm CMOS front-end readout circuit for low noise CdZnTe detectors in tens of pF capacitance.Solutions to the noise and gate leak problems in DSM technologies are discussed in detail.A prototype chip was designed,with a charge sensitive preamplifier,a 4th order semi-Gaussian shaper and several output drivers.Test results show that the chip has an equivalent noise charge of 164 e,without connecting it to a detector,with an integral nonlinearity of<0.21%and differential nonlinearity of<3.75%.展开更多
基金supported by the National Natural Science Foundation of China (No.61006021)
文摘Integrated circuits of deep submicron(DSM) CMOS technology are advantageous in volume density, power consumption and thermal noise for multichannel particle detection systems,but there are challenges in the front-end circuit design.In this paper,we present a 0.18μm CMOS front-end readout circuit for low noise CdZnTe detectors in tens of pF capacitance.Solutions to the noise and gate leak problems in DSM technologies are discussed in detail.A prototype chip was designed,with a charge sensitive preamplifier,a 4th order semi-Gaussian shaper and several output drivers.Test results show that the chip has an equivalent noise charge of 164 e,without connecting it to a detector,with an integral nonlinearity of<0.21%and differential nonlinearity of<3.75%.
