A low-power 14-bit 150MS/s analog-to-digital converter(ADC) is presented for communication applications.Range scaling enables a maximal 2-Vp-p input with a single-stage opamp adopted.Opamp and capacitor sharing betwee...A low-power 14-bit 150MS/s analog-to-digital converter(ADC) is presented for communication applications.Range scaling enables a maximal 2-Vp-p input with a single-stage opamp adopted.Opamp and capacitor sharing between the first multiplying digital-to-analog converter(MDAC)and the second one reduces the total opamp power further.The dedicated sample-andhold amplifier(SHA) is removed to lower the power and the noise.The blind calibration of linearity errors is proposed to improve the performance.The prototype ADC is fabricated in a 130 nm CMOS process with a 1.3-V supply voltage.The SNDR of the ADC is 71.3 dB with a 2.4 MHz input and remains 68.5 dB for a 120 MHz input.It consumes 85 mW,which includes 57 mW for the ADC core,11 mW for the low jitter clock receiver and 17 mW for the high-speed reference buffer.展开更多
The tobacco pests and diseases in major flue-cured tobacco production areas of Shibing County were investigated, and the corresponding control counter- measures were put forward. The results showed that the common pes...The tobacco pests and diseases in major flue-cured tobacco production areas of Shibing County were investigated, and the corresponding control counter- measures were put forward. The results showed that the common pests and diseases, such as tobacco aphid, tobacco budworm, TMV, CMV, PVY, bacterial wilt and black shank, had occurred in flue-cured tobacco production in Shibing County.展开更多
基金supported by the Major National Science & Technology Program of China under Grant No.2012ZX03004004-002National High Technology Research and Development Program of China under Grant No. 2013AA014302
文摘A low-power 14-bit 150MS/s analog-to-digital converter(ADC) is presented for communication applications.Range scaling enables a maximal 2-Vp-p input with a single-stage opamp adopted.Opamp and capacitor sharing between the first multiplying digital-to-analog converter(MDAC)and the second one reduces the total opamp power further.The dedicated sample-andhold amplifier(SHA) is removed to lower the power and the noise.The blind calibration of linearity errors is proposed to improve the performance.The prototype ADC is fabricated in a 130 nm CMOS process with a 1.3-V supply voltage.The SNDR of the ADC is 71.3 dB with a 2.4 MHz input and remains 68.5 dB for a 120 MHz input.It consumes 85 mW,which includes 57 mW for the ADC core,11 mW for the low jitter clock receiver and 17 mW for the high-speed reference buffer.
文摘The tobacco pests and diseases in major flue-cured tobacco production areas of Shibing County were investigated, and the corresponding control counter- measures were put forward. The results showed that the common pests and diseases, such as tobacco aphid, tobacco budworm, TMV, CMV, PVY, bacterial wilt and black shank, had occurred in flue-cured tobacco production in Shibing County.
