Considering the R&D for upgrading the K^(0)_(L) andμdetectors in the Belle II experiment using a scintillator and silicon pho-tomultiplier(SiPM),we designed a compact high-speed and low-noise preamplifier.The pre...Considering the R&D for upgrading the K^(0)_(L) andμdetectors in the Belle II experiment using a scintillator and silicon pho-tomultiplier(SiPM),we designed a compact high-speed and low-noise preamplifier.The preamplifier demonstrated a good gain stability,bandwidth of 426 MHz,baseline noise level ofσ≈0.6 mV,dynamic range of up to170 mV of the input signal amplitude,good time resolution of 20 ps,and it can be comprehensively applied to SiPMs.Adopting pole-zero-cancelation in the preamplifier reduces both the rise and fall times of the SiPM signal,which can significantly improve the time resolution and reduce the pile-up when using a large SiPM or an array of SiPMs.Various combinations of the preamplifier and several types of SiPMs demonstrated time resolutions better than 50 ps for most cases;when the number of detected photons was larger than 60,a time resolution of approximately 25 ps was achieved.展开更多
A programmable 14-bit 1-GS/s current-steering digital-to-analog converter is presented. It features a selectable interpolation rate （2x/4x/8x） with a programmable interpolation filter. To improve the high-frequency ...A programmable 14-bit 1-GS/s current-steering digital-to-analog converter is presented. It features a selectable interpolation rate （2x/4x/8x） with a programmable interpolation filter. To improve the high-frequency performance, a ＂fast switching＂ technique that adds additional biasing to the current-switch is adopted. The datadependent clock loading effect is also minimized with an improved switch control by using a double latch. This DAC is implemented in 65 nm CMOS technology with an active area of 1.56 mm2. The measured SFDRs are 70.05 dB at 250 MS/s for 120.65 MHz input sine-wave signal and 64.24 dB at 960 MS/s for 56.3 MHz input sine-wave signal, respectively.展开更多
基金This work was partially supported by the National Key R&D Program of China(No.2022YFA1601903)the National Natural Science Foundation of China(Nos.11925502,11961141003,and 12175041)the Strategic Priority Research Program of the CAS(No.XDB34030000).
文摘Considering the R&D for upgrading the K^(0)_(L) andμdetectors in the Belle II experiment using a scintillator and silicon pho-tomultiplier(SiPM),we designed a compact high-speed and low-noise preamplifier.The preamplifier demonstrated a good gain stability,bandwidth of 426 MHz,baseline noise level ofσ≈0.6 mV,dynamic range of up to170 mV of the input signal amplitude,good time resolution of 20 ps,and it can be comprehensively applied to SiPMs.Adopting pole-zero-cancelation in the preamplifier reduces both the rise and fall times of the SiPM signal,which can significantly improve the time resolution and reduce the pile-up when using a large SiPM or an array of SiPMs.Various combinations of the preamplifier and several types of SiPMs demonstrated time resolutions better than 50 ps for most cases;when the number of detected photons was larger than 60,a time resolution of approximately 25 ps was achieved.
基金Project supported by the National High Technology Research and Development Program of China(No.2009AA011605)the National Natural Science Foundation of China(No.61076027)
文摘A programmable 14-bit 1-GS/s current-steering digital-to-analog converter is presented. It features a selectable interpolation rate （2x/4x/8x） with a programmable interpolation filter. To improve the high-frequency performance, a ＂fast switching＂ technique that adds additional biasing to the current-switch is adopted. The datadependent clock loading effect is also minimized with an improved switch control by using a double latch. This DAC is implemented in 65 nm CMOS technology with an active area of 1.56 mm2. The measured SFDRs are 70.05 dB at 250 MS/s for 120.65 MHz input sine-wave signal and 64.24 dB at 960 MS/s for 56.3 MHz input sine-wave signal, respectively.
