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We report on the recent development of a low-noise analog front-end ASIC for hard X-ray and gamma-ray detectors. The ASIC aims for the readout of strip detectors utilizing silicon and cadmium telluride (CdTe) as detector materials. Each readout channel includes a charge-sensitive amplifier, band-pass filters and sample-and-hold circuit. It also includes a leakage current compensation circuit to accommodate...
X-ray CCDs have poor timing resolution of several seconds. Since the pixel rate is limited to keep readout noise low, we develop an application specific integrated circuit (ASIC) for multi-readout of X-ray CCDs in order to make the readout circuits small and the power consumption low. Our ASIC with the size of 3 mm times 3 mm has four channels, each channel converts the CCD outputs to 12 bits data...
A clock distribution network using inductively-loaded standing-wave oscillators is designed. Synchronization among oscillators is achieved through magnetic coupling. The 12GHz clock distribution network is prototyped in a 6M 0.18mum CMOS technology. A peak-to-peak jitter of 4.7ps is achieved on a 5times5 mesh structure, with a pitch of 200mum. The power consumption is 80mW at 0.9V.
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