Abstract
GOSSIPO-4 is a prototype chip featuring an array of high resolution Time to Digital Converters with a PLL control that has been taped out the 9th of August 2011. This prototype is the successor of GOSSIPO-3 test chip and the precursor of the 65k pixel chip TimePix3. The prototype is being developed to test a set of new features that will be used in TimePix3, including a 8 pixel structure sharing one fast oscillator with a new topology, a PLL to provide the control voltage to the oscillators, a custom fast counter and a new small-area cell library.
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