The Pan-STARRS telescope consists of an array of smaller mirrors viewed by a Gigapixel arrays of CCDs. These focal planes employ Orthogonal Transfer CCDs (OTCCDs) to allow on-chip image stabilization. Each OTCCD has advanced logic features that are controlled externally. A CMOS Interface Device for High Voltage has been developed to provide the appropiate voltage signal levels from a readout and control system designated STARGRASP. OTCCD chip output levels range from -3.3V to 16.7V, with two different output drive strenghts required depending on load capacitance (50pF and 1000pF), with 24mA of drive and a rise time on the order of 100ns. Additional testing ADC structures have been included in this chip to evaluate future functional additions for a next version of the chip.
@article{arxiv.0806.0223,
title = {High Voltage CMOS Control Interface for Astronomy - Grade Charged Coupled Devices},
author = {Elena Martin and Gary Varner and Aaron Koga and Larry Ruckman and Peter Onaka and John Tonry and Aaron Lee},
journal= {arXiv preprint arXiv:0806.0223},
year = {2008}
}