J. Phys. IV France 12 (2002) Pr3-203
A 4.2 K readout channel in a standard 0.7 m CMOS process for a photoconductor array cameraY. Creten, O. Charlier, P. Merken, J. Putzeys and C. Van Hoof
Imec MCP-DET, Kapeldreef 75, 3001 Heverlee, Belgium
The cryogenic design of a cold CMOS readout channel to be used in the Photoconductor Array Camera and Spectrometer (PACS) aboard the Herschel Space Observatory (HSO, formerly called FIRST) , is presented. Robust architectures and optimized sizing reduce the effect of cryogenic anomalities on the circuit. Simulation results and tests, both at room temperature and 4 K show a non-linearity <2%, a hysteresis of <5mV and noise < 100nV/Hz 1/2 @ 30Hz.
© EDP Sciences 2002