Front end electronics @ low Temperature Parallel processing of analog signals ■ Time continuous filtering ■ Time discrete filtering 2. Readout strategies ■ Multiplexing ■ Readout chain per channel 3. Complexity of frontend ASICS ■ Preamplification ■ Signal Shaping ■ S&H and further amplification ■ Multiplexer ■ ADC, etc. 4. Expertise @ MPE, potential contributions ■ ASICs operated @ 30 K to R.T. ■ Test facilities Lothar Strüder SRON, Utrecht 26.10.2004

The XEUS WFI Lothar Strüder SRON, Utrecht 26.10.2004

Prototype matrices Ceramic Hybrid 64 x 64 pixel arrays with 75 x 75 mm2 pixel size Complete set of control & readout electronics Ceramic Hybrid Lothar Strüder SRON, Utrecht 26.10.2004

Energy resolution of DEPMOSFET arrays T = - 35o C Energy resolution: 126 eV FWHM @ Mn-Ka Line corresponding to 5.8 e- ENC @ 400 frames per second Lothar Strüder SRON, Utrecht 26.10.2004

World record of room temperature spectroscopy Recorded @ τ = 6 µs, continuous signal shaping, single pixel with 75 x 75 µm 2 Lothar Strüder SRON, Utrecht 26.10.2004

Imaging Illumination from backside Baffle: 300 mm thick silicon Minimal structure size: 150 mm Exposure ca. 100000 frames Readout speed: 400 fps Contour plot from ADU maps Hitmap with 100 ADU threshold Lothar Strüder SRON, Utrecht 26.10.2004

Frontend ASIC‘s – CAMEX block diagram Lothar Strüder SRON, Utrecht 26.10.2004

Signal Filtering - CDS weighting function Lothar Strüder SRON, Utrecht 26.10.2004

Signal Filtering – triangular shaping (integration) What filter function leads to the best SNR ? with a given measurement time with real detector signals with real noise contributions with a practical ASIC implementation (power constrain, ktc reset noise ...) Lothar Strüder SRON, Utrecht 26.10.2004

Signal Filtering – CDS & shaping time Lothar Strüder SRON, Utrecht 26.10.2004

Frontend ASIC‘s in Use CMX132 (CCD) CMXDUO (CCD) CMX64G (DEPFETs) SWITCHER II (DEPFETs) CURO (DEPFETs) DRAGO-ASIC (SDD) SYS48 (SDD) developed in cooperation with Politecnico di Milano & INFN University Bonn Ingenieurbuero Buttler Lothar Strüder SRON, Utrecht 26.10.2004

Test facilities at the MPE 1. Test facility PANTER Length: 130 m, big vacuum vessel (4 x 4 x 9 m3) Energy bandwidth: 178 eV to 17.5 keV Flat fields and pencil beams High monocromacy (transmission gratings, crystal monocromater ...) Lothar Strüder SRON, Utrecht 26.10.2004

Test facilities at MPE 2. The test facilities PUMA ROESTI CALIFA Lothar Strüder SRON, Utrecht 26.10.2004

Potential MPE contributions to the European cryogenic activities 1. Cooperation in the field of cryogenic frontend electronics (ASIC preamp, shaper, S&H, ADC, DAQ, Sequencing, ...) 2. Testing of ``cold electronics´´ and test of devices and systems (supplying test facilities) 3. MPE does not have plans to develop own cryogenic detectors, but . . . Lothar Strüder SRON, Utrecht 26.10.2004

Frontend ASIC‘s - FTD ASIC The FTD ASIC is a multichannel readout ASIC For use with asynchronous detectors like SDD‘s The ASIC targets detectors with a „small“ number of pixels (like multichannel drift detectors) Includes CRRC shapers in parallel architecture Variable shaping time allows application specific trade-off between count rate and noise MCDRIFT FTD analog output signals Lothar Strüder SRON, Utrecht 26.10.2004

Frontend ASIC‘s - CAMEX CAMEX is a multichannel readout ASIC For use with synchronous detectors like CCD and DEPFET PIXEL Filtering carried out in parallel architecture S&H stage and output serialiser Integrated programable timing generator (modular and low pincount) Cascadeable CCD PHI signals clk CMX CMX analog output signals Lothar Strüder SRON, Utrecht 26.10.2004