Konstantin Stefanov, Rutherford Appleton Laboratoryp. 1 1 mm Level 1 metal Polyimide Φ2Φ2 Φ2Φ2 Φ1Φ1 Φ1Φ1 To wire bonds Baseline Design Single level metal ≈ 1 μm thick Al; Busline width ≈ 1 mm; For slow (1 MHz) column parallel readout; Contact holes to polySi gatesChannel stops 20 μm

Konstantin Stefanov, Rutherford Appleton Laboratoryp. 2 Φ1 Φ2 Level 1 metal Polyimide Level 2 metal Φ2 Φ1 To microstrip connector 1 mm Busline-free Design Same underlying Si/polySi structure as in the Baseline Design; Area for external connections ≈ 1 mm; Two-level metal ≈ 1 μm thick Al; Notes: 1.Contact holes in the area for external connections can be placed provided that there is no shorting between P1 and P2 by the first level metal. 2.To maximize conductor area and facilitate manufacture the contact holes along horizontal direction need not be every 2 nd pixel – every 4 th may be fine. 3.The same applies to the holes along the vertical direction as long as every gate is connected to the metal. Apertures for resistance matching

Konstantin Stefanov, Rutherford Appleton Laboratoryp. 3 Busline-free Design Optimization I

Konstantin Stefanov, Rutherford Appleton Laboratoryp. 4 Busline-free Design Optimization II

Konstantin Stefanov, Rutherford Appleton Laboratoryp. 5 RF Power Amplifier 1-50 MHz (100 W) 50  12.5  4  50  coax cables 2:1 200 Vpp On CPC-2 MB External Clock Delivery I 1  Termination and equalization 1  3.5:1 To CPC-2 clock pads Via multiple wire bonds 12.5  Following discussions with Colin Perry

Konstantin Stefanov, Rutherford Appleton Laboratoryp. 6 RF Power Amplifier 1-50 MHz (100 W) 50  coax cable 200 Vpp 25  On CPC-2 MB External Clock Delivery II 1  Termination and equalization 1  5:1 To CPC-2 clock pads Via multiple wire bonds Following discussions with Colin Perry