We have developed two radiation-hard ASICs for optical data transmission inthe ATLAS pixel detector at the LHC at CERN: a driver chip for a VerticalCavity Surface Emitting Laser (VCSEL) diode for 80 Mbit/s data transmissionfrom the detector, and a Bi-Phase Mark decoder chip to recover the control dataand 40 MHz clock received optically by a PIN diode. We have successfullyimplemented both ASICs in 0.25 mm CMOS technology using enclosed layouttransistors and guard rings for increased radiation hardness. We presentresults from circuits of final design and from irradiation studies with 24 GeVprotons up to 80 Mrad (2.6 x 10^15 p/cm^2).
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机译：我们在欧洲核子研究中心（CERN）的LHC的ATLAS像素检测器中开发了两种用于光数据传输的抗辐射ASIC：用于从检测器传输80 Mbit / s数据的垂直腔表面发射激光（VCSEL）二极管的驱动器芯片和双相标记解码器芯片以恢复由PIN二极管光学接收的控制数据和40 MHz时钟。我们已经使用封闭的布局晶体管和保护环成功地在0.25 mm CMOS技术中实现了这两种ASIC，以提高辐射硬度。我们提供了来自最终设计电路的结果以及来自使用高达80 Mrad（2.6 x 10 ^ 15 p / cm ^ 2）的24 GeV质子的辐照研究的结果。
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