公开(公告)号：US20110148522A1

公开(公告)日：2011-06-23

申请号：US12646674

申请日：2009-12-23

申请人： Huan-Shang Tsai ,  Yong K. Yim

发明人： Huan-Shang Tsai ,  Yong K. Yim

IPC分类号： H03F3/45

CPC分类号： H03F3/087

摘要： Consistent with the present disclosure, a “dummy” transimpedance amplifier (dummy TIA) is provided on a substrate along with one or more other transimpedance amplifiers (TIAs) that are connected to photodiodes and output voltage signals for further processing. Typically, the dummy TIA is not connected to a photodiode and does not supply a useful output. The dummy TIA, however, is subject to the same processing and temperature variations as the other TIAs, and, as a result, the voltage on the dummy TIA inverting input will be the same or substantially the same as that of the other TIAs. Thus, by sensing the dummy TIA inverting input voltage, an appropriate photodiode bias can be obtained without direct measurement of the voltage on the inverting inputs of the other TIAs.

摘要翻译： 根据本公开，与衬底连接的一个或多个其他跨阻放大器（TIA）一起提供“虚拟”跨阻​​抗放大器（虚拟TIA），其连接到光电二极管并输出电压信号用于进一步处理。 通常，虚拟TIA不连接到光电二极管，并且不提供有用的输出。 然而，虚拟TIA受到与其他TIA相同的处理和温度变化，因此，虚拟TIA反相输入端的电压将与其他TIA的电压相同或基本相同。 因此，通过感测伪TIA反相输入电压，可以获得适当的光电二极管偏置，而不需要直接测量其他TIA的反相输入端的电压。

公开(公告)号：US07961053B1

公开(公告)日：2011-06-14

申请号：US12646674

申请日：2009-12-23

申请人： Huan-Shang Tsai ,  Yong K. Yim

发明人： Huan-Shang Tsai ,  Yong K. Yim

IPC分类号： H03F3/08

CPC分类号： H03F3/087

摘要： Consistent with the present disclosure, a “dummy” transimpedance amplifier (dummy TIA) is provided on a substrate along with one or more other transimpedance amplifiers (TIAs) that are connected to photodiodes and output voltage signals for further processing. Typically, the dummy TIA is not connected to a photodiode and does not supply a useful output. The dummy TIA, however, is subject to the same processing and temperature variations as the other TIAs, and, as a result, the voltage on the dummy TIA inverting input will be the same or substantially the same as that of the other TIAs. Thus, by sensing the dummy TIA inverting input voltage, an appropriate photodiode bias can be obtained without direct measurement of the voltage on the inverting inputs of the other TIAs.

摘要翻译： 根据本公开，与衬底连接的一个或多个其他跨阻放大器（TIA）一起提供“虚拟”跨阻​​抗放大器（虚拟TIA），其连接到光电二极管并输出电压信号用于进一步处理。 通常，虚拟TIA不连接到光电二极管，并且不提供有用的输出。 然而，虚拟TIA受到与其他TIA相同的处理和温度变化，因此，虚拟TIA反相输入端的电压将与其他TIA的电压相同或基本相同。 因此，通过感测伪TIA反相输入电压，可以获得适当的光电二极管偏置，而不需要直接测量其他TIA的反相输入端的电压。