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公开(公告)号：US20140110566A1
公开(公告)日：2014-04-24
申请号：US14058247
申请日：2013-10-20
申请人： PRIMESENSE LTD.
发明人： Raviv Weber
IPC分类号： H03F1/52
摘要： A method for sensing includes connecting an input of a trans-impedance amplifier (TIA) to a first terminal of a sensor, which generates a current in response to an input signal that is incident on the sensor, the signal comprising pulses of a characteristic duration. A resistor is connected in series between a second terminal of the sensor and a power supply, which is set to drive the sensor at a selected voltage. A capacitor is connected to the second terminal in parallel with the sensor and the TIA and in series with the resistor. An upper limit is set on the current that is to be input to the TIA from the sensor, and respective values of the resistor and the capacitor are chosen, responsively to the characteristic duration of the pulses and the selected voltage, to prevent the current input to the TIA from exceeding the upper limit.
摘要翻译： 一种用于感测的方法包括将跨阻抗放大器（TIA）的输入端连接到传感器的第一端子，该传感器的第一端口响应入射在传感器上的输入信号产生电流，该信号包括特征持续时间的脉冲 。 电阻器串联连接在传感器的第二端子和电源之间，电源被设置成以选定的电压驱动传感器。 电容器与传感器和TIA并联连接到第二端子并与电阻器串联。 对要从传感器输入到TIA的电流设置上限，并且响应于脉冲的特征持续时间和所选择的电压来选择电阻器和电容器的各个值，以防止电流输入 到TIA超过上限。
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公开(公告)号：US09203356B2
公开(公告)日：2015-12-01
申请号：US14058247
申请日：2013-10-20
申请人： PRIMESENSE LTD.
发明人： Raviv Weber
摘要： A method for sensing includes connecting an input of a trans-impedance amplifier (TIA) to a first terminal of a sensor, which generates a current in response to an input signal that is incident on the sensor, the signal comprising pulses of a characteristic duration. A resistor is connected in series between a second terminal of the sensor and a power supply, which is set to drive the sensor at a selected voltage. A capacitor is connected to the second terminal in parallel with the sensor and the TIA and in series with the resistor. An upper limit is set on the current that is to be input to the TIA from the sensor, and respective values of the resistor and the capacitor are chosen, responsively to the characteristic duration of the pulses and the selected voltage, to prevent the current input to the TIA from exceeding the upper limit.
摘要翻译： 一种用于感测的方法包括将跨阻抗放大器（TIA）的输入端连接到传感器的第一端子，该传感器的第一端口响应入射在传感器上的输入信号产生电流，该信号包括特征持续时间的脉冲 。 电阻器串联连接在传感器的第二端子和电源之间，电源被设置成以选定的电压驱动传感器。 电容器与传感器和TIA并联连接到第二端子并与电阻器串联。 对要从传感器输入到TIA的电流设置上限，并且响应于脉冲的特征持续时间和所选择的电压来选择电阻器和电容器的各个值，以防止电流输入 到TIA超过上限。
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