Patent ID: 8476975
Filing Date: 2013-07-02
Classification: H03F

Abstract:
1. An operational amplifying device comprising: an input stage for receiving and processing an input voltage to output an amplified voltage; and an output stage electrically connected to the input stage in series, wherein the output stage comprises: a first switch configured to turn on for transferring the amplified voltage; a first output buffer electrically connected in series with the first switch for receiving and processing the amplified voltage through the first switch such that the first output buffer outputs a first buffered voltage to a first resistor array; a second switch configured to turn on for transferring the amplified voltage; and a second output buffer, wherein the second switch and the second output buffer are connected in parallel with the first switch and the first output buffer, wherein the second output buffer is electrically connected in series with the second switch for receiving and processing the amplified voltage through the second switch such that the second output buffer outputs a second buffered voltage to a second resistor array; wherein the second switch is turned off when the first switch is turned on such that the amplified voltage is transferred through the first switch and the first output buffer to the first resistor array for gamma correction.