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Differential circuit with a dynamic bias current for producing an exponential or a square-law transfer characteristic
Differential circuit with a dynamic bias current for producing an exponential or a square-law transfer characteristic
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机译:具有动态偏置电流的差分电路,用于产生指数或平方律传递特性
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摘要
In a differential circuit including first and second transistors, a constant current circuit causes a constant current to flow through the first transistor. A variable current circuit causes a variable current to flow through the second transistor. A differential input voltage is given to drive the first and the second transistors and to produce an output signal in the form of an output current which may be either a differential output current across two output electrodes or a variable output current flowing through an output electrode. Each of the first and the second transistors may be bipolar transistors or MOSFET's. A relationship between the differential input voltage and the output signal is specified by a peculiar characteristic dependent on the bipolar transistors or the MOSFET's. Therefore, the differential circuit may be incorporated in an LSI circuit.
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