Combined resistance circuit and variable gain amplifier circuit
Abstract:
A combined resistance circuit 2A includes a first circuitry 20A provided between a first end 2a and a second end 2b. This first circuitry 20A includes a resistor R1 provided between a node N11 and a node N12, a resistor R2 provided between the node N12 and a node N13, a resistor R3 provided between the node N13 and a node N14, a resistor R4 provided between the node N14 and the node N11, a resistor R5 provided between the node N11 and the node N13, a switch SW0 provided in series to the resistor R4 between the node N14 and the node N11, and a switch SW1 provided in series to the resistor R2 between the node N12 and the node N13. The node N12 is connected to the first end and the node N14 is connected to the second end.
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