Patent ID: 11863149
Assignee: NOVATEK MICROELECTRONICS CORP.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A signal transmitter, comprising:
a plurality of driver slices, wherein each of the driver slices comprises:
a driving circuit, receiving an input signal and outputting an output signal;
a plurality of first transistors, wherein the first transistors are coupled in parallel between a power terminal of the signal transmitter and the driving circuit, and providing a first impedance according to signals on gate terminals of the first transistors; and
a plurality of second transistors, wherein the second transistors are coupled in parallel between a reference ground terminal of the signal transmitter and the driving circuit, and providing a second impedance according to signals on gate terminals of the second transistors,

a plurality of first selectors, respectively coupled to the gate terminals of the first transistors, wherein each of the first selectors selects one of the corresponding bias voltage and a first predetermined voltage to transmit to the gate terminal of each of the first transistors according to a first selection signal; and
a plurality of second selectors, respectively coupled to the gate terminals of the second transistors, wherein each of the second selectors selects one of the corresponding bias voltage and a second predetermined voltage to transmit to the gate terminal of each of the second transistors according to a second selection signal,
wherein each of the first transistors operates in a triode region when receives the corresponding bias voltage, and behaves as a first switch when receives the first predetermined voltage; and each of the second transistors operates in the triode region when receives the corresponding bias voltage, and behaves as a second switch when receives the second predetermined voltage.