Transmitter circuit

Abstract

A transmitter circuit includes an impedance adjusting circuit and multiple driver circuits. The impedance adjusting circuit includes a first impedance adjusting circuit and a second impedance adjusting circuit. The first impedance adjusting circuit includes a first replica driving unit, and is configured to control an output impedance of the first replica driving unit to a first impedance value. The second impedance adjusting circuit includes a second replica driving unit, and is configured to control an output impedance of the second replica driving unit to a second impedance value different from the first impedance value. The driving units respectively includes multiple standard driving units. Each standard driving unit is configured to receive a corresponding one of a first impedance adjusting signal and a second impedance adjusting signal to be set at a first impedance value or a second impedance value.

Dependencies are inferred from the claim text.