Transmitter circuit with ringing suppression

A transmitter circuit with ringing suppression, applicable to a controller area network (CAN) bus, comprising:

• a CAN bus driver stage, receiving a transmit data (TXD) signal in the CAN bus, and generating a pair of differential signals, including a CAN high voltage signal and a CAN low voltage signal;
• a first operational transconductance amplifier, being electrically connected with the CAN bus driver stage and receiving the CAN high voltage signal;
• and
• a second operational transconductance amplifier, being electrically connected with the CAN bus driver stage and receiving the CAN low voltage signal;
• wherein a common mode voltage is provided to the first operational transconductance amplifier and the second operational transconductance amplifier, and a control signal (SIC_ON) is applied to the first operational transconductance amplifier and the second operational transconductance amplifier, such that when the control signal (SIC_ON) is logically high, the first operational transconductance amplifier and the second operational transconductance amplifier actively pulls the CAN high voltage signal and the CAN low voltage signal to be equal to the common mode voltage so as to suppress a ringing phenomenon occurring in the CAN bus.