SYSTEMS AND METHODS FOR CALIBRATING IMPEDANCE OF A LOW POWER VOLTAGE-MODE TRANSMITTER DRIVER

摘要

Systems for calibrating impedances caused by a first component and a second component of a voltage-mode transmitter driver are described herein. The first component includes a first transistor and a first resistor connected to the first transistor, wherein the first component is connected to a voltage source and an output end of the voltage-mode transmitter driver, respectively. The second component includes a second transistor and a second resistor connected to the second transistor, wherein the second component is connected to the output end of the voltage-mode transmitter driver, and a third transistor, respectively. A first gate of the third transistor is applied with a first tunable gate voltage, and the first tunable gate voltage is configured to be tuned to calibrate a first impedance between the output end and a ground to match with a second impedance between the voltage source and the output end.