Muncy, Geissler, Olds & Lowe, P.C.
Impedance calibration device and method
An impedance calibration device includes: a variable impedance, an operational unit, an analog-digital converter, and a controller. The operational unit receives a first analog signal and a second analog signal, and performs a difference operation to generate an output voltage. The analog-digital converter generates an adjustment code according to the output voltage. The controller is coupled to the analog-digital converter and the variable impedance, and adjusts a resistance value of the variable impedance according to the adjustment code.
Realtek Semiconductor Corp.
H
H03K
inventional
Jian-Ru Cheng-Pang Che-Wei
Lin Chan Chang