Patent Number: 6,297,664

Title: Accurate active termination device

Abstract: An active precision termination of the type incorporated in a voltage regulator for feeding the lines of an external bus is presented. Each termination includes a matching impedance connected in series to a switch formed by a MOS transistor, including a cell formed by a plurality of circuit branches provided in parallel and coupled to a unique output terminal. Each branch includes an input coupled to the series of the impedance and of the switch and receiving a control voltage signal. The body terminal of each MOS transistor receives a corresponding control signal via an inverter, whereas the control terminal of each MOS transistor receives a corresponding control voltage signal.

Inventors: Galli; Giovanni (Galati Marina, IT)

Assignee: STMicroelectronics S.r.l.

International Classification: G06F 13/40 (20060101); H03K 017/16 (); H03K 019/003 ()

Expiration Date: 10/02/2018