Telecommunication terminal with voltage controller having a phase-shifting component and a feedback path

US5714872A · kind A · utility

Assignee

• U.S. Philips Corporation · US

Inventors

• Emil Heimerl · Schwabach, DE
• Josef Einzinger · Spalt, DE
• Jurgen Hauenschild · Wendelstein, DE

Key dates

• Filing date: Jun 14, 1996
• Grant date: Feb 3, 1998
• Expiry date: Jun 14, 2016

Classification

• Technology area (CPC G): Physics
• CPC primary: G05F1/565
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A telecommunication terminal has a voltage controller (8) which controller forms at least part of an integrated circuit (1) and includes a differential amplifier (14) having a first input (+) for receiving a reference voltage (UREF), means (16, 20) for applying a load current (22) that is provided with at least one phase shifting component (23) as a function of an output voltage of the differential amplifier (14), and a feedback path for feeding back a voltage drop at the load (22) to the second (-) of the two inputs of the differential amplifier. To provide a maximum suppression of disturbances of the output voltage over a wide frequency range and guarantee the stability of the voltage controller, the phase shifting component (23) is arranged outside the integrated circuit (1) and a plurality of separate pins (4, 5) of the integrated circuit (1) are provided for coupling the phase shifting component (23) to the output of the means (16, 20) for producing a load current and to the feedback path. The invention likewise relates to a respective integrated circuit.