Patent ID: 7034618
Filing Date: 2006-04-25
Classification: G05F,H03F

Abstract:
1. A temperature compensating circuit for an amplifier, the circuit comprising: a voltage regulator having at least three terminals, a voltage between a first pair of terminals being adjustable and a reference voltage between a second pair of terminals being thermally stable, and at least part of the output voltage of the temperature compensating circuit being provided from the first pair of terminals; a component arrangement including at least one component with a known temperature dependency of voltage, the at least one component with a known temperature dependency being coupled between the first pair of terminals of the voltage regulator; and a resistor coupling of at least two resistor units for forming a slope coefficient as a ratio of values of the resistors in the resistor coupling, each of the resistor units including at least one resistor, wherein the resistor coupling is coupled to the at least one component having a known temperature dependency and being coupled between the first pair of terminals of the voltage regulator for providing the temperature compensating circuit with an output voltage having a temperature dependency which is a function of the slope coefficient and the known temperature dependency of the at least one component in the component arrangement.