Integrable oscillator circuit

Integrable bipolar oscillator circuit, comprising first, second, third and fourth transistors of the same conductivity type, first, second, third and fourth resistors, first, second and third constant current sources having base points and outputs, a reference potential terminal connected to said base points of said first, second and third constant current sources, a supply potential terminal, and a frequency-determining feedback member, said output of said first constant current source being connected to the emitter of said first transistor and to the base of said second transistor, said output of said second constant current source being connected to the emitter of said third transistor and to the base of said fourth transistor, the emitters of said second and fourth transistors being connected to said output of said third constant current source through a given connection, the collectors of said first and third transistors being directly connected to said supply potential terminal, said first and second resistors each being connected between a respective one of the collectors of said second and fourth transistors and said supply potential terminal, said fourth resistor being connected between the base of said first transistor and the collector of said fourth transistor, said third resistor being connected between the base of said third transistor and the collector of said second transistor, said frequency-determining feedback member being connected between the base of said third transistor and the base of said first transistor, and an oscillator voltage being supplied between the emitters of said first and third transistors.