Differential amplifier circuit

A differential amplifier circuit, comprising:

• a first and second input transistor;
• a load element;
• a current source;
• a terminal for an input voltage, the input voltage terminal connected to a control terminal of the first input transistor;
• a terminal for a reference voltage, the reference voltage terminal connected to a control terminal of the second input transistor, the input transistors being connected in parallel between the load element and a terminal of the current source;
• a terminal for an internal reference potential, the internal reference potential terminal connected to a further terminal of the current source;
• and
• a regulating circuit having a control voltage source for generating a control voltage, the regulating circuit being connected to the terminal for the reference voltage and to the terminal for the internal reference potential,
• the regulating circuit regulating the internal reference potential in a manner dependent on fluctuations of the reference voltage such that the internal reference potential is less than the reference voltage by a magnitude of the control voltage.