A pressure-sensitive amplifier stage comprising - four unipolar pressure-sensor transistors (12,14,16,18), each comprising a control terminal and a current path (12d,14d,16d,18d) arranged between a further first and a further second terminal (12b, 12c,14b,14c,16b,16c,18b,18c), said current path being sensitive to mechanical tension, - said four pressure-sensor transistors (12,14,16,18) being connected as a pressure-measuring bridge having two bridge legs (22, 24), each of said bridge legs comprising a first and a second pressure-sensor transistor (12,16 and resp. 14,18) which are connected in series with respect to their current paths, characterized by - two unipolar control transistors (26,28), each having a control terminal (26a,26b) and a current path (26d,28d) arranged between a further first and a further second terminal (26b,26c;28b,28c), - the respective first and second terminals (26b,26c;28b,28c) of said two control transistors (26,28) being connected in pairs, and the control terminals (26a,28a) of the control transistors (26,28) each being connected to a node (22a,24a) between the pressure-sensor transistors (12,16 and resp. 14,18) of the two bridge legs (22,24), and - the interconnected second terminals (26c,28c) of the two parallel- connected control transistors (26,28) being connected to the control terminals (16a,18a) of the second pressure-sensor transistors (16, 18) of the two bridge legs (22,24), - a first power source connected between a first supply voltage on the one hand, and the first terminals (12b,14b) of the first pressure-sensor transistors (12,14) of the two bridge legs (22,24) and the interconnected first terminals (26a,28a) of the control transistors (26,28) on the other hand, said first power source being provided for generating a first current, and - a second power source connected between a second supply voltage on the one hand, and the interconnected second terminals (26c,28c) of the control transistors (26,28) and the control terminals (16a,18a) of the second pressure-sensor transistors (16,18) of the two bridge legs (22,24) on the other hand, said second power source being provided for generating a second current (I/2), - the control terminals (12a,14a) of the first pressure-sensor transistors (12,14) of the two bridge legs (22,24) being adapted for connection thereto of a respective operating input voltage (INN, INP), and a measurement output voltage (OUTN,OUTP) being detectable between the respective pressure-sensor transistors (12,16 and resp. 14,18) of the two bridge legs (22,24), and - said measurement output voltage (OUTN,OUTP) of the pressure-measuring bridge being connectable to the control terminals (12a,14a) of the first pressure-sensor transistors (12,14) of the two bridge legs (22,24) of a further pressure-measuring bridge for cascading the pressure-measuring bridges. - four unipolar pressure-sensor transistors (12,14,16,18), each comprising a control terminal and a current path (12d,14d,16d,18d) arranged between a further first and a further second terminal (12b, 12c,14b,14c,16b,16c,18b,18c), said current path being sensitive to mechanical tension, - said four pressure-sensor transistors (12,14,16,18) being connected as a pressure-measuring bridge having two bridge legs (22, 24), each of said bridge legs comprising a first and a second pressure-sensor transistor (12,16 and resp. 14,18) which are connected in series with respect to their current paths, characterized by - two unipolar control transistors (26,28), each having a control terminal (26a,26b) and a current path (26d,28d) arranged between a further first and a further second terminal (26b,26c;28b,28c), - the respective first and second terminals (26b,26c;28b,28c) of said two control transistors (26,28) being connected in pairs, and the control terminals (26a,28a) of the control transistors (26,28) each being connected to a node (22a,24a) between the pressure-sensor transistors (12,16 and resp. 14,18) of the two bridge legs (22,24), and - the interconnected second terminals (26c,28c) of the two parallel- connected control transistors (26,28) being connected to the control terminals (16a,18a) of the second pressure-sensor transistors (16, 18) of the two bridge legs (22,24), - a first power source connected between a first supply voltage on the one hand, and the first terminals (12b,14b) of the first pressure-sensor transistors (12,14) of the two bridge legs (22,24) and the interconnected first terminals (26a,28a) of the control transistors (26,28) on the other hand, said first power source being provided for generating a first current, and - a second power source connected between a second supply voltage on the one hand, and the interconnected second terminals (26c,28c) of the control transistors (26,28) and the control terminals (16a,18a) of the second pressure-sensor transistors (16,18) of the two bridge legs (22,24) on the other hand, said second power source being provided for generating a second current (I/2), - the control terminals (12a,14a) of the first pressure-sensor transistors (12,14) of the two bridge legs (22,24) being adapted for connection thereto of a respective operating input voltage (INN, INP), and a measurement output voltage (OUTN,OUTP) being detectable between the respective pressure-sensor transistors (12,16 and resp. 14,18) of the two bridge legs (22,24), and - said measurement output voltage (OUTN,OUTP) of the pressure-measuring bridge being connectable to the control terminals (12a,14a) of the first pressure-sensor transistors (12,14) of the two bridge legs (22,24) of a further pressure-measuring bridge for cascading the pressure-measuring bridges.