Class-AB push-pull drive circuit

Details Class-AB push-pull drive circuit Class-AB push-pull drive circuit

1991-06-18

1992-09-15

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330267, H03F 326

Patent

active

051481200

ABSTRACT:
A class-AB push-pull drive circuit comprises a P channel MOS transistor having a source connected with a DC power source, a drain connected with an output terminal and a control electrode coupled with an input terminal through a voltage-to-current converter and a current-to-voltage converter and an N channel MOS transistor having a source grounded, a drain connected with the output terminal and a control electrode coupled with the input terminal. Conversion characteristics of the converters are so set that a potential difference between the control electrodes of the transistors is kept constant independently of the voltage of an input signal. Thus, the rise and fall of voltage at the output terminal during the conducting state of respective transistors is decreased. In addition, a push-pull drive operation by the transistors can be achieved in accordance with the input signal.

REFERENCES:
patent: 4570128 (1986-02-01), Monticelli
patent: 5057789 (1991-10-01), Nugaraj
"Bipolar and MOS Analog Integrated Circuit Design", by Alan B. Grebene, pp. 295-298.
"The Linear Circuits Data Book 1985", by Texas Instruments, pp. 6-19.

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