Push-pull amplifier circuitry
First Claim
1. A push-pull amplifier circuitry comprising:
- a first and a second field effect transistor (FET) of an n-channel type both having a gate electrode, a drain electrode and a source electrode;
a third FET of a p-channel type having a gate electrode and a source electrode connected to the gate electrode of said first FET and to the source electrode of said second FET, respectively, and having a drain electrode;
a fourth FET of a p-channel type having a gate electrode and a source electrode connected to the gate electrode of said second FET and to the source electrode of said first FET, respectively, and having a drain electrode;
a positive voltage supply connected to the drain electrode of said first FET and via a first resistor to the drain electrode of said second FET;
a negative voltage supply connected to the drain electrode of said third FET and via a second resistor to the drain electrode of said fourth FET;
a first input terminal of said push-pull amplifier circuitry connected to the coupled gate electrodes of said first and said third FET'"'"'s;
a second input terminal of said push-pull amplifier circuitry connected to the coupled gate electrodes of said second and said fourth FET'"'"'s;
a first output terminal of said push-pull amplifier circuitry connected to the drain electrode of said second FET and,a second output terminal of said push-pull amplifier circuitry connected to the drain electrode of said fourth FET.
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Abstract
A push-pull amplifier circuitry comprising: a first and a second FET (abbreviation of field effect transistor which will be used hereinafter) of an n-channel type, a third FET of a p-channel type with its gate and source connected to the gate of said first FET and to the source of said second FET respectively, a fourth FET of a p-channel type having a gate and a source connected to the gate of said second FET and to the source of said first FET, a positive voltage supply connected to the drain of said first FET and via a resistor to the drain of said second FET and, a negative voltage supply connected to the drain of said third FET and via another resistor to the drain of said fourth FET. This circuitry is suitable for use as an input stage or an interstage amplifier circuit such as a pre-driver of a multistage direct-coupled push-pull amplifier.
16 Citations
7 Claims
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1. A push-pull amplifier circuitry comprising:
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a first and a second field effect transistor (FET) of an n-channel type both having a gate electrode, a drain electrode and a source electrode; a third FET of a p-channel type having a gate electrode and a source electrode connected to the gate electrode of said first FET and to the source electrode of said second FET, respectively, and having a drain electrode; a fourth FET of a p-channel type having a gate electrode and a source electrode connected to the gate electrode of said second FET and to the source electrode of said first FET, respectively, and having a drain electrode; a positive voltage supply connected to the drain electrode of said first FET and via a first resistor to the drain electrode of said second FET; a negative voltage supply connected to the drain electrode of said third FET and via a second resistor to the drain electrode of said fourth FET; a first input terminal of said push-pull amplifier circuitry connected to the coupled gate electrodes of said first and said third FET'"'"'s; a second input terminal of said push-pull amplifier circuitry connected to the coupled gate electrodes of said second and said fourth FET'"'"'s; a first output terminal of said push-pull amplifier circuitry connected to the drain electrode of said second FET and, a second output terminal of said push-pull amplifier circuitry connected to the drain electrode of said fourth FET. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification