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US 2006/0125561 A1Published application
High slew ECL device and method therefor
AssigneeSemiconductor Components Industries, LLC
InventorIra Baskett
Life of this patent
Estimating the term…
Abstract
In one embodiment, an ECL logic device uses a capacitor to couple a positive voltage to an output and reduce the rise time of the output signal.
Claims20
A differential amplifier comprising:
- a first transistor having a first current carrying electrode coupled to a first output of the differential amplifier, a second current carrying electrode, and a control electrode coupled to receive a first input signal;
- a second transistor having a first current carrying electrode coupled to a second output of the differential amplifier, a second current carrying electrode coupled to the second current carrying electrode of the first transistor, and a control electrode coupled to receive a second input signal;
- a third transistor having a control electrode coupled to receive the first input signal, a first current carrying electrode, and a second current carrying electrode;
- a first capacitor having a first terminal coupled to the second current carrying electrode of the third transistor, and a second terminal coupled to the first current carrying electrode of the second transistor;
- a fourth transistor having a control electrode coupled to receive the second input signal, a first current carrying electrode, and a second current carrying electrode;
- and
- a second capacitor having a first terminal coupled to the second current carrying electrode of the fourth transistor, and a second terminal coupled to the first current carrying electrode of the first transistor.
4 more elements
A method of forming a differential amplifier comprising:
- configuring a first transistor of a differential pair of a differential amplifier to receive a first input signal;
- and
- configuring a first capacitor to couple a first signal that is representative of the first input signal to a first output of the differential amplifier wherein the first capacitor is isolated from an input of the first transistor.
A method of forming a differential amplifier comprising:
- configuring a differential amplifier to receive a first input signal on a first input and responsively form a first output signal on a first output, and receive a second input signal on a second input and responsively form a second output signal on a second output;
- and
- configuring the differential amplifier to capacitively couple a first signal representative of the first input signal to the second output and to buffer the first signal from the first input signal.
Dependencies are inferred from the claim text.