Fast bias current startup with feedback
A current mirror circuit comprising an input driver connected to a plurality of output driver circuits through a current mirror network. The current mirror network is separated into two parts, wherein the first part comprises the input driver circuit and the second part comprises capacitive loads in...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A current mirror circuit comprising an input driver connected to a plurality of output driver circuits through a current mirror network. The current mirror network is separated into two parts, wherein the first part comprises the input driver circuit and the second part comprises capacitive loads including a filter capacitor. A switch separates the two parts where an amplifier senses the first part and controls the second part to track the first part when the current mirror circuit is activated. The low source resistance of the output of the amplifier facilitates a fast charging of the capacitance of the second part of the current mirror network dramatically improving signal delay and transition time. |
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