Patent ID: 9431968
Filing Date: 2016-08-30
CPC Classification: H03F

Claim Text:
1. A circuit to enhance slew rate, comprising: an amplifier comprising a positive input operably coupled to a first side of an amplifier differential pair, a negative input operably coupled to a second side of the amplifier differential pair, and an output; a first slew direction enhancer comprising a first differential pair, wherein the first differential pair has a first transistor and a second transistor, is operably coupled to the positive input and the negative input is configured to cause the first slew direction enhancer to provide additional current for the first side of the amplifier differential pair during an offset in a first direction between the positive input and the negative input, and wherein a gate length of the first transistor is shorter than a gate length of the second transistor to detect the offset in the first direction after the amplifier differential pair detects the offset in the first direction; and a second slew direction enhancer comprising a second differential pair operably coupled to the positive input and the negative input, wherein the second differential pair is configured to cause the second slew direction enhancer to provide additional current for the second side of the amplifier differential pair during an offset in a second direction between the positive input and the negative input.