| 主权项 |
1. An apparatus comprising:
an input difference determination circuit configured to determine a digital value based on a difference between first and second input signals, the input difference determination circuit including first, second, third, and fourth transistors, the first transistor and the second transistor cross-coupled to each other and the third and fourth transistors coupled to a first supply voltage, wherein:
a gate of the third transistor is coupled to a gate of the first transistor,a gate of the fourth transistor is coupled to a gate of the second transistor,a drain of the fourth transistor is coupled to a first output node, anda drain of the third transistor is coupled to a second output node; and a charge pump configured to provide a second supply voltage to the first and second transistors to determine the digital value; and a reset circuit configured to receive a reset signal, to reset the first and second output nodes when the reset signal has a first value, and to provide the first supply voltage to the charge pump when the reset signal has the first value, wherein the first and second transistors are configured to have transconductance values that are greater than those of the third and fourth transistors, respectively. |
