Comparator and method for amplifying an input signal
View Patent ↗The invention is aimed at providing a novel semi-conductor component, as well as a novel process for reading test data. There is a process for reading test data is made available, including reading test data generated during a semi-conductor component test procedure from at least one test data register of a semi-conductor component, storing the test data in at least one useful data memory cell provided on the semi-conductor component, and reading the test data from the at least one useful data memory cell.
1. A method for amplifying an input signal, comprising:
providing, by use of a first current source/sink, a first current to an output node;
sinking, by use of a third current source/sink, a third current from the output node; and
inputting the input signal to a control input of the third current source/sink,
wherein a control input of the first current source/sink is connected to the third current source/sink, and to a clamping capacitor, such that an output node load capacitance, representing a second current source/sink, is rapidly charged when the input signal changes its state in a first direction, and is rapidly discharged when the input signal changes its state in a second direction, wherein
when the node load capacitance is rapidly charged, an output signal changes its state in a first direction, and, when the node load capacitance is rapidly discharged, the output signal changes its state in the second direction,
the clamping capacitor is coupled to a resistor,
providing, by use of a fourth current source/sink, a fourth current to the output node,
a signal derived from the input signal is input to a control input of the fourth current source/sink, and
when the input signal changes are relatively small, and/or relatively large and below a reference voltage, the changes in the current provided by the fourth current source/sink prevent the output signal from changing its state.
2. A comparator, comprising:
a first current source/sink, coupled to an output node; and
a third current source/sink, coupled to the output node, wherein a control input of the third current source/sink is coupled to a signal input line, and
a control input of the first current source/sink is connected to the third current source/sink and a clamping capacitor, such that an output node load capacitance, representing a second current source/sink, is rapidly charged when a signal at the signal input line changes its state in a first direction, and is rapidly discharged when the signal at the signal input line changes its state in a second direction, wherein
the control input of the first current source/sink is additionally connected to a feed forward capacitor.
3. The comparator of claim 2 , wherein the clamping capacitor is coupled to a resistor.
4. The comparator of claim 2 , wherein the output node is coupled to an inverter.
5. The comparator of claim 2 , further comprising a fourth current source/sink.
6. The comparator of claim 5 , wherein the fourth current source/sink is coupled to the output node.
7. The comparator of claim 5 , wherein the fourth current source/sink via a resistor is coupled to the signal input line.
8. The comparator of claim 5 , wherein the resistor is coupled to a capacitor.
9. A method for amplifying an input signal, comprising:
providing, by use of a first current source/sink, a first current to an output node;
sinking, by use of a third current source/sink, a third current from the output node; and
inputting the input signal to a control input of the third current source/sink,
wherein a control input of the first current source/sink is connected to the third current source/sink, at a clamping capacitor and additionally by the input via a feed forward capacitor, such that an output node load capacitance, representing a second current source/sink, is rapidly charged when the input signal changes its state in a first direction, and is rapidly discharged when the input signal changes its state in a second direction.
10. The method of claim 9 , wherein the input signal is additionally input to a control input of the first current source/sink.