Device and method including current measurement and/or amplification
View Patent ↗A device and a method including current measurement and/or amplification is disclosed. One embodiment provides supplying a current to be measured to a current amplifier. The current is amplified by the current amplifier. The amplified current or a current generated is fed back therefrom to the current amplifier. The current amplifier may include a current mirror. Furthermore, at least one delay means may be used by which the process of current amplification and/or current feedback may be delayed correspondingly.
1. A method for operating a semiconductor device including current measurement and/or current amplification, comprising:
supplying a current to be measured to a current amplifier;
amplifying the current by the current amplifier;
feeding back the amplified current or a current generated therefrom to the current amplifier; and
one of terminating the feeding back of the amplified current or of the current generated therefrom to the current amplifier after a predetermined period, and terminating the feeding back of the amplified current or of the current generated therefrom to the current amplifier if the current or a value representing a measure for the intensity of the current exceeds a predetermined threshold value.
2. The method of claim 1 , wherein the current amplifier comprises a current mirror.
3. The method of claim 2 , which additionally comprises:
supplying the current amplified by the current mirror to a further current mirror;
mirroring the amplified current by the further current mirror; and
feeding back the mirrored current to the current mirror.
4. The method of claim 3 , comprising further amplifying the amplified current during the mirroring of the amplified current by the further current mirror.
5. The method of claim 1 , comprising:
amplifying the current fed back to the current amplifier by the current amplifier.
6. The method of claim 1 , comprising:
delaying the current amplification and/or the current feedback by at least one delay means.
7. The method of claim 6 , wherein the delay comprises at least one capacitive element.
8. The method of claim 1 , wherein the delay comprises at least one switching element.
9. The method of claim 2 , wherein the amplifying of the current by the current amplifier comprises:
connecting a capacitive element provided in the current mirror with a first transistor or a first group of transistors of the current mirror, and separating the capacitive element from a second transistor or a second group of transistors of the current mirror.
10. The method of claim 9 , wherein the amplifying of the current by the current amplifier further comprises:
separating the capacitive element from the first transistor or the first group of transistors of the current mirror, and connecting the capacitive element with the second transistor or the second group of transistors of the current mirror.
11. A device including current measurement or current amplification, respectively, which comprises:
a current amplifier; and
a circuit for feeding back a current amplified by the current amplifier or a current generated therefrom to the current amplifier, the circuit configured to one of terminate the feeding back of the amplified current or of the current generated therefrom to the current amplifier after a predetermined period, and terminate the feeding back of the amplified current or of the current generated therefrom to the current amplifier if the current or a value representing a measure for the intensity of the current exceeds a predetermined threshold value.
12. The device of claim 11 , wherein the current amplifier comprises a current mirror.
13. The device of claim 12 , which comprises at least one further current mirror.
14. The device of claim 11 , which additionally comprises at least one delay.
15. The device of claim 14 , comprising wherein the delay is positioned between the current mirror and the further current mirror.
16. The device of claim 14 , comprising wherein the delay is provided in the current mirror or the further current mirror, respectively.
17. The device of claim 14 , comprising wherein the delay is, via a first switching element, adapted to be connected with a first transistor or a first group of transistors of the current mirror and, via a further switching element, with a second transistor or a second group of transistors of the current mirror.
18. A method for operating a semiconductor device including current measurement and/or current amplification, comprising:
supplying a current to be measured to a current amplifier comprising a current mirror;
amplifying the current by the current amplifier, the amplifying comprising connecting a capacitive element provided in the current mirror with a first transistor or a first group of transistors of the current mirror, separating the capacitive element from a second transistor or a second group of transistors of the current mirror, separating the capacitive element from the first transistor or the first group of transistors of the current mirror, and connecting the capacitive element with the second transistor or the second group of transistors of the current mirror; and
feeding back the amplified current or a current generated therefrom to the current amplifier.