Sample-and-hold current sense amplifier and related method

摘要

A device includes an amplifier and a first switched current sampler. The first switched current sampler includes a first transistor, a first capacitor, and first, second, and third switches. The first capacitor has a first terminal electrically connected to a gate electrode of the first transistor, and a second terminal electrically connected to a source electrode of the first transistor. The first switch has a first terminal electrically connected to a first current source, and a second terminal electrically connected to the gate electrode of the first transistor. The second switch has a first terminal electrically connected to the first current source, and a second terminal electrically connected to a drain electrode of the first transistor. The third switch has a first terminal electrically connected to the drain electrode of the first transistor, and a second terminal electrically connected to a first input terminal of the amplifier.

主权项

1. A device comprising:
an amplifier; and a first switched current sampler comprising:
a first transistor;a first capacitor having:
a first terminal electrically connected to a gate electrode of the first transistor; anda second terminal electrically connected to a direct current (DC) bias node of the device;a first switch having:
a first terminal electrically connected to a first current source; anda second terminal electrically connected to the gate electrode of the first transistor;a second switch having:
a first terminal electrically connected to the first current source; anda second terminal electrically connected to a drain electrode of the first transistor; anda third switch having:
a first terminal electrically connected to the drain electrode of the first transistor; anda second terminal electrically connected to a first input terminal of the amplifier.