Patent ID: 11889212
Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. An imaging system comprising:
a lens;
a pixel array connected to the lens; and
converter circuitry, the converter circuitry comprising:
a first transistor configured to receive a pixel signal from the pixel array,
a second transistor configured to receive a reference signal from a reference signal output circuit,
a current mirror electrically connected to a first power source,
a first voltage drop transistor electrically connected between the current mirror and the first transistor,
a second voltage drop transistor electrically connected between the current mirror and the second transistor,
a first switch electrically connected in parallel to the first voltage drop transistor,
a second switch electrically connected in parallel to the second voltage drop transistor, and
a current source electrically connected to the differential pair, wherein
the current source comprises a third transistor, a fourth transistor and a capacitor,
the third transistor is electrically connected to the first transistor and the second transistor,
the fourth transistor is electrically connected to the third transistor and a second power source which is lower voltage than the first power source, and
the capacitor is electrically connected to a gate of the fourth transistor and the second power source.