Solid-state imaging device, electronic apparatus, and AD converter

• Main Authors: Hanzawa, Katsuhiko, Matsumoto, Shizunori
• Format: Patent
• Language: English
• Published: 21.05.2019
• Subjects: BASIC ELECTRIC ELEMENTS; BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION; PULSE TECHNIQUE; SEMICONDUCTOR DEVICES

The solid-state imaging device includes a pixel section having a plurality of pixels, a comparator for comparing a pixel signal outputted from the pixels with a reference signal, and a counter for counting the time of comparison made by the comparator. The comparator includes a first amplifier for comparing the pixel signal with the reference signal, a second amplifier that has a first transistor and amplifies an output signal of the first amplifier, and a second transistor having the same polarity as the first transistor. A gate of the second transistor is connected to an output end of the first amplifier, and a source and a drain of the second transistor are connected to the same fixed potential as a source of the first transistor. The present technology is applicable, for example, to a CMOS image sensor.