Photoelectric conversion apparatus with first and second conductors that respectively supply corresponding voltages to digital circuits of a vertical scanning circuit and signal processing unit

摘要

A photoelectric conversion apparatus includes, on one substrate, a pixel driving unit and a signal processing unit that includes a digital circuit configured to execute signal processing. A first voltage and a second voltage different in value from the first voltage are supplied to the digital circuit of the pixel driving unit. A third voltage and a fourth voltage different in value from the third voltage are supplied to the digital circuit of the signal processing unit. A main portion of a first conductor that supplies the first voltage to the digital circuit of the pixel driving unit and a main portion of a second conductor that supplies the third voltage to the digital circuit of the signal processing unit are isolated from each other.

主权项

1. A photoelectric conversion apparatus arranged on one semiconductor substrate thereof, comprising:
a plurality of pixels; a vertical scanning circuit that includes a digital circuit configured to supply a driving signal to the plurality of pixels; a plurality of A/D conversion circuits configured to convert analog signals received from the pixels into digital signals; a signal processing unit that includes a digital circuit configured to sequentially receive the digital signals from the plurality of A/D conversion circuits and execute signal processing; and a horizontal scanning circuit configured to sequentially output the digital signals converted by the A/D conversion circuit to the signal processing unit, wherein: a first voltage and a second voltage, different in value from the first voltage, are supplied to the digital circuit of the vertical scanning circuit; a third voltage and a fourth voltage, different in value from the third voltage, are supplied to the digital circuit of the signal processing unit; a main portion of a first conductor that supplies the first voltage to the digital circuit of the vertical scanning circuit and a main portion of a second conductor that supplies the third voltage to the digital circuit of the signal processing unit, wherein the main portion of the first conductor and the main portion of the second conductor are isolated from each other; the third voltage and the fourth voltage are supplied to the horizontal scanning circuit; and a main portion of the second conductor and a main portion of a fifth conductor that supplies the third voltage to the horizontal scanning circuit are not isolated from each other, and/or a main portion of a fourth conductor that supplies the fourth voltage to the digital circuit of the signal processing circuit and a main portion of a sixth conductor that supplies the fourth voltage to the horizontal scanning circuit are not isolated from each other.