Photoelectric conversion device, substrate, and equipment comprising a circuit to determine an internal temperature of the photoelectric conversion device based on a current following in a resistive element

A photoelectric conversion device comprising:

• a light receiving circuit configured to convert light into an electrical signal;
• a first hold circuit configured to hold a data signal which represents the electrical signal converted from the light;
• a second hold circuit configured to hold a noise signal read out from the light receiving circuit in a reset state;
• a resistive element to which a voltage corresponding to a difference between the data signal held by the first hold circuit and the noise signal held by the second hold circuit is applied;
• an A/D converter configured to convert an analog current flowing in the resistive element into digital data;
• a temperature detection circuit configured to generate an analog output corresponding to an internal temperature of the photoelectric conversion device;
• and
• a processing circuit configured to estimate, based on the analog output, an internal temperature of the photoelectric conversion device.

A substrate to be stacked on a substrate on which a light receiving circuit configured to convert light into an electrical signal is arranged, comprising:

• a first hold circuit configured to hold a data signal which represents the electrical signal converted from the light;
• a second hold circuit configured to hold a noise signal read out from the light receiving circuit in a reset state;
• a first resistive element to which a voltage corresponding to a difference between the data signal held by the first hold circuit and the noise signal held by the second hold circuit is applied;
• an A/D converter configured to convert an analog current flowing in the first resistive element into digital data;
• a second resistive element;
• and
• a temperature detection circuit configured to generate, based on a current flowing in the second resistive element, an analog output corresponding to an internal temperature of a photoelectric conversion device.

A substrate to be stacked on a substrate on which a light receiving circuit configured to convert light into an electrical signal is arranged, comprising:

• a first hold circuit configured to hold a data signal which represents the electrical signal converted from the light;
• a second hold circuit configured to hold a noise signal read out from the light receiving circuit in a reset state;
• a resistive element to which a voltage corresponding to a difference between the data signal held by the first hold circuit and the noise signal held by the second hold circuit is applied;
• an A/D converter configured to convert an analog current flowing in the resistive element into digital data;
• a temperature detection circuit configured to generate an analog output corresponding to an internal temperature of a photoelectric conversion device;
• and
• a processing circuit configured to estimate, based on the analog output, the internal temperature of the photoelectric conversion device.