Semiconductor integrated circuit, electronic device, solid-state imaging apparatus, and imaging apparatus

A solid-state imaging apparatus comprising:

• first and second substrates;
• photoelectric conversion elements on the first substrate;
• a first part of an analog signal circuit on the first substrate, the analog signal circuit generating an analog signal based on light received by at least one of the photoelectric conversion elements, the first part including at least a transfer transistor, a reset transistor, a select transistor, and an amplification transistor formed as a follower circuit, such that the drain of the amplification transistor is connected to a power supply, the source of the amplification transistor is connected to the drain of the select transistor, and a gate of the amplification transistor is connected to a row selection signal line;
• a second part of the analog signal circuit on the second substrate, the second part having a current supply, the current supply being used as a load for the follower circuit;
• a digital signal circuit on the second substrate, the digital signal circuit converting the analog signal into a digital signal;
• a row scanning circuit on the first substrate and at least one of a timing control circuit and a scanning circuit are on the second substrate;
• and
• a connection between the first and second substrates connecting the first and second parts of the analog signal circuit to each other, wherein the row scanning circuit overlays the at least one of the timing control circuit and the scanning circuit.

An imaging apparatus comprising:

• an optical system which collects light;
• and
• a solid-state imaging portion which has a plurality of photoelectric conversion elements which subject the light collected by the optical system to photoelectric conversion,
• wherein the solid-state imaging portion has
• first and second substrates;
• photoelectric conversion elements on the first substrate;
• a first part of an analog signal circuit on the first substrate, the analog signal circuit generating an analog signal based on light received by at least one of the photoelectric conversion elements, the first part including at least a transfer transistor, a reset transistor, a select transistor, and an amplification transistor formed as a follower circuit, such that the drain of the amplification transistor is connected to a power supply, the source of the amplification transistor is connected to the drain of the select transistor, and a gate of the amplification transistor is connected to a row selection signal line;
• a second part of the analog signal circuit on the second substrate, the second part having a current supply, the current supply being used as a load for the follower circuit;
• a digital signal circuit on the second substrate, the digital circuit converting the analog signal into a digital signal;
• a connection between the first and second substrates connecting the first and second parts of the analog signal circuit to each other;
• a row scanning circuit on the first substrate;
• and
• at least one of a timing control circuit and a scanning circuit on the second substrate, wherein the row scanning circuit overlays the at least one of the timing control circuit and the scanning circuit.

A semiconductor integrated circuit comprising:

• first and second substrates;
• a first part of an analog signal circuit on the first substrate, the analog signal circuit generating an analog signal, the first part including at least a transfer transistor, a reset transistor, a select transistor, and an amplification transistor formed as a follower circuit, such that the drain of the amplification transistor is connected to a power supply, the source of the amplification transistor is connected to the drain of the select transistor, and a gate of the amplification transistor is connected to a row selection signal line;
• a second part of the analog signal circuit on the second substrate, the second part having a current supply, the current supply being used as a load for the follower circuit;
• a digital signal circuit on the second substrate, the digital circuit converting the analog signal into a digital signal;
• a connection between the first and second substrates connecting the first and second parts of the analog signal circuit to each other;
• a row scanning circuit on the first substrate;
• and
• at least one of a timing control circuit and a scanning circuit on the second substrate, wherein the row scanning circuit overlays the at least one of the timing control circuit and the scanning circuit.