Abstract: The technology of the present disclosure improves an image quality in a solid-state imaging element that amplifies a voltage for every column. In the solid-state imaging element, an input transistor outputs, from a drain, an output voltage corresponding to a voltage between a source and a gate to which an input voltage is input. A base side current source transistor supplies a predetermined current from the drain of the input transistor to a base node determined in advance. A feedback circuit feeds back a part of the predetermined current to the gate of the input transistor. The clamp circuit limits the output voltage to a value higher than a lower limit voltage determined in advance.

Abstract: An object of the present technology is to provide a light receiving device by which an optical displacement having occurred in a light receiving section during manufacturing and assembling, etc. can be corrected. The light receiving device (10) of the present technology includes a light receiving section (2) including a pixel array (16), and a control section (3) that defines multiple pixels included in the pixel array (16) as an active pixel (Pa) and a non-active pixel (Pb) and causes a signal outputted from a pixel defined as the active pixel (Pa) to be outputted from the light receiving section (2).

Abstract: A filter circuit includes two first differential circuits disposed on A and B sides, in each of which a ratio of the number of transistors to that of diodes is 1:4, and two second differential circuits disposed on the A and B sides, in each of which the ratio of the number of transistors to that of diodes is 4:1. Base electrodes of the transistors of the A-side first differential circuit and the A-side second differential circuit are connected to a circuit input terminal, while base electrodes of the transistors of the B-side first differential circuit and the B-side second differential circuit are connected to another circuit input terminal. A current source is connected to an A-side connection node for the A-side first differential circuit and the A-side second differential circuit and another current source is connected to a B-side connection node for the B-side first differential circuit and the B-side second differential circuit.

Abstract: A filter circuit includes two first differential circuits disposed on A and B sides, in each of which a ratio of the number of transistors to that of diodes is 1:4, and two second differential circuits disposed on the A and B sides, in each of which the ratio of the number of transistors to that of diodes is 4:1. Base electrodes of the transistors of the A-side first differential circuit and the A-side second differential circuit are connected to a circuit input terminal, while base electrodes of the transistors of the B-side first differential circuit and the B-side second differential circuit are connected to another circuit input terminal. A current source is connected to an A-side connection node for the A-side first differential circuit and the A-side second differential circuit and another current source is connected to a B-side connection node for the B-side first differential circuit and the B-side second differential circuit.

Abstract: A filter circuit and an electronic apparatus using the filter circuit in which the manufacturing process can be simplified and the circuit is reduced in its size, and the minimum operating voltage is increasingly lowered and dynamic range is expanded comparing to that of prior art. A capacitor C taking out a signal component in a predetermined band from both ends is connected in series to a first diode, which is constantly in a conducting state by a second current source for diode, of a first differential pair to which the input signal of one differential input signal is supplied, and a second diode, which is constantly in a conducting state by a fourth current source for diode, of a second differential pair to which the other input signal is supplied.