DA converter, solid-state imaging device, and camera system
AssigneeSony Corporation
InventorsTakashi Kawaguchi, Ryugi Yoshimura
Life of this patent
Estimating the term…
Abstract
A digital-to-analog (DA) converter includes: an analog output section that generates an output current corresponding to a value of a digital signal in response to a bias voltage and outputs an analog signal which is obtained from the output current by current-to-voltage conversion; a current source; a current control section that converts a current from the current source to a voltage signal and outputs the voltage signal as the bias voltage; and a sample and hold circuit section that samples and holds the bias voltage from the current control section and supplies the held bias voltage to the analog output section.
Claims5
A digital-to-analog (DA) converter comprising:
- an analog output section that generates an output current corresponding to a value of a digital signal in response to a bias voltage and outputs an analog signal which is obtained from the output current by current-to-voltage conversion;
- a current source;
- a current control section that converts a current from the current source to a voltage signal and outputs the voltage signal as the bias voltage;
- and
- a sample and hold circuit section that samples and holds the bias voltage from the current control section and supplies the held bias voltage to the analog output section.
Dependencies are inferred from the claim text.