| Patent Number |
Title Of Patent |
Date Issued |
| 7554074 |
Image sensor for low-noise voltage operation |
June 30, 2009 |
| An image sensor operated in a pseudo pinch-off condition capable of reducing a reset voltage of a photodiode and reducing a dark current and fixed pattern noise generated due to discordance of characteristics between pixels is presented. The image sensor has a photosensitive pixel, a |
| 7388533 |
Multi-bit sigma-delta modulator and digital-to-analog converter with one digital-to-analog capac |
June 17, 2008 |
| A digital-to-analog converter (DAC) for a sigma-delta modulator is provided. The DAC has a switched capacitor structure using an operational amplifier (OP amp) and performs a function exceeding 3-level using a switching method employing only one capacitor in single ended form. Thus, |
| 7375504 |
Reference current generator |
May 20, 2008 |
| Provided is a low-reference-current generator that includes a circuit employing two feedback loops enabling it to operate even at a low voltage, has a high power supply rejection ratio (PSRR) to control power supply noise, and simply forms a voltage without a voltage-to-current conve |
| 7030799 |
Current-steering digital-to-analog converter |
April 18, 2006 |
| Disclosed is a current-steering digital-to-analog converter (DAC) which comprises a decoder for receiving an N-bit digital input signal and converting the same into first and second (N-1)-bit digital signals, M (=2.sup.N-1) current cells for supplying the current based on the two dig |
