Invention Grant
- Patent Title: DA converter and solid-state imaging device that provides reduced power consumption
- Patent Title (中): DA转换器和固态成像设备,降低功耗
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Application No.: US12845224Application Date: 2010-07-28
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Publication No.: US08587707B2Publication Date: 2013-11-19
- Inventor: Shizunori Matsumoto , Chikao Miyazaki
- Applicant: Shizunori Matsumoto , Chikao Miyazaki
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2009-198869 20090828
- Main IPC: H04N3/14
- IPC: H04N3/14

Abstract:
A DA converter includes: a reference current generating circuit that generates a reference current; current sources that supply currents according to the reference current; a voltage output circuit that outputs a voltage according to a current to be supplied thereto; switch circuits provided for the current sources respectively to each switch a connection of each of the current sources to the voltage output circuit or a predetermined load; a control section that controls the switch circuits based on an input digital signal to select that of the current sources which is to be connected to the voltage output circuit, and outputs a voltage according to the digital signal from the voltage output circuit; and a switch that stops an operation of at least one of the current sources based on a control signal from the control section, without stopping an operation of the reference current generating circuit.
Public/Granted literature
- US20110050967A1 DA CONVERTER AND SOLID-STATE IMAGING DEVICE Public/Granted day:2011-03-03
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