Chip Law Group
Comparator, ad converter, solid-state image pickup device, electronic device, method of controlling comparator, data writing circuit, data reading circuit, and data transferring circuit
An electronic device is provided for improving the determining speed of the comparator and reducing power consumption. The comparator includes a differential input circuit configured to operate with a first power supply voltage and output a signal when an input signal is higher than a reference signal in voltage; a positive feedback circuit configured to operate with a second power supply voltage lower than the first power supply voltage and to accelerate transition speed when a compared result signal indicating a compared result between the input signal and the reference signal in voltage, is inverted, based on the output signal of the differential input circuit; and a voltage conversion circuit configured to convert the output signal of the differential input circuit into a signal corresponding to the second power supply voltage.
SONY CORPORATION
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H04N H03K H03K H04N G11C H03M H03K H04N H03K H04N H04N G11C H03M H04N H03M
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Tadayuki Hidekazu Masaki
Taura Kikuchi Sakakibara