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公开(公告)号：US08068047B2
公开(公告)日：2011-11-29
申请号：US12687525
申请日：2010-01-14
IPC分类号： H03M1/12
CPC分类号： H03M1/0604 , H03M1/0682 , H03M1/468 , H03M1/804
摘要： Provided is an AD conversion apparatus including: a differential amplifier that generates a differential input voltage according to an analog input signal; a differential DA converter of a charge redistribution type, which outputs a differential output voltage resulting from subtracting the differential input voltage from a differential comparison voltage that is in accordance with comparison data; a comparator that compares a positive output voltage and a negative output voltage in the differential output voltage; a control section that identifies the comparison data at which the differential output voltage becomes substantially 0 based on a comparison result of the comparator, and outputs the identified comparison data as output data; and a setting section that sets at least one of a common potential of the differential amplifier and a common potential of the differential DA converter, according to a targeted value of a common potential of the comparator
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公开(公告)号：US08094053B2
公开(公告)日：2012-01-10
申请号：US12635169
申请日：2009-12-10
IPC分类号： H03M1/66
CPC分类号： H03M1/1038 , H03M1/66
摘要： Provided is a signal generating apparatus comprising a DA converter that outputs an output signal corresponding to input data supplied thereto; a sample/hold unit that is provided between the DA converter and an output end of the signal generating apparatus, and that samples an output voltage of the DA converter and holds the sampled output voltage; a comparing section that compares (i) a level of a signal output from an analog circuit that propagates the output signal to output a signal corresponding to the input data to (ii) a level of the signal output by the DA converter; and a control section that, during a holding period, (iii) provides the DA converter with comparison data instead of the input data to cause the DA converter to output a comparison voltage corresponding to the comparison data, (iv) causes the comparing section to compare a voltage of the signal output by the analog circuit to the comparison voltage, and (v) adjusts the output voltage of the DA converter based on a comparison result of the comparing section.
摘要翻译： 提供了一种信号发生装置，包括DA转换器，其输出与提供给其的输入数据相对应的输出信号; 采样/保持单元，设置在DA转换器和信号发生装置的输出端之间，并且对DA转换器的输出电压进行采样并保持采样的输出电压; 比较部分，其比较（i）从传播输出信号的模拟电路输出的信号的电平，以输出对应于输入数据的信号，以（ii）由DA转换器输出的信号的电平; 以及控制部，在保持期间，（iii）向DA转换器提供代替输入数据的比较数据，使DA转换器输出与比较数据对应的比较电压，（iv）使比较部分 将模拟电路输出的信号的电压与比较电压进行比较，（v）根据比较部分的比较结果调整DA转换器的输出电压。
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公开(公告)号：US07982520B2
公开(公告)日：2011-07-19
申请号：US12642706
申请日：2009-12-18
IPC分类号： H03L5/00
摘要： Provided is a signal generating apparatus that outputs from an output end thereof an output voltage corresponding to input data supplied thereto, comprising: a DA converter that outputs a voltage corresponding to data supplied thereto; a capacitor section that is provided between the output end and a standard potential; a transmission switch that provides a connection or a disconnect between a voltage generating end of the DA converter and the output end; and a control section that causes the DA converter to charge the capacitor section with a voltage corresponding to the input data by repeatedly connecting and disconnecting the transmission switch, thereby causing the voltage of the capacitor section to gradually approach the output voltage corresponding to the input data.
摘要翻译： 提供一种信号发生装置，从其输出端输出与提供给其的输入数据相对应的输出电压，包括：DA转换器，输出与提供给其的数据相对应的电压; 电容器部分，其设置在输出端和标准电位之间; 传输开关，其提供DA转换器的电压产生端与输出端之间的连接或断开; 以及控制部，其使得DA转换器通过重复地连接和断开所述传输开关而对与所述输入数据相对应的电压对所述电容器部分充电，从而使所述电容器部分的电压逐渐接近与所述输入数据相对应的输出电压 。
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