专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07236047B2 Band gap circuit 有权
公开(公告)号：US07236047B2
公开(公告)日：2007-06-26
申请号：US11260176
申请日：2005-10-28
申请人： Suguru Tachibana , Kazuhiro Mitsuda , Tatsuo Kato
发明人： Suguru Tachibana , Kazuhiro Mitsuda , Tatsuo Kato
IPC分类号： G05F1/10
CPC分类号： G05F3/30
摘要： A band gap circuit includes a voltage generating circuit, and a first and a second switched capacitor circuits (SCC). Operational amplifier in the first and the second SCC are connected though a coupling capacitor. Capacitance of the coupling capacitor is smaller than that of a feedback capacitor in the first SCC. A PTAT voltage is obtained by multiplying a thermal voltage by a coefficient determined based on capacitances of input capacitors and feedback capacitors in each of the first and the second SCC, and the coupling capacitor. The voltage generating circuit generates a forward bias voltage that has a negative temperature-dependency at a p-n junction. The PTAT voltage is added to the forward bias voltage to generate a reference voltage independent of temperature.

2. 发明申请

US20070115159A1 ANALOG-TO-DIGITAL CONVERTER 有权
标题翻译：模拟数字转换器
公开(公告)号：US20070115159A1
公开(公告)日：2007-05-24
申请号：US11363968
申请日：2006-03-01
申请人： Suguru Tachibana , Kazuhiro Mitsuda , Tatsuo Kato
发明人： Suguru Tachibana , Kazuhiro Mitsuda , Tatsuo Kato
IPC分类号： H03M1/66
CPC分类号： H03M1/1023 , H03M1/0682 , H03M1/468 , H03M1/804
摘要： Included are a first DAC taking in and retaining sample data of a first analog signal and generating a comparison signal serving as an object of comparison with the first analog signal, a second DAC taking in and retaining sample data of a second analog signal and generating a comparison signal as an object of comparison with the second analog signal, a first switch connecting the first digital-to-analog converter to an output side of a second digital converter in a openable/closable manner, a comparator comparing, when the first switch is opened, a differential value between the first analog signal and the second analog signal with a differential value between an output signal of the first DAC and an output signal of the second DAC, and an electric potential control circuit controlling fluctuations in electric potentials of a first analog terminal and a second analog terminal.
摘要翻译：包括第一DAC接收并保留第一模拟信号的采样数据并产生用作与第一模拟信号进行比较的对象的比较信号，第二DAC接收并保留第二模拟信号的采样数据并产生比较信号作为与第二模拟信号进行比较的对象，第一开关以第一开关为第一开关为第一开关，将第一数模转换器以可开/关的方式连接到第二数字转换器的输出侧;比较器，打开第一模拟信号和第二模拟信号之间的差分值，其中第一DAC的输出信号和第二DAC的输出信号之间的差分值和控制第一DAC的电位波动的电位控制电路模拟端子和第二模拟端子。

3. 发明申请

US20070035434A1 Successive approximation A/D converter 有权
标题翻译：连续近似A / D转换器
公开(公告)号：US20070035434A1
公开(公告)日：2007-02-15
申请号：US11273025
申请日：2005-11-15
申请人： Suguru Tachibana , Kazuhiro Mitsuda , Tatsuo Kato
发明人： Suguru Tachibana , Kazuhiro Mitsuda , Tatsuo Kato
IPC分类号： H03M1/38
CPC分类号： H03M1/468 , H03M1/0682
摘要： A successive approximation. A/D converter includes a sample-hold amplifier circuit configured to sample and hold an input analog voltage to produce an internal analog voltage proportional to the input analog voltage with a voltage gain being smaller than 1, a switched capacitor D/A converter coupled to the sample-hold amplifier circuit and including a plurality of capacitors for storing electric charge responsive to the internal analog voltage, the switched capacitor D/A converter configured to switch couplings of the capacitors in response to a control signal to produce a comparison analog voltage responsive to the internal analog voltage and the control signal, a comparator coupled to the switched capacitor D/A converter to produce a comparison result signal responsive to the comparison analog voltage, and a control circuit coupled to the comparator to supply the control signal responsive to the comparison result signal to the switched capacitor D/A converter.
摘要翻译：逐渐逼近。 A / D转换器包括采样保持放大器电路，其被配置为采样和保持输入模拟电压以产生与输入模拟电压成比例的内部模拟电压，其电压增益小于1，开关电容器D / A转换器耦合到所述采样保持放大器电路并且包括用于响应于所述内部模拟电压而存储电荷的多个电容器，所述开关电容器D / A转换器被配置为响应于控制信号来切换所述电容器的耦合，以产生比较模拟电压响应与所述内部模拟电压和所述控制信号相对应的比较器，耦合到所述开关电容器D / A转换器的比较器，以响应于所述比较模拟电压产生比较结果信号;以及控制电路，耦合到所述比较器以响应于所述控制信号提供所述控制信号比较结果信号到开关电容器D / A转换器。

4. 发明申请

US20070040600A1 Band gap circuit 有权
标题翻译：带隙电路
公开(公告)号：US20070040600A1
公开(公告)日：2007-02-22
申请号：US11260176
申请日：2005-10-28
申请人： Suguru Tachibana , Kazuhiro Mitsuda , Tatsuo Kato
发明人： Suguru Tachibana , Kazuhiro Mitsuda , Tatsuo Kato
IPC分类号： G05F1/10
CPC分类号： G05F3/30
摘要： A band gap circuit includes a voltage generating circuit, and a first and a second switched capacitor circuits (SCC). Operational amplifier in the first and the second SCC are connected though a coupling capacitor. Capacitance of the coupling capacitor is smaller than that of a feedback capacitor in the first SCC. A PTAT voltage is obtained by multiplying a thermal voltage by a coefficient determined based on capacitances of input capacitors and feedback capacitors in each of the first and the second SCC, and the coupling capacitor. The voltage generating circuit generates a forward bias voltage that has a negative temperature-dependency at a p-n junction. The PTAT voltage is added to the forward bias voltage to generate a reference voltage independent of temperature.
摘要翻译：带隙电路包括电压产生电路和第一和第二开关电容器电路（SCC）。第一和第二SCC中的运算放大器通过耦合电容器连接。耦合电容的电容小于第一SCC中的反馈电容的电容。通过将热电压乘以基于第一和第二SCC中的每一个中的输入电容器和反馈电容器的电容确定的系数和耦合电容器来获得PTAT电压。电压产生电路产生在p-n结处具有负温度依赖性的正向偏置电压。将PTAT电压加到正向偏置电压以产生独立于温度的参考电压。

5. 发明授权

US07233273B2 Analog-to-digital converter 有权
标题翻译：模数转换器
公开(公告)号：US07233273B2
公开(公告)日：2007-06-19
申请号：US11363968
申请日：2006-03-01
申请人： Suguru Tachibana , Kazuhiro Mitsuda , Tatsuo Kato
发明人： Suguru Tachibana , Kazuhiro Mitsuda , Tatsuo Kato
IPC分类号： H03M1/12
CPC分类号： H03M1/1023 , H03M1/0682 , H03M1/468 , H03M1/804
摘要： Included are a first unit including a DAC which generates a comparison signal serving as an object of comparison with the first analog signal, taking in and retaining the first analog signal, a second unit including a DAC which generates a comparison signal serving as an object of comparison with the first analog signal, taking in and retaining the second analog signal, a first switch connecting the first unit to an output side of the second unit, a comparator comparing a differential value between the first analog signal and the second analog signal with a differential value between the comparison signal of the first DAC and an output signal of the second DAC, and an electric potential control circuit controlling fluctuations in electric potentials of the first analog terminal and the second analog terminal.
摘要翻译：包括第一单元，包括DAC，其产生用作与第一模拟信号进行比较的对象的比较信号，接收并保持第一模拟信号;第二单元，包括DAC，其产生用作对象的比较信号与所述第一模拟信号进行比较，接收和保持所述第二模拟信号，将所述第一单元连接到所述第二单元的输出侧的第一开关，将所述第一模拟信号和所述第二模拟信号之间的差分值与第一DAC的比较信号和第二DAC的输出信号之间的差分值以及控制第一模拟端子和第二模拟端子的电位波动的电位控制电路。

6. 发明授权

US07199745B2 Successive approximation A/D converter provided with a sample-hold amplifier 有权
标题翻译：具有采样保持放大器的逐次近似A / D转换器
公开(公告)号：US07199745B2
公开(公告)日：2007-04-03
申请号：US11273025
申请日：2005-11-15
申请人： Suguru Tachibana , Kazuhiro Mitsuda , Tatsuo Kato
发明人： Suguru Tachibana , Kazuhiro Mitsuda , Tatsuo Kato
IPC分类号： H03M1/34
CPC分类号： H03M1/468 , H03M1/0682
摘要： A successive approximation A/D converter includes a sample-hold amplifier circuit configured to sample and hold an input analog voltage to produce an internal analog voltage proportional to the input analog voltage with a voltage gain being smaller than 1, a switched capacitor D/A converter coupled to the sample-hold amplifier circuit and including a plurality of capacitors for storing electric charge responsive to the internal analog voltage, the switched capacitor D/A converter configured to switch couplings of the capacitors in response to a control signal to produce a comparison analog voltage responsive to the internal analog voltage and the control signal, a comparator coupled to the switched capacitor D/A converter to produce a comparison result signal responsive to the comparison analog voltage, and a control circuit coupled to the comparator to supply the control signal responsive to the comparison result signal to the switched capacitor D/A converter.
摘要翻译：逐次逼近A / D转换器包括采样保持放大器电路，其被配置为采样和保持输入模拟电压以产生与输入模拟电压成比例的内部模拟电压，其电压增益小于1，开关电容器D / A 转换器，其耦合到采样保持放大器电路，并且包括用于响应于内部模拟电压存储电荷的多个电容器，所述开关电容器D / A转换器被配置为响应于控制信号来切换电容器的耦合以产生比较响应于内部模拟电压和控制信号的模拟电压，耦合到开关电容器D / A转换器的比较器，以响应于比较模拟电压产生比较结果信号;以及控制电路，耦合到比较器以提供控制信号响应于比较结果信号到开关电容器D / A转换器。

7. 发明授权

US08508307B2 Oscillation circuit 有权
标题翻译：振荡电路
公开(公告)号：US08508307B2
公开(公告)日：2013-08-13
申请号：US13158054
申请日：2011-06-10
申请人： Kazuhiro Mitsuda , Koji Okada , Suguru Tachibana
发明人： Kazuhiro Mitsuda , Koji Okada , Suguru Tachibana
IPC分类号： H03L1/02 , H03K3/26 , H03K3/353
CPC分类号： H03L1/04 , G05F3/30 , H03K3/011 , H03K3/027
摘要： An oscillation circuit including a reference voltage generation circuit that adds a proportional-to-absolute-temperature (PTAT) output, which increases in proportion to an absolute temperature, to a complementary-to-absolute-temperature (CTAT) output, which decreases in proportion to an absolute temperature, to generate and output a reference voltage. The oscillation circuit generates an oscillation signal having a desired and fixed frequency.
摘要翻译：一种包括参考电压产生电路的振荡电路，其将与绝对温度成比例增加的比例绝对温度（PTAT）输出添加到互补绝对温度（CTAT）输出，其降低与绝对温度成比例，以产生和输出参考电压。振荡电路产生具有期望和固定频率的振荡信号。

8. 发明申请

US20080238517A1 Oscillator Circuit and Semiconductor Device 审中-公开
标题翻译：振荡器电路和半导体器件
公开(公告)号：US20080238517A1
公开(公告)日：2008-10-02
申请号：US12056041
申请日：2008-03-26
申请人： Hideo NUNOKAWA , Kazuhiro Mitsuda
发明人： Hideo NUNOKAWA , Kazuhiro Mitsuda
IPC分类号： H03K3/02
CPC分类号： H03K3/0315
摘要： An oscillator circuit includes a capacitance element; an inverter outputting an inverted voltage at a first terminal of the capacitance element; a voltage source including a resistor and an NMOS transistor connected in series between a first high-potential power supply and a ground power supply and outputting a voltage from a node to which the resistor and the NMOS transistor are connected; a switch circuit connecting a second terminal of the capacitance element to the voltage source or the ground power supply in accordance with the voltage output from the inverter; and a constant-current source connected to a second high-potential power supply and allowing, regardless of changes in the voltage and temperature of the second high-potential power supply within certain ranges, flow of a constant current into or out of the first terminal of the capacitance element in accordance with the voltage output from the inverter.
摘要翻译：振荡电路包括电容元件; 在所述电容元件的第一端子处输出反相电压的逆变器; 电压源，包括串联连接在第一高电位电源和接地电源之间的电阻器和NMOS晶体管，并从电阻器和NMOS晶体管连接到的节点输出电压; 开关电路，根据从逆变器输出的电压，将电容元件的第二端子连接到电压源或接地电源; 以及连接到第二高电位电源的恒流源，并且允许不管第一高电位电源的电压和温度在一定范围内的变化，恒定电流流入或流出第一端子根据来自逆变器的电压输出电容元件。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式