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公开(公告)号：US11233525B2
公开(公告)日：2022-01-25
申请号：US16748849
申请日：2020-01-22
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Jagannathan Venkataraman , Prabu Sankar Thirugnanam , Raja Reddy Patukuri , Sandeep Kesrimal Oswal
IPC: H03M3/00
Abstract: The disclosure provides a receiver with high dynamic range. The receiver includes a photodiode that generates a current signal. A coupling capacitor is coupled to the photodiode, and generates a modulation signal in response to the current signal received from the photodiode. A sigma delta analog to digital converter (ADC) is coupled to the coupling capacitor, and generates a digital data in response to the modulation signal. A digital mixer is coupled to the sigma delta ADC, and generates an in-phase component and a quadrature component corresponding to the digital data. A processor is coupled to the digital mixer, and processes the in-phase component and the quadrature component corresponding to the digital data.
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公开(公告)号：US10677903B2
公开(公告)日：2020-06-09
申请号：US15367982
申请日：2016-12-02
Applicant: Texas Instruments Incorporated
Inventor： Ravikumar Pattipaka , Raja Sekhar Kanakamedala , Aravind Miriyala , Vajeed Nimran P A , Sandeep Kesrimal Oswal
Abstract: Methods and apparatus for reducing a transient glitch in ultrasound applications are disclosed. An example apparatus includes a transducer to (A) output a signal during a transmit phase and (B) receive a reflected signal corresponding to the signal during a receive phase; a receiver switch coupled to the transducer at a first node, the receiver switch to (A) open during the transmit phase and (B) close during the receive phase; and a clamp coupled to the transducer at the first node, the clamp to provide a high impedance during the transmit phase and the receive phase and provide a low impedance during a transient phase.
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公开(公告)号：US10484636B2
公开(公告)日：2019-11-19
申请号：US15926025
申请日：2018-03-20
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Sravana Kumar Goli , Jeevan Mithra , Nagesh Surendranath , Sandeep Kesrimal Oswal
IPC: H04N5/3745 , H04N5/361 , H04N5/365 , H04N5/374 , H04N5/363
Abstract: An active pixel sensor a plurality of sensor pixels disposed in a row, a plurality of sensor pixels in a column, and steering circuitry coupled to each of the sensor pixels. Each of the sensor pixels includes a first pixel circuit, and a second pixel circuit. For each of the sensor pixels, the steering circuitry includes a first switch, a second switch, a third switch, and a fourth switch. The first switch and the second switch are connected in series to route an input signal to the first pixel circuit. The third switch and a fourth switch are connected in parallel to route the input signal to the second pixel circuit.
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公开(公告)号：US10319362B2
公开(公告)日：2019-06-11
申请号：US15793537
申请日：2017-10-25
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ravikumar Pattipaka , Raja Sekhar Kanakamedala , Aravind Miriyala , Sandeep Kesrimal Oswal
IPC: G10K11/34 , H03K17/687 , H03K19/003 , H03K3/356 , G10K11/04 , G06F1/3203 , H03K17/08 , G11C11/413 , H03K19/0185 , B06B1/02 , H03K17/56
Abstract: The disclosure provides a level shifter. The level shifter includes a first logic block that receives an input signal and generates a primary pulsed input. A first transistor is coupled to the first logic block and a first node. A gate terminal of the first transistor receives the primary pulsed input. A latch is coupled to the first node and a second node. A second logic block receives the input signal and generates a secondary pulsed input. A second transistor is coupled between the second logic block and the second node. A gate terminal of the second transistor receives the secondary pulsed input.
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公开(公告)号：US10180351B2
公开(公告)日：2019-01-15
申请号：US15373242
申请日：2016-12-08
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Rakul Viswanath , Nagesh Surendranath , Sandeep Kesrimal Oswal
Abstract: A circuit includes a charge sensitive amplifier (CSA) that includes an input to receive current from a photon sensor and generates an output signal that represents photons received by the sensor and dark current of the sensor. A control circuit generates a compensation signal to offset the dark current from the photon sensor at the input of the CSA. The control circuit couples feedback from the CSA to enable the compensation signal if the photon current received from the sensor is below a predetermined threshold. The control circuit decouples the feedback from the CSA to disable the compensation signal if the photon current received from the sensor is above the predetermined threshold.
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Patent Agency Ranking
公开(公告)号：US10111624B2
公开(公告)日：2018-10-30
申请号：US15936029
申请日：2018-03-26
Applicant: Texas Instruments Incorporated
Abstract: The disclosure provides a circuit for impedance measurement. The circuit includes an excitation source coupled between a first set of input switches. An impedance network is coupled between the first set of input switches and a first set of output switches. The impedance network includes a body impedance and a plurality of electrode impedances. A sense circuit is coupled to the first set of output switches. The sense circuit measures the body impedance and at least one electrode impedance of the plurality of electrode impedances.
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公开(公告)号：US20180234107A1
公开(公告)日：2018-08-16
申请号：US15950690
申请日：2018-04-11
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Jagannathan Venkataraman , Prabu Sankar Thirugnanam , Raja Reddy Patukuri , Sandeep Kesrimal Oswal
IPC: H03M3/00
Abstract: The disclosure provides a receiver with high dynamic range. The receiver includes a photodiode that generates a current signal. A coupling capacitor is coupled to the photodiode, and generates a modulation signal in response to the current signal received from the photodiode. A sigma delta analog to digital converter (ADC) is coupled to the coupling capacitor, and generates a digital data in response to the modulation signal. A digital mixer is coupled to the sigma delta ADC, and generates an in-phase component and a quadrature component corresponding to the digital data. A processor is coupled to the digital mixer, and processes the in-phase component and the quadrature component corresponding to the digital data.
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公开(公告)号：US20150305648A1
公开(公告)日：2015-10-29
申请号：US14694500
申请日：2015-04-23
Applicant: Texas Instruments Incorporated
Abstract: The disclosure provides a circuit for impedance measurement. The circuit includes an excitation source that generates an excitation signal. A switched resistor network is coupled to the excitation source, and generates an output signal in response to the excitation signal. A sense circuit is coupled to the switched resistor network, and generates a sense signal in response to the output signal. A comparator is coupled to the sense circuit, and generates a clock signal in response to the sense signal. A mixer is coupled to the sense circuit, and multiplies the sense signal and the clock signal to generate a rectified signal. A low pass filter is coupled to the mixer and filters the rectified signal to generate an averaged signal. A processor is coupled to the low pass filter and measures a body impedance from the averaged signal.
Abstract translation: 本公开提供了一种用于阻抗测量的电路。 该电路包括产生激励信号的激励源。 开关电阻网络耦合到激励源，并且响应于激励信号产生输出信号。 感测电路耦合到开关电阻网络，并且响应于输出信号产生感测信号。 比较器耦合到感测电路，并响应于感测信号产生时钟信号。 混频器耦合到感测电路，并且将感测信号和时钟信号相乘以产生整流信号。 低通滤波器耦合到混频器并对整流信号进行滤波以产生平均信号。 处理器耦合到低通滤波器并根据平均信号测量身体阻抗。
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19.发明申请公开(公告)号：US20150256151A1
公开(公告)日：2015-09-10
申请号：US14640175
申请日：2015-03-06
Applicant: Texas Instruments Incorporated
Inventor： Rahul Sharma , Vajeed Nimran , Jagannathan Venkataraman , Sandeep Kesrimal Oswal
CPC classification number: H03H19/004 , A61B6/032 , A61B6/4208 , G01T1/17 , H02J7/345 , H03H11/1291
Abstract: The disclosure provides a circuit that includes an integrator that generates an integrated signal in response to a current signal. A comparator is coupled to the integrator and receives the integrated signal and a primary reference voltage signal. The comparator generates a feedback signal. A switched capacitor network is coupled across the integrator. The feedback signal activates the switched capacitor network.
Abstract translation: 本公开提供了一种电路，其包括响应于当前信号产生积分信号的积分器。 比较器耦合到积分器并接收积分信号和主参考电压信号。 比较器产生反馈信号。 开关电容网络跨越积分器耦合。 反馈信号激活开关电容网络。
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20.发明申请公开(公告)号：US20150054560A1
公开(公告)日：2015-02-26
申请号：US14468009
申请日：2014-08-25
Applicant: Texas Instruments Incorporated
Inventor： Sandeep Kesrimal Oswal , Eeshan Miglani , H. Mohammed Shuaeb Fazeel , Pradeep Nair , Anand Hariraj Udupa
IPC: H03K5/003
CPC classification number: H03K5/003
Abstract: DC offset correction is provided with low frequency support. A first input terminal for receiving an input signal is selectively coupled to a resistance and a capacitor that are series coupled between the first input terminal and a corresponding output terminal. In a calibration phase, the series resistance is coupled between the input terminal and the capacitor and an average voltage level of the input is stored on capacitor. In a signal processing phase, the charged capacitor is coupled in series between the input terminal and the output terminal while the resistance is bypassed. The output signal obtained contains the high and low frequency components of the input signal, while the DC offset in the input signal is removed from the output signal. A differential circuit and methods are disclosed. Additional embodiments are disclosed.
Abstract translation: DC偏移校正提供低频支持。 用于接收输入信号的第一输入端选择性地耦合到串联耦合在第一输入端和相应输出端之间的电阻和电容。 在校准阶段，串联电阻耦合在输入端和电容之间，输入的平均电压电平存储在电容上。 在信号处理阶段，当电阻被旁路时，充电的电容器串联在输入端子和输出端子之间。 获得的输出信号包含输入信号的高频和低频分量，输入信号中的直流偏移从输出信号中去除。 公开了一种差分电路和方法。 公开了另外的实施例。
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