-
31.发明授权公开(公告)号：US11984849B2
公开(公告)日：2024-05-14
申请号：US17903128
申请日：2022-09-06
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nitin Agarwal , Aniruddha Roy , Preetham Narayana Reddy
CPC classification number: H03B5/06 , H03B5/1212 , H03B5/36 , H03L5/00
Abstract: In an example, a system includes an oscillator circuit on a chip. The oscillator circuit includes a charging current generator including a current mirror and an amplifier, where the amplifier is coupled to a pin of the chip. The oscillator circuit also includes a first switch coupled to the pin, a second switch coupled to the pin and to a charging resistor, and a third switch coupled to the amplifier and an internal resistor, where the internal resistor is internal to the chip. The oscillator circuit includes a bias current source coupled to the current mirror. The system includes an external resistor coupled to the pin, where the external resistor is external to the chip. The system also includes an external capacitor coupled to the pin and coupled in parallel to the external resistor, where the external capacitor is external to the chip.
-
公开(公告)号：US11916516B2
公开(公告)日：2024-02-27
申请号：US18155261
申请日：2023-01-17
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nitin Agarwal , Kunal Karanjkar , Venkata Ramanan
CPC classification number: H03F1/0211 , H03F3/45197 , H03M1/66 , H03F2200/375 , H03F2203/45044
Abstract: Enhanced operational amplifier trim circuitry and techniques are presented herein. In one implementation, a circuit includes a reference circuit configured to produce a set of reference voltages, and a digital-to-analog conversion (DAC) circuit. The DAC circuit comprises a plurality of transistor pairs, where each pair among the plurality of transistor pairs is configured to provide portions of adjustment currents for an operational amplifier based at least on the set of reference voltages and sizing among transistors of each pair. The circuit also includes drain switching elements coupled to drain terminals of the transistors of each pair and configured to selectively couple one or more of the portions of the adjustment currents to the operational amplifier in accordance with digital trim codes.
-
公开(公告)号：US11848645B2
公开(公告)日：2023-12-19
申请号：US17509706
申请日：2021-10-25
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nitin Agarwal , Aniruddha Roy , Preetham Narayana Reddy
IPC: H03K3/0231 , H03B5/20
CPC classification number: H03B5/20 , H03K3/0231 , H03B2200/0014 , H03B2200/0034 , H03B2200/0038
Abstract: In an example, a system includes an oscillator circuit on a chip. The oscillator circuit includes a charging current generator including a current mirror, an amplifier, and an on-chip resistor, where the on-chip resistor is coupled to a pin on the chip. The oscillator circuit also includes oscillator circuitry coupled to the charging current generator, where the oscillator circuitry includes a comparator, a phase generator, a first capacitor coupled to a first resistor, and a second capacitor coupled to a second resistor. The system also includes an external resistor coupled to the pin, where the external resistor is external to the chip. The system includes an external capacitor coupled to the pin, where the external capacitor is external to the chip.
-
公开(公告)号：US11796606B2
公开(公告)日：2023-10-24
申请号：US17509836
申请日：2021-10-25
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aniruddha Roy , Nitin Agarwal , Preetham Narayana Reddy
IPC: G01R31/52 , H03B5/12 , H03K3/0231 , H03K4/502
CPC classification number: G01R31/52 , H03B5/1203 , H03K3/0231 , H03K4/502
Abstract: In an example, a system includes an oscillator circuit on a chip. The oscillator circuit includes a charging current generator including a current mirror and an amplifier, where the amplifier is coupled to a pin on the chip, and where the pin is adapted to be coupled to an external resistor, where the external resistor is external to the chip. The oscillator circuit also includes oscillator circuitry coupled to the charging current generator, where the oscillator circuitry includes a comparator, a phase generator, a first capacitor coupled to a first switch, and a second capacitor coupled to a second switch. The oscillator circuit includes leakage circuitry coupled to the current mirror, where the leakage circuitry is configured to draw a current from the current mirror proportional to a leakage current flowing through the external resistor from circuitry internal to the chip.
-
公开(公告)号：US11742810B2
公开(公告)日：2023-08-29
申请号：US17379046
申请日：2021-07-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nitin Agarwal , Aniruddha Roy
CPC classification number: H03F3/3016 , H03F1/223 , H03F2200/129
Abstract: A class AB buffer includes an output stage and an input stage. The output stage includes a first output transistor and a second output transistor. The second output transistor is coupled to the first output transistor. The input stage is coupled to the output stage. The input stage includes a first cascode transistor, a first switch, a second cascode transistor, and a second switch. The first switch is coupled to the first cascode transistor and the first output transistor. The second switch is coupled to the first switch, the second cascode transistor, and the first output transistor.
-
Patent Agency Ranking
公开(公告)号：US20230006663A1
公开(公告)日：2023-01-05
申请号：US17931557
申请日：2022-09-13
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nitin Agarwal , Venkat Ramakrishna Saripalli , Venkata Ramanan R
Abstract: In described examples, an amplifier can be arranged to generate a first stage output signal in response to an input signal. The input signal can be coupled to control a first current coupled from a first current source through a common node to generate the first stage output signal. A replica circuit can be arranged to generate a replica load signal in response to the input signal and in response to current received from the common node. A current switch can be arranged to selectively couple a second current from a second current source to the common node in response to the replica load signal.
-
公开(公告)号：US10972086B2
公开(公告)日：2021-04-06
申请号：US16378526
申请日：2019-04-08
Applicant: Texas Instruments Incorporated
Inventor： Nitin Agarwal , Venkat Ramakrishna Saripalli , Venkata Ramanan R
Abstract: In described examples, an amplifier can be arranged to generate a first stage output signal in response to an input signal. The input signal can be coupled to control a first current coupled from a first current source through a common node to generate the first stage output signal. A replica circuit can be arranged to generate a replica load signal in response to the input signal and in response to current received from the common node. A current switch can be arranged to selectively couple a second current from a second current source to the common node in response to the replica load signal.
-
公开(公告)号：US10763832B2
公开(公告)日：2020-09-01
申请号：US15853015
申请日：2017-12-22
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aniruddha Roy , Nitin Agarwal , Rajavelu Thinakaran
IPC: H03K3/0231 , H03K4/502 , H03K3/011
Abstract: Trimming components within an oscillator comprising: a trim-capable current source, wherein the trim-capable current source comprises a trimmable resistor and a trimmable current component, a comparator comprising a first input terminal that couples to the trim-capable current source and the second input terminal that couples to a reference voltage source, a switch coupled to the first input terminal and the trim-capable current source, and a trim-capable capacitor coupled to the switch, wherein the switch is coupled between the trim-capable capacitor and the trim-capable current source.
-
公开(公告)号：US20160087518A1
公开(公告)日：2016-03-24
申请号：US14492569
申请日：2014-09-22
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nitin Agarwal , Sachin Sudhir Turkewadikar
CPC classification number: H02M1/00 , H02M3/158 , H02M3/1588 , H02M2001/0003 , H02M2001/0029 , H03K17/04206 , H03K17/165 , Y02B70/1466
Abstract: Several circuits and methods for driver control of a switching circuit are disclosed. In an embodiment, a circuit for driver control of a switching circuit includes a driver circuit and a control circuit. The driver circuit is capable of being coupled to the switching circuit. The switching circuit includes a first switch and a second switch. The driver circuit is configured to control a conductive state of the switching circuit by facilitating an alternate state change of the first switch and the second switch. The control circuit is coupled to the driver circuit and is configured to detect a noise signal during a state change of the first switch. The control circuit is further configured to control the driver circuit to thereby slow down the state change of the first switch.
Abstract translation: 公开了用于开关电路的驱动器控制的几种电路和方法。 在一个实施例中，用于开关电路的驱动器控制的电路包括驱动器电路和控制电路。 驱动电路能够耦合到开关电路。 开关电路包括第一开关和第二开关。 驱动电路被配置为通过促进第一开关和第二开关的替代状态改变来控制开关电路的导通状态。 控制电路耦合到驱动电路，并被配置为在第一开关的状态改变期间检测噪声信号。 控制电路还被配置为控制驱动器电路，从而减慢第一开关的状态变化。
-
公开(公告)号：US11949417B2
公开(公告)日：2024-04-02
申请号：US17838029
申请日：2022-06-10
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aniruddha Roy , Nitin Agarwal , Rajavelu Thinakaran
Abstract: Trimming components within an oscillator comprising: a trim-capable current source, wherein the trim-capable current source comprises a trimmable resistor and a trimmable current component, a comparator comprising a first input terminal that couples to the trim-capable current source and the second input terminal that couples to a reference voltage source, a switch coupled to the first input terminal and the trim-capable current source, and a trim-capable capacitor coupled to the switch, wherein the switch is coupled between the trim-capable capacitor and the trim-capable current source.
-
-
-
-
-
-
-
-
-
Search Results
55
records
(took 0.022 seconds)
