公开(公告)号：US20150002324A1

公开(公告)日：2015-01-01

申请号：US14321434

申请日：2014-07-01

Applicant: Texas Instruments Incorporated

Inventor： Ajit SHARMA ,  Sriram NARAYANAN ,  Srinath M. RAMASWAMY

IPC: H03M1/12

CPC classification number: H03M1/124 ,  H03M1/002 ,  H03M1/1255 ,  H03M1/126

Abstract: A mixed signal device includes an analog circuit and a digital circuit coupled to the analog circuit. The digital circuit includes a component that samples a signal at a sampling rate that is dynamically variable by the digital circuit based on the bandwidth of the incoming signal. The digital circuit is to automatically assert a signal to the analog circuit to change a bias current of the analog circuit based on a change to the sampling rate in the digital circuit.

Abstract translation: 混合信号装置包括模拟电路和耦合到模拟电路的数字电路。 数字电路包括以基于输入信号的带宽由数字电路动态变化的采样率对信号进行采样的部件。 数字电路是根据数字电路中采样率的变化，自动向模拟电路断言信号以改变模拟电路的偏置电流。

公开(公告)号：US20220179015A1

公开(公告)日：2022-06-09

申请号：US17114589

申请日：2020-12-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Arup POLLEY ,  Srinath M. RAMASWAMY ,  Jo BITO ,  Baher S. HAROUN

IPC: G01R33/00 ,  G01R33/07

Abstract: A Hall sensor circuit includes a first Hall sensor, a second Hall sensor, a first preamplifier circuit, a second preamplifier circuit, a subtractor circuit, and a duty cycling circuit. The first preamplifier circuit includes an input and an output. The input is coupled to the first Hall sensor. The second preamplifier circuit includes a first input, a second input, and an output. The first input is coupled to the second Hall sensor. The subtractor circuit includes a first input coupled to the output of the first preamplifier circuit, a second input coupled to the output of the second preamplifier circuit, and an output coupled to the second input of the second preamplifier circuit. The duty cycling circuit is coupled to the second preamplifier circuit and the second Hall sensor.

公开(公告)号：US20200182950A1

公开(公告)日：2020-06-11

申请号：US16657281

申请日：2019-10-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Baher S. HAROUN ,  Arup POLLEY ,  Srinath M. RAMASWAMY

IPC: G01R33/07 ,  H01L43/06 ,  H01L43/04

Abstract: An amplifier includes a graphene Hall sensor (GHS). The GHS includes a graphene layer formed above a substrate, a dielectric structure formed above a channel portion of the graphene layer, and a conductive gate structure formed above at least a portion of the dielectric structure above the channel portion of the graphene layer for applying a gate voltage. The GHS also includes first and second conductive excitation contact structures coupled with corresponding first and second excitation portions of the graphene layer for applying at least one of the following to the channel portion of the graphene layer: a bias voltage; and a bias current. The GHS further includes first and second conductive sense contact structures coupled with corresponding first and second sense portions of the graphene layer. The amplifier also includes a current sense amplifier (CSA) coupled to the GHS. The CSA senses current output from the GHS.

公开(公告)号：US20140368376A1

公开(公告)日：2014-12-18

申请号：US13916273

申请日：2013-06-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Phillip Michel NADEAU ,  Baher S. HAROUN ,  Srinath M. RAMASWAMY

IPC: G01S7/40

CPC classification number: G01N22/00 ,  G01J3/28 ,  G01J3/42 ,  G01S7/40 ,  G01S7/41

Abstract: A technique for removing the background from a transmission spectrum including determining performance characteristics of a detector, measuring a transmission spectrum that includes an absorption line, determining performance characteristics of a gas cell, and removing a background spectrum from the transmission spectrum by combining the transmission spectrum with the performance characteristics of the detector and the performance characteristics of the gas cell.

Abstract translation: 一种用于从传输频谱中去除背景的技术，包括确定检测器的性能特征，测量包括吸收线的透射光谱，确定气体单元的性能特征，以及通过组合透射光谱来从透射光谱中去除背景光谱 具有检测器的性能特征和气室的性能特征。