公开(公告)号：US10333543B1

公开(公告)日：2019-06-25

申请号：US15975885

申请日：2018-05-10

Applicant: Analog Devices Global Unlimited Company

Inventor： Christopher Peter Hurrell ,  Hongxing Li ,  Colin G. Lyden

IPC: H03M1/20 ,  H03M1/06 ,  H03M1/46

Abstract: Techniques that allow application of noise-shaped dither without applying dither at sampling, resulting in the analog-to-digital converter (ADC) circuit advantageously being balanced during acquisition. Balancing the ADC circuit at acquisition can reduce the risk of sampling digital interferences that can couple in through the references or substrates.

公开(公告)号：US10236905B1

公开(公告)日：2019-03-19

申请号：US15901177

申请日：2018-02-21

Applicant: Analog Devices Global Unlimited Company

Inventor： Andreas Callanan ,  Adrian Sherry ,  Gabriel Banarie ,  Colin G. Lyden

IPC: H03M1/06 ,  H03M3/00 ,  H03H17/02

Abstract: Techniques to increase a data throughput rate of a filter circuit by preloading selectable memory circuits of the filter circuit with reference data, sampling input data at an input of the filter circuit, combining the sampled input data with the preloaded reference data, and generating a filter output based on the combined sampled input data and preloaded reference data.

公开(公告)号：US20180360359A1

公开(公告)日：2018-12-20

申请号：US15622846

申请日：2017-06-14

Applicant: Analog Devices Global

Inventor： John Jude O'Donnell ,  Colin G. Lyden ,  Michael C.W. Coln

IPC: A61B5/1455 ,  G01J1/46 ,  G01J1/08 ,  A61B5/00

Abstract: A photometry device can include a first LED to emit light to a target in response to a first current through the first LED, a second LED to emit light to the target in response to a second current through the second LED, and an inductor, coupled to the first and second LEDs, to store energy associated with at least one of the first and second currents.

公开(公告)号：US20170237268A1

公开(公告)日：2017-08-17

申请号：US15169981

申请日：2016-06-01

Applicant: Analog Devices Global

Inventor： Paraic Brannick ,  Colin G. Lyden ,  Damien J. McCartney ,  Gabriel Banarie

IPC: H02J7/00 ,  H03M1/20

CPC classification number: H02J7/007 ,  G04F10/005 ,  H02J7/345 ,  H03M1/201 ,  H03M1/50 ,  H03M1/52 ,  H03M1/60

Abstract: A charge rebalancing integration circuit can help keep an output node of a front-end integration circuit within a specified range, e.g., without requiring resetting of the integration capacitor. The process of monitoring and rebalancing the integration circuit can operate on a much shorter time base than the integration time period, which can allow for multiple charge balancing charge transfer events during the integration time period, and sampling of the integration capacitor once per integration time period, such as at the end of that integration time period. Information about the charge rebalancing can be used to adjust subsequent discrete-time signal processing, such as digitized values of the samples. Improved dynamic range and noise performance is possible. Computed tomography (CT) imaging and other use cases are described, including those with variable integration periods.

公开(公告)号：US20170023506A1

公开(公告)日：2017-01-26

申请号：US15187398

申请日：2016-06-20

Applicant: Analog Devices Global

Inventor： Colin G. Lyden ,  Donal Bourke ,  Dennis A. Dempsey ,  Dermot G. O'Keeffe ,  Patrick C. Kirby

IPC: G01N27/02 ,  G01N27/49 ,  G01N27/327 ,  H03F3/45 ,  H03F1/34

CPC classification number: G01N27/028 ,  G01N27/3273 ,  G01N27/49 ,  H03F1/34 ,  H03F3/45475 ,  H03F2200/261 ,  H03F2200/462 ,  H03L5/00

Abstract: A control circuit for use with a four terminal sensor, the sensor having first and second drive terminals and first and second measurement terminals, the control circuit arranged to drive at least one of the first and second drive terminals with an excitation signal, to sense a voltage difference between the first and second measurement terminals, and control the excitation signal such that the voltage difference between the first and second measurement terminals is within a target range of voltages, and wherein the control circuit includes N poles in its transfer characteristic and N−1 zeros in its transfer characteristic such that when a loop gain falls to unity the phase shift around a closed loop is not substantially 2π radians or a multiple thereof, where N is greater than 1.

Abstract translation: 一种与四端子传感器一起使用的控制电路，所述传感器具有第一和第二驱动端子以及第一和第二测量端子，所述控制电路被布置成用激励信号驱动第一和第二驱动端子中的至少一个，以感测 并且控制所述激励信号，使得所述第一测量端子与所述第二测量端子之间的电压差在目标电压范围内，并且其中所述控制电路在其传输特性中包括N极，并且所述N- 1的零传递特性使得当环路增益下降到1时，围绕闭环的相移基本上不是2π弧度或其倍数，其中N大于1。