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公开(公告)号：US20190081601A1
公开(公告)日：2019-03-14
申请号：US16015657
申请日：2018-06-22
Applicant: Analog Devices Global Unlimited Company
Abstract: Differential sampling circuits may be adversely affected by changes in common mode voltage. Changes in the common mode voltage may alter the on resistance of transistor switches which it turn may mean that small signal changes are not correctly observed against a bigger common mode signal. The present disclosure relates to a way of improving the ability to resolve small differential signal changes by varying the supply or drive voltage to a component to compensate for common mode voltage changes.
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公开(公告)号：US20170257086A1
公开(公告)日：2017-09-07
申请号：US15601517
申请日：2017-05-22
Applicant: Analog Devices Global
IPC: H03K5/1534 , H03K17/687 , H03K3/0231
CPC classification number: H03K5/1534 , H03K3/0231 , H03K5/153 , H03K17/6871
Abstract: A timer circuit is provided comprising: a resistor; a programmable gain circuit coupled to amplify the reference level based upon a resistor and a selected gain; a detection circuit coupled to identify the amplified reference level based upon a resistor; a selection circuit configured to select the gain based at least in part upon the identified amplified reference level based upon a resistor; a comparator circuit configured to transition between providing a signal having a first value and providing a signal having a second value based at least in part upon comparisons of a reactive circuit element excitation level with the amplified reference level based upon a resistor and with a second reference level; and reactive circuit element excitation circuit configured to reverse excitation of the reactive circuit element in response to the comparator circuit transitioning between providing the signal having the first value and providing the signal having the second value.
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