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公开(公告)号：US10476458B2
公开(公告)日：2019-11-12
申请号：US15969242
申请日：2018-05-02
Applicant: Analog Devices Global Unlimited Company
Inventor： Jonathan Ephraim David Hurwitz , Jesus Bonache , Robert Sythes , Eamonn J. Byrne
IPC: H03F3/45
Abstract: It is often desirable to distinguish between an open circuit condition and a no signal condition. In both cases an input signal may be absent, but only one of these events represents a failure of the equipment. The present disclosure provides a way to use a difference amplifier to check for open circuit events, without requiring additional circuitry at the input of the amplifier.
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公开(公告)号：US10312930B1
公开(公告)日：2019-06-04
申请号：US15880010
申请日：2018-01-25
Applicant: Analog Devices Global Unlimited Company
Inventor： Eamonn J. Byrne , Jesus Bonache , Andrejs Tunkels
Abstract: Techniques are provided for compensating gain of a combined amplifier and analog-to-digital converter (ADC) circuit, for example, due to additional filtering added to an input of the circuit. In an example, an integrated circuit including an amplifier and ADC can include an amplifier circuit configured to receive an input signal and to amplify the input signal based on an input resistance and a feedback resistance, and to provide an amplified representation of the input signal, and an ADC circuit configured to receive an output of the amplifier, to determine a digital coefficient associated with an additional input resistance coupled to the amplifier, and to provide a compensated digital representation of the amplified representation of the input signal using the digital compensation coefficient.
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公开(公告)号：US20190245500A1
公开(公告)日：2019-08-08
申请号：US15969242
申请日：2018-05-02
Applicant: Analog Devices Global Unlimited Company
Inventor： Jonathan Ephraim David Hurwitz , Jesus Bonache , Robert Sythes , Eamonn J. Byrne
IPC: H03F3/45
Abstract: It is often desirable to distinguish between an open circuit condition and a no signal condition. In both cases an input signal may be absent, but only one of these events represents a failure of the equipment. The present disclosure provides a way to use a difference amplifier to check for open circuit events, without requiring additional circuitry at the input of the amplifier.
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