Transimpedance amplifier-based reduction of hall sensor parasitic impedance
AssigneeTexas Instruments Incorporated
InventorsArup Polley, Srinath Ramaswamy, Baher S. Haroun, Rajarshi Mukhopadhyay
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AssigneeTexas Instruments Incorporated
InventorsArup Polley, Srinath Ramaswamy, Baher S. Haroun, Rajarshi Mukhopadhyay
Estimating the term…
A high bandwidth Hall sensor includes, for example, a Hall element for generating a first polarity Hall-signal output current. An amplifier receives, at a first input, the first polarity Hall-signal output current and outputs a feedback current of a second polarity opposite the first polarity in response. The feedback current is coupled to the first input, and the feedback current suppresses an instantaneous voltage generated by the first polarity first Hall element output current at the first input. In an embodiment, the feedback current suppresses the instantaneous voltage generated by first polarity Hall element output current such that the effects of the Hall element source impedance are reduced.
A circuit, comprising:
The circuit of claim 11, wherein the second feedback current counterpoises the inverse first Hall-signal output current such that the effect of the Hall element source impedance on a voltage associated with the inverse Hall-signal output current is suppressed at the second input.
A system, comprising:
A method, comprising:
Dependencies are inferred from the claim text.