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Adaptive analog to digital converter (ADC) multipath digital microphones

An adaptive analog-to-digital converter technology, applied in analog/digital conversion, analog conversion, transducer circuits, etc., can solve problems such as low power

Pending Publication Date: 2021-07-23
INVENSENSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, low-power, high-DR ADCs remain a challenge to deliver high-DR, feature-rich, and low-power compact digital microphones

Method used

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  • Adaptive analog to digital converter (ADC) multipath digital microphones
  • Adaptive analog to digital converter (ADC) multipath digital microphones
  • Adaptive analog to digital converter (ADC) multipath digital microphones

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Embodiment Construction

[0029] Although a brief summary is provided, the specific state of the present application will be described or shown herein for the purposes of illustration and not limitation. Therefore, the change in the disclosed embodiments disclosed in the disclosed devices, systems, and methods are intended to be included in the scope of the subject disclosed herein.

[0030] Based on various described embodiments, the present application provides a digital microphone, system, and a method for multipath digital microphone. In the non-limiting state, the example embodiment can include a MEMS digital sensor that uses adaptive analog to digital conversion in the sensor signal path. The term adaptive ADC, which is used herein can be understood to refer to one or more components, which can be configured to operate from input to the output in the ADC and / or promote variable scaling factor (eg, by variable Sampling capacitors or other components of the ADC, etc.) to allow the range or gain of th...

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Abstract

Exemplary multipath digital microphone described herein can comprise exemplary embodiments of adaptive ADC range multipath digital microphones, which allow low power to be achieved for amplifiers or gain stages, as well as for exemplary adaptive ADCs in exemplary multipath digital microphone arrangements described herein, while still providing a high DR digital microphone systems. Further non-limiting embodiments can comprise an exemplary glitch removal component configured to minimize audible artifacts associated with the change in the gain of the exemplary adaptive ADCs.

Description

[0001] Priority requirements [0002] This patent application requests the name "Architecture Proposal: Adaptive ADC Range with Two Path", filed on November 19, 2018, filed on November 4, 2019 "Adaptive Analog to Digital Converter (ADC) Multipath Digitalmicrophones "The US Non-Dispatch Application Serial No. 16 / 673, 484 is prioritized, and the entire contents of the applications are included herein. Technical field [0003] The present application relates to a digital microphone, in particular to multipath digital microphone implementation. Background technique [0004] The microphone can be exposed to the sound level (using the sound pressure level decibel unit to describe (DBSPL) in a log scale) (DBSPL)) can be in a range from very quiet (for example, less than 25dB SPL) to a very noisy (eg, 140dB SPL) Internal changing environment. In addition, the microphone typically requires its performance within a large signal range (e.g., up to 120 dB). At the same time, the microphone ne...

Claims

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Application Information

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IPC IPC(8): H03G3/00
CPCH03G3/3005H03M1/181H03G3/301H03G3/3089H04R2410/03H04R3/00H03M1/188H03M3/376H03M3/354H03M1/0604H03M1/0863
Inventor M·佩罗特
Owner INVENSENSE
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