Implementation method and device of pulse density modulation interface, electronic equipment and storage medium
A pulse density modulation and interface technology, applied in electrical components, code conversion, analog conversion, etc., can solve few problems such as PDM interface technology solutions, and achieve the effect of improving performance
Pending Publication Date: 2022-05-24
瑶芯微电子科技(上海)有限公司
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Problems solved by technology
However, the current ADC PDM interface still has a large room for improvement in the processing of digital signals, and there are few related technical solutions for PDM interface design for reference.
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[0057]In order to make the object, feature points, advantages of the present invention can be more obvious and understandable, the following will be combined with the accompanying drawings in the embodiments of the present invention, the technical solution in the embodiments of the present invention is clearly and completely described, obviously, the embodiments described are only part of the embodiments of the present invention, not all embodiments. Based on embodiments in the present invention, all other embodiments obtained by those skilled in the art without doing inventive work, are within the scope of protection of the present invention.
[0058] Figure 1 Flowchart illustrating an analog-to-digital converter pulse density modulation interface implementation method of an embodiment of the present invention, e.g., Figure 1 As shown, the embodiment of the present invention embodiment of the analog-to-digital converter pulse density modulation interface implementation method co...
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The invention provides a pulse density modulation interface implementation method and device of an analog-to-digital converter, electronic equipment and a storage medium, and the method comprises the steps: designing a circuit architecture of the analog-to-digital converter, and setting working variable parameters for components in the circuit architecture; determining a transfer function of an output signal and a transfer function of noise based on the working variable parameters; calculating an optimal solution of a transfer function of the noise under the condition that the oversampling rate OSR is a first set value, the filter order is a second set value and the quantization digit is a third set value; determining a value corresponding to the working variable parameter of the component according to the optimal solution; and selecting a corresponding component for the circuit architecture based on the value, and generating a pulse density modulation interface of the analog-to-digital converter. The PDM interface can be accurately designed, and the signal processing performance of the interface is improved.
Description
Technical field [0001] The present invention relates to an analog-to-digital converter and its design, in particular to an analog-to-digitalConverter (Analog-to-DigitalConverter, ADC) pulse density modulation (Pulse Density Modulation, PDM) interface implementation method and apparatus, electronic devices, storage media. Background [0002] Sigma-delta ADC is widely used, it is based on high oversampling rate (OVER-Sampling Ratio,OSR), the use of simple architecture can achieve a resolution of up to 24bit or more and has been widely used, in audio processing, weak signal recognition and other aspects, is used by many enterprises. [0003] Taking the audio sensor as an example, the human ear has a hearing range between 20 and 20 kHz, so the baseband f b Selected within 24kHz, the baseband frequency is low, and it is more suitable for data acquisition with sigma-delta ADCs. With the expansion of the market and the applicability of applications, digital miCs are increasingly welcome...
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IPC IPC(8): H03M3/00
CPCH03M3/378
Inventor 谈文武
Owner 瑶芯微电子科技(上海)有限公司