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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AS7038RB датащи(PDF) 98 Page - ams-OSRAM AG |
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AS7038RB датащи(HTML) 98 Page - ams-OSRAM AG |
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98 / 127 page  Document Feedback AS7038RB Functional Description Datasheet • PUBLIC DS000726 • v2-00 • 2021-Jun-02 126 │ 97 Figure 129: ADC Internal Circuit and Multiplexer For best accuracy, the ADC can be optionally calibrated. Information If GPIO2 or GPIO3 is used as ADC input, there is no anti-aliasing filter in front of the ADC (needs to be added externally). 7.1.19 ADC Threshold At the output of the ADC converter a digital threshold can be enabled. If the output of the ADC exceeds the threshold adc_threshold, it triggers an interrupt. This mechanism can be used to identify if an object is in proximity of the sensor and then to interrupt the host. In cases where no object is detected, the host can be sleeping therefore reducing power consumption of the system. ADC Vref=1.6V AGND V_LDO Electrical Frontend TIA GPIOs vtemp adc_channel_mask_temp ADC_DATAH/L FiFo 64x16 bit entries OFE adc_channel_mask_tia adc_channel_mask_ofe1/ sd1/ofe2/sd2 adc_channel_mask_afe adc_channel_mask_ecgo adc_channel_mask_ecgi from ECG Start from top and cycle through channels where adc_channel_mask_...=1 (first channel selected seq_start 0->1) ECG_ REF 4 Pre- Filter adc_channel_mask_pregain adc_channel_mask_gpio3 adc_channel_mask_gpio2 GPIO3 GPIO2 |
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