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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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AS7038RB Datenblatt(PDF) 23 Page - ams-OSRAM AG |
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AS7038RB Datenblatt(HTML) 23 Page - ams-OSRAM AG |
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23 / 127 page  Document Feedback AS7038RB Functional Description Datasheet • PUBLIC DS000726 • v2-00 • 2021-Jun-02 126 │ 22 7 Functional Description 7.1 Optical Analog Front End Figure 9: Optical Analog Front End The optical front end is used for PPG measurements. The OFE consist of: ● 4 LEDs drivers individually configurable, operated manually or controlled by the built-in Sequencer. pd1 pd2 pd3 pd4 pd_i0 pd_ampcap pd_ampres pdoffx pd_amp_en * ADC ofe1/2_sd_byp Synchronous Demodulator1,2 + BP Filter + Gain Stages TIA ofe1/2_hp_byp ofe1/2_sd_bw aa_freq 12.5-200Hz ofe1/2_en ofe1/2_hp_freq ofe1/2_hp_en ofe1/2 _gain_g Sequencer Clip Det Clip Det gain_sd h/l vth h/l vth FiFo Prefilter pdoffx_ledon any LED on? fifol, fifoh pregain ofe1 ofe2 sd1 sd2 tia pd_i1 ofe_notch _sel60 ecg_notch_byp |
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