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AS7058 数据表(PDF) 46 Page - ams-OSRAM AG |
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AS7058 数据表(HTML) 46 Page - ams-OSRAM AG |
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46 / 199 page ![]() AS7058 Functional description Datasheet • PUBLIC • Document Feedback DS001077 • v2-00 • 2025-Sep-24 46 / 199 / Table 10: ECG sample frequencies with CGU register settings Sample frequency (Hz) Register ECG_FREQ[7:0] ECG1_FREQDIV[7:0] ECG2_FREQDIV[7:0] 400 ‘d’79 ‘d’0 500 ‘d’63 ‘d’0 1000 ‘d’31 ‘d’0 2000 ‘d’15 ‘d’0 4000 ‘d’7 ‘d’0 In addition to the correct clock configuration Sequencer 1 and Sequencer 2 do have dedicated registers for the SINC down-sampler filters to be configured. Different measurements assigned to the subsamples might require different filter configuration. Another important parameter which can be configured individually is the gain of the modulator preamplifier which can be either 1 or 2 and be configured with register SUBx_IMUX_GAIN. Since modulator 3 which is assigned to ECG/BioZ Sequencer can measure different features like ECG, BioZ or temperature it is also necessary to configure the correct input source to the ADC via input multiplexer register SUBx_IMUX_SEL2. A more detailed description of the ECG/BioZ modulator and its input structure is described in 7.7. |
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