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AS7058 Datasheet(PDF) 46 Page - ams-OSRAM AG

Part # AS7058
Description  IC for PPG, ECG and body impedance measurement
PDF  199 Pages
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Manufacturer  AMSOSRAM [ams-OSRAM AG]
Direct Link  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS7058 Datasheet(HTML) 46 Page - ams-OSRAM AG

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AS7058
Functional description
Datasheet • PUBLIC • Document Feedback
DS001077 • v2-00 • 2025-Sep-24
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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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