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AS7058 bảng dữ liệu(PDF) 37 Page - ams-OSRAM AG

tên linh kiện AS7058
Giải thích chi tiết về linh kiện  IC for PPG, ECG and body impedance measurement
PDF  199 Pages
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nhà sản xuất  AMSOSRAM [ams-OSRAM AG]
Trang chủ  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS7058 bảng dữ liệu(HTML) 37 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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The assignment of the photodiodes is for both measurements the same. The programmed
DAC offset current is used for the first measurement and can also be used for the second
measurement (DIS_LEDOFF = 1). Alternatively, it is possible to use also a different value,
which is stored to IOS_LEDOFF register, for all subsamples if register DIS_LEDOFF bit is
cleared.
Figure 32: Double measurement mode – simplified timing diagram
Photodiode Selection
Photodiode Offset Current
LED On
ADC Modulator
ADC Reset
SINC Downsampler
Sample Data LED On
Sample Data LED ON
Sample Data LED Off
Sample Data LED Off
Result Sample Difference
DATA LED ON -DATA LED OFF
PPG
Sequencer
PPG
Sample
PPG
Sample
PPG
Sample
PPG Sample Period
PPG Sample Period
t
Subsample
1
Subsample
2
Subsample
3
Subsample
4
Subsample
5
Subsample
6
Subsample
7
Subsample
8
PPG Sub-Samples
Double PPG Measurement



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