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AS7058 데이터시트(PDF) 53 Page - ams-OSRAM AG

부품명 AS7058
상세설명  IC for PPG, ECG and body impedance measurement
PDF  199 Pages
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제조업체  AMSOSRAM [ams-OSRAM AG]
홈페이지  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS7058 데이터시트(HTML) 53 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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Figure 45: ECG/BioZ signal processing overview
7.8
IIR filter
An IIR filter with the parameters shown below in Table 11 is used to realize the notch filter
functionality. It is possible to implement other filters by reprogramming the filter coefficients
and using two’s complement for math operations. The clock frequency should be 10 MHz.
Table 11: IIR filter parameters
IIR filter parameter
Value
MAX_NUM_OF_SOS
12
SAMPLE_BIT_WIDTH
21
COEFF_BIT_WIDTH
16
SCALE_SHIFT
14
RAM_WIDTH
8
MOD 3
SINC Filter
4th/5th Order
Decimation Rates:
16; 32; 64; 128; 256
Oversampling
Filter
Scaling
21 bit signed -> 20 bit unsigned
21 bit
IIR Filters
12 Filter bocks
20 bit
FIFO
I2C
Data transfer
to host



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