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ADAS1000-4BSTZ 数据表(PDF) 30 Page - Analog Devices

部件名 ADAS1000-4BSTZ
功能描述  Low Power, Three Electrode Electrocardiogram (ECG) Analog Front End
PDF  80 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADAS1000-4BSTZ 数据表(HTML) 30 Page - Analog Devices

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ADAS1000-3/ADAS1000-4
Data Sheet
Figure 56. Electrode and Lead Configurations, Analog Lead Mode
Figure 57. Electrode and Lead Configurations, Digital Lead Mode
VCM = WCT = (LA + LL + RA)/3
COMMON-
MODE AMP
ECG1_LA
ECG2_LL
ECG3_RA
AMP
ADC
ADC
ADC
CM_IN
FOR EXAMPLE RA
COMMON
ELECTRODE CE IN
+
–
CM_OUT/WCT
LEAD I
(LA – RA)
LEAD III
(LL – LA)
LEAD II
(LL – RA)*
*GETS MULITPLED
BY –1 IN DIGITAL
AMP
+
–
AMP
+
–
MODE
COMMENT
WORD1
WORD2
WORD3
ANALOG LEAD
LEAD I
(LA − RA)
LEAD II
(LL − RA)
LEAD III
(LL − LA)
ANALOG LEAD
0x0A
[4]1
0x01
[10]2
0x05
[8]3
0
1
0
1REGISTER FRMCTL, BIT DATAFMT: 0 = LEAD/VECTOR MODE; 1 = ELECTRODE MODE.
2REGISTER ECGCTL, BIT CHCONFIG: 0 = SINGLE ENDED INPUT (DIGITAL LEAD MODE OR ELECTRODE MODE); 1 = DIFFERENTIAL IN PUT (ANALOG LEAD MODE).
3REGISTER CMREFCTL, BIT CEREFEN: 0 = CE DISABLED; 1 = CE ENABLED.
COMMON-
MODE AMP
AMP
ADC
ADC
ADC
CM_IN
FOR EXAMPLE, RA
COMMON
ELECTRODE CE IN
+
–
CM_OUT/WCT
AMP
+
–
AMP
+
–
ECG1_LA
ECG 2_LL
ECG3_RA
LEAD I
LA – RA
LEAD II
LL – RA
LEAD III
LL – LA
VCM = WCT = (LA + LL + RA)/3
MODE
COMMENT
WORD1
WORD2
WORD3
LEAD I
(LA − RA)
LEAD II
(LL − RA)
LEAD III
(LL − LA)
SINGLE-ENDED
INPUT, DIGITALLY
CALCULATED LEADS
DIGITAL LEAD
0x0A
[4]1
0x01
[10]2
0x05
[8]3
0
0
0
1REGISTER FRMCTL, BIT DATAFMT: 0 = LEAD/VECTOR MODE; 1 = ELECTRODE MODE.
2REGISTER ECGCTL, BIT CHCONFIG: 0 = SINGLE ENDED INPUT (DIGITAL LEAD MODE OR ELECTRODE MODE); 1 = DIFFERENTIAL IN PUT (ANALOG LEAD MODE).
3REGISTER CMREFCTL, BIT CEREFEN: 0 = CE DISABLED; 1 = CE ENABLED.
DIGITAL DOMAIN
CALCULATIONS
Rev. B | Page 30 of 80



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