ADAS1000BSTZ datasheet(31/80 Pages) AD

31 / 80 page

Data Sheet

ADAS1000/ADAS1000-1/ADAS1000-2

Rev. A | Page 31 of 80

Figure 58. Flexible Front-End Configuration—Showing Analog Lead Mode Configuration Relative to Wilson Central Terminal (WCT)

Figure 59. Flexible Front-End Configuration—Showing Single-Ended Electrode Configuration

VCM = WCT = (LA + LL + RA)/3

COMMON-

MODE AMP

ECG1_LA

ECG2_LL

ECG3_RA

ECG4_V1

ECG5_V2

AMP

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)*

V1’ = V1 – WCT

V2’ = V2 – WCT

ECGCTL 0x01[10] CHCONFIG = 1

FRMCTL 0x0A[4] DATAFMT = 0

DIFFERENTIAL INPUT – LEAD FORMAT

WCT = (LA + LL + RA)/3

*GETS MULITPLED

BY –1 IN DIGITAL

AMP

–

AMP

–

AMP

–

AMP

–

VCM

COMMON-

MODE AMP

AMP

ADC

CM_IN

for example, RA

COMMON

ELECTRODE CE IN

FRMCTL 0x0A[4] = 0 CONFIGURES

SINGLE-ENDED LEAD FORMAT

WHERE LEADS ARE CALCULATED

DIGITALLY AFTER ADC PROCESSING.

–

CM_OUT/WCT

LA – VCM

LL – VCM

RA – VCM

V1 – VCM

V2 – VCM

ECGCTL 0x01[10] CHCONFIG = 0

FRMCTL 0x0A[4] DATAFMT = 1

SINGLE ENDED ELECTRODE FORMAT

COMMON MODE

CAN BE ANY

COMBINATION

OF ELECTRODES

AMP

–

AMP

–

AMP

–

AMP

–

ECG1_LA

ECG 2_LL

ECG3_RA

ECG4_V1

ECG5_V2

ADAS1000BSTZ Datasheet(PDF) 31 Page - Analog Devices

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