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ADAS1000-4 and ADAS1000-2 configuration for 12 leads

I am designing a 12 leads ECG by using ADAS1000-4 and ADAS1000-2. However I can not see the correct configuration of getting 12 leads (aVR, aVL, aVF, L1, L2, L3, V1, V2, V3, V4, V5, V6).

I know that is possible to get aVR, aVL, aVF, L1, L2 and L3 with ADAS1000-4, and also possible to get V1, V2, V3, V4 and V5 with ADAS1000-2. However there is one channel that is needed V6 in order to cover 12 leads and is not possible get this from available used ICs. 

How can configure/organize these ICs in order to achieve my design.

PD: Datasheet of ADAS1000-2 in page 49 indicates that is possible get 12 leads with both of these ICs.

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  • I think I solved. 

    I have Vx - Ra and I need Vx - WCT or Vx - (RA + LA + LL)/3 so...

    Vx - (RA + LA + LL)/3 + (RA - RA)

    Vx - RA - (RA + LA + LL)/3 + RA

    Vx - RA + (3*RA - RA - LA - LL)/3

    Vx - RA + (2*RA - LA - LL)/3

    Vx - RA + (- (LA - RA) - (LL - RA))/3

    finally...

    (Vx - RA) - (L1 + L2)/3 which is equal to Vx - WCT

     

Reply
  • I think I solved. 

    I have Vx - Ra and I need Vx - WCT or Vx - (RA + LA + LL)/3 so...

    Vx - (RA + LA + LL)/3 + (RA - RA)

    Vx - RA - (RA + LA + LL)/3 + RA

    Vx - RA + (3*RA - RA - LA - LL)/3

    Vx - RA + (2*RA - LA - LL)/3

    Vx - RA + (- (LA - RA) - (LL - RA))/3

    finally...

    (Vx - RA) - (L1 + L2)/3 which is equal to Vx - WCT

     

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