• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 46 subscribers
  • Views 240 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADS1298R: Respiration Circuit MISMATCH in TI several documents

md adil
Prodigy 226 points
Part Number: ADS1298R
Other Parts Discussed in Thread: ADS1298

Respected,

I am working on a project using the ADS1298R, and i was referring the respiration circuit. But to my surprise the reference respiration circuit provided is different in all documents.

Attached is the pics and references.

1. ADS1298 Datasheet (Page No. 89)

In this Resp_Mode_P is connected to LA and IN1P & Resp_Mode_N is connected to RA and IN1N.

2. ADS1298R PDK (Page No. 41)

In this Resp_Mode_P is connected to LA and IN1N & Resp_Mode_N is connected to RA and IN1P.

3. SBAA181 (Page No 8)

In this Resp_Mode_P is connected to RA and IN1P & Resp_Mode_N is connected to LA and IN1N.

Q1. Kindly clarify which one is correct and can be referred for my circuit.

Q2. Also while i am the first channel as ECG Signal V1, then the Resp Mode P/N are not going to disturb the signals. (provided jumpers @ IN1P/IN1N).

  • 0
    TI__Mastermind 19815 points

    Hi,

      They are not mismatch, they are different options for customers to try, test, V&V, collect&analyze data to see which one might be better for their applications before making decision. 

      Regarding to the question which one is the good one or best one, there is no definite answer as it depends on customers final applications and/or system and/or product designs. So, customers have options to test and V&V, collect&analyze data before making decision.

    Are you designing/using your own PCBA? 

    Do/Have you tried use the EVM board/kit to evaluate the respiration function and note down the correct register settings, and see if it meets your applications needs?

    If yes and you think the EVM's reference design and performance meet your applications needs, I suggest to follow the EVM reference circuit design; however, during the schematic and layout design, please save/keep flexibility for other options.

    No, if you want to use/generate the RESP function and modulation signals, Channel 1 cannot be used for ECG -

    Thanks