AFE4900EVM: DNP components for ECG module and RLD circuits

Yunting Zhao

Part Number: AFE4900EVM
Other Parts Discussed in Thread: AFE4900

Hi,

I was trying to playing around with the ECG parts of the board. And I notice the predefined places to put on filters and some recommended (I suppose?) components on the schematics.

Any tips on how the circuit would performance if the DNP components are applied (with jumpers removed)?

Also, how about connecting the RLD_OUT pin directly to the circuit (not through the body) by connecting J17? Is this feasible?

If I do connect RLD_OUT to the body, is there a place on the board that I can connect to R_RLD and C_RLD as it is indicated in the datasheet P135?

Thanks

over 5 years ago

0 Yunting Zhao over 5 years ago

Prodigy 105 points

I actually reviewed more on the data sheet and it talked about the LPF and HPF. So now my question (first part) is specifically referring to—

1. the CM choke and the capacitor follows it
2. which of the two RLD pins should I connect to if I do not connect it to the body

0 Prabin Yadav over 5 years ago in reply to Yunting Zhao

TI__Genius 12575 points

Hi Yunting,

Please send your questions related to AFE4900 to biosensing_afe-support@list.ti.com along with a reference to this E2E post.

Regards,
Prabin

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AFE4900EVM: DNP components for ECG module and RLD circuits