AFE 4300

Wenceslao Garro

Other Parts Discussed in Thread: AFE4300EVM-PDK, AFE4300

What resistance values are recommended for Rx and Ry to calibrate the AFE 4300?

Could you provide a photo of how to connect the resistance to J36 for injecting current and J10 for voltage reading? What values should I expect.

over 11 years ago

0 Amy Schnoor over 11 years ago

TI__Mastermind 18285 points

Wenceslao,

We have received your post and hope to have a response back to you soon.

0 Wenceslao Garro over 11 years ago in reply to Amy Schnoor

Prodigy 50 points

Hi Amy,
We understand that the success of our project depends on the component used; for that reason, we are evaluating products design and manufacture by Texas Instruments; therefore, we would like to make contact with an engineer that can guide us on the usage of this module so we can integrate the impedance analyzer with another device via ARDUINO.
We have identified some aspect such as:
- Can the impedance analyzer be separated from the MM3? Based on the specs the AFE4300EVM-PDK is composed by two modules the mother board MM3 and the impedance analyzer so we are assuming that it is possible
- For an external power supply of the impedance analyzer what are the pins and type of connector to be used? What is the recommended voltage and current?
- How can we capture the readings from the impedance analyzer? Can we get that information for an specific pin(s) on J101 and/or J103?

Please let me know if we can contact you by phone or via Skype or email or let me know who do we need to contact to get someone because we are at the point of deciding the components for our project. Please feel free to contact me if you have any questions at (954) 294 2030

Thanks in advance for your prompt response.

Wenceslao Garro
FIU-Team Leader Senior Design Project

0 Amy Schnoor over 11 years ago in reply to Wenceslao Garro

TI__Mastermind 18285 points

Wenceslao,

The MMB3 board is simply a SPI interface to our AFE4300, so theoretically the functionality can be replaced.

We have a few materials on our product folder that would be beneficial for you to read. I included the link below.

www.ti.com/.../technicaldocuments

See page 2 of the datasheet for our recommended operating conditions.

When you refer to "impedance analyzer" are you referring to our EVM?

The data is received from the ADC and our datasheet goes into more detail on how to read the data. It looks like there is not much interest in the weight scale signal chain, so you can jump to page 13 of the datasheet to understand how the signal chain works.