one question about PGA309EVM

yao Tim

Intellectual 270 points

Other Parts Discussed in Thread: PGA309EVM-USB, PGA309

hi.ti

why my PGA309EVM-USB Vexc is always low in Block Diagram? and Vexc is 0 on my board.who know how to set up?

over 9 years ago

0 Ian Williams over 9 years ago

TI__Mastermind 27715 points

Hello Yao,

I have a couple of recommendations for you when using our forum.

First, please don't post multiple threads with the same question. This does not help get an answer faster.
Second, please use a descriptive title. Currently your posts are titled "PGA309EVM questions," "one question about PGA309EVM," and "one problem about pga309evm." This does not help us quickly understand the nature of your question. Instead, use titles like "PGA309 Vexc always 0V" or "How to use PGA309EVM to calibrate real sensor."

I have answered your question about how to calibrate a real sensor in this thread: http://e2e.ti.com/support/amplifiers/etc_amplifiers__other_linear/f/18/t/358101.aspx

If you follow the steps given in the attached PowerPoint presentation, your Vexc issue will be resolved as well.

Best regards,

Ian Williams
Linear Applications Engineer
Precision Analog - Op Amps

0 yao Tim over 9 years ago in reply to Ian Williams

Intellectual 270 points

i am sorry for this .i do according that.emulator is right.but real sensor have no Vexc in Block Diagram.

0 yao Tim over 9 years ago in reply to Ian Williams

Intellectual 270 points

hi,Williams

could you tell me the function of Block Diagram and Register?

0 yao Tim over 9 years ago in reply to Ian Williams

Intellectual 270 points

hi.williams

could you help me,maybe i am not understand pga309evm fully. i have done according the data you supply.but the pga309evm not work after calibration. we are In urgent need of this chip.please give help.

best regards

0 Ian Williams over 9 years ago in reply to yao Tim

TI__Mastermind 27715 points

Hello Yao,

Unfortunately I've given you all the documentation available to help with calibrating the PGA309EVM with the emulator as well as with a real sensor. You should try posting a question on the Chinese TI forum at http://www.deyisupport.com/ for better results.

Best regards,

Ian Williams

Amplifiers

Amplifiers forum

one question about PGA309EVM