Diff Amplifier | Cypress Semiconductor
Summary: 7 Replies, Latest post by mmoron21 on 12 May 2010 08:16 AM PDT
Verified Answers: 0
05 May 2010 09:00 AM PDT#1
I have a serious problem with a simple DiffAmplifier.
I implemented the diffblock placed into example 1 in AN2041 example:
My intention is to implement the programmable current source showed at AN2089:
Basically my problem is that I’m not be able to obtain the differential signal.
I get properly the common mode but not the differential.
I studied the SC Block in detail and the correct parameters, and these look like to be right
As the example shows for the DiffBlock I put the Diff SC Block and the global resource parameters:
- The DiffBlock parameters as in the first paper commented above.
- Slepp Timer: 512 Hz.
- Sysclock/ Power: 24MHz, +5V
- VC1= SysClk/6
- RefMux: Vdd/2+-Bandgap
- Analog Power: SC On/ Ref Hi
Are equal than an example I found working with the same parameters in:
Where implement the two examples.
Please don’t send me the AN2367 document:
I want a unipolar output differential amplifier nor a two outputs diferential amplifier.
I don’t know whats going on and I tryied many options.
Someone can help me?
Thanks for all.