syamin0712
Member level 1
Hi guys,
I need some opinion/comment/suggestion for those who has an experience designing the absolute value circuit.
I have input of sinusoidal signal with frequency 2 MHz and amplitude around 1 Vp-p and I want to make all the negative sign of my sinusoidal input becomes positive.
So, what i planning to use is the absolute value circuit. I have found a common use of absolute value circuit as attached.
I'm use op-amp LT1360 because I found that is is suitable for high frequency (2MHz operating frequency) application with slew rate 800V/us and GBw 50Mhz.
However, I noticed that the final output of my circuit was not smooth as the absolute value or as full wave rectifier.
The result shown that curve of the full-wave rectifier was not same for each period and its not start at 0 V.
Does anybody can give comment on the result that I got? or is it because of the diodes that im used is not suitable?
Thank you in advanced.
regards,
yasmin
I need some opinion/comment/suggestion for those who has an experience designing the absolute value circuit.
I have input of sinusoidal signal with frequency 2 MHz and amplitude around 1 Vp-p and I want to make all the negative sign of my sinusoidal input becomes positive.
So, what i planning to use is the absolute value circuit. I have found a common use of absolute value circuit as attached.
I'm use op-amp LT1360 because I found that is is suitable for high frequency (2MHz operating frequency) application with slew rate 800V/us and GBw 50Mhz.
However, I noticed that the final output of my circuit was not smooth as the absolute value or as full wave rectifier.
The result shown that curve of the full-wave rectifier was not same for each period and its not start at 0 V.
Does anybody can give comment on the result that I got? or is it because of the diodes that im used is not suitable?
Thank you in advanced.
regards,
yasmin