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i have a digital filter in vhdl. i applied sinusoid signal to the filter through an ADC and wanted to convert back the filter output to analog but I get rectified output from DAC.
How to convert the digital filter output to analog signal with positive and negative swing?
For BASK, perhaps DDS might not be needed(not sure). Sine table is stored in ROM, the output of this is fed to a mux that is used for selecting the amplitude value for ASK. The output of mux then goes to DAC. The output of DAC would be either sine or nothing hence BASK signal.
I think DDS...
@audioguru your comment led to me to rethink that i did some mistake in my schematic. thanks for that. The problem is solved as I said. Regarding traces, I thought it was obvious. The yellow was the input signal and the blue was the distorted output and the other two were not used. But I...
- the resistor value are fine because i already did try 10k and even other resistor values
- compensation i didn't try because i thought this would not be much of a problem
- I tried other 741 op-amp in proteus(eg. LM741) which gave me the same problem
- simulation model problem? Most of the...
I am simulating op amp 741 configured as unity gain inverter in proteus. When the signal input is ac signal with 10mV amplitude the output signal is ok but when the amplitude is 1V I get distorted output waveform as shown in the figure(2) below. Can anybody explain how to correct this...
i am trying to simulate colpitt oscillator in Proteus. the circuit is supposed to work for 100MHz. following is the schematic diagram. it is not working, i see only decreasing oscillating signal at the output.
i also doubt the value of C1 and C6 capacitor values, how are the value of...
the crystal oscillator seems not working in Proteus, there is no signal out from the crystal oscillator component. i placed a voltage probe at all the pins around it.
can i solve this problem?
the code is not working i only get the clock signal but not the data.
why there is TI=1 two times and TI =0 two times?
i am trying to use the mode 0 serial transmission mode of 8051 microcontroller but it is not working.
what value of SCON register must be placed in order to use it?
i have used
scon = 0x00;
is this correct?