Hi.everybody.
I am using an alteral DE2 board to obtain result from a ADC (ADS7861). Since the DE2 output voltage is 3.3V only, i use a voltage translator, TXS0108EPWR for the conversion from 3.3V to 5V for ADC. However, i found out the result has lot of noise and it is so sensitive. A small movement of wire connected between DE2 and TXS or TXS and ADC will affect the output result.
The signal(clock signal) form the output of TXS has a long rise time and this make it look like a sawtooth wave.Even the output from DE2 after connected to TXS through the wire, it has attached some amount of noise.
The connection : DE2 board --> wire (flexible wire)--> TXS0108E --> flexible wire --> ADC
Can anyone help me to reduce the rise time so that i can receive a proper clock signal waveform.
