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TLV3201: Use as Sine wave to square wave convertor

Devendra Singh1
Prodigy 60 points
Part Number: TLV3201

Hi,

Can we use TLV320 as sine wave to square wave output?

Input signal:

Sinewave, Freq:  1 KHz to 100 KHz max

Amplitude: 5 Vpp to 10 Vpp

Can TLV3201 be use for such low frequeny input?

Currently we are facing issue of having output signal distortion during signal transition of low to high and high to low at input signal amplitude 1Vpp and 1KHz. Input signal is provided from Tektronix Function generator.

However, it is observed that distortion is reduced at signal amplitude of 5 Vpp.

But i need to understand how can we overcome this issue? We also tried placing a capacitor of 1 uf between input terminals (as per section 11.1 in datasheet) but no improvement. 

Please suggest the solution.

Regards

  • 0
    TI__Mastermind 23395 points

    Devendra

    Please provide a copy of your schematic and captured waveforms from your oscilloscope so I can help interpret what is happening.

    It sound like your input is differential but then you mention testing with  Tek function generator.  I just want to make sure because the TLV3201 is a 5V device and cannot accept input voltages that exceed the power supply rails by more than a few hundred mV's as specified in the EC table.  You mentioned inputs up to 10Vpp, so I presume that means the non inverting input can swing from 0 to 5V while the non-inverting input swings from 5V to 0V providing a differential input range of -5V to 5V (10Vpp).  Please confirm.

    Chuck

  • 0 in reply to Chuck Sins
    Prodigy 60 points

    Hi,

    I am sorry if i mis-represented about input signal amplitude. I think i have mentioned 1 Vpp and not 10 Vpp.

    I will send schematic and waveform shortly.

    Thanks

  • 0 in reply to Devendra Singh1
    TI__Mastermind 23395 points

    No worries, that is better.  We will await your schematic and waveform.

    Chuck

  • 0 in reply to Chuck Sins
    TI__Mastermind 23395 points

    Devendra

    Since I have not seen any additional questions, I will assume that you were able to resolve your problem and will be closing this thread.

    If you need further assistance, you can reply and that will re-open the thread or you can create a new post.

    Chuck