• AD8561 LTSPICE simulation: latch problem

    Good morning,

     

    I would like to perform some SPICE simulations of the AD8561 comparator on LTSPICE software. However, I encounter some problems by using the .cir file from Analog Device website, and more particularly in the case of long time transient…

  • AD8561: VOH VLO related questions

    Concerning the AD8561:
    We intend to use it with hysteresis as recommended in the data sheet. We also
    intend to connect
    a 5KW pull-up resistor to +3.3V for 3V operation.
    For that configuration :

    1.      What will be VOH ? (in the data…
  • AD8561 / AD8561S - input voltage range

    Dear Community,

    I have an question related to AD8561/AD8561S (Ultrafast 7 ns Single Supply Comparator): what is the input volatge range (or Input Common-Mode Voltage Range) when this device is powered from +7V (V+=7V, V-=GND)?  I can't see any information…

  • RE: Transient simulation using AD8561.cir file on LTSPICE: Latch failure

    Hi Julien,

    The updated / corrected AD8561 LTspice model is now released.

    Please do Sync Release on your LTspice installation and you'll get the updated model in your system.

    Regards,

    Hooman

  • Ad8561

    AD8561 Latch function not working in simulation.  I'm simulating a circuit using the AD8561 and not able to get the latch function to work. I set up a simple test circuit with 5V pwr and GND (a single supply circuit). I put a reference voltage on one…

  • Comparator input noise voltage (density) - in AD8561 and similar

    I'm working with a mature high power Class D amplifier design, and am having some issues with noise generated in the naturally-sampled PWM modulator. This comprises a simple analog ramp generator (an op-amp based integrator, creating a roughly 150kHz…

  • AD8561 hysteresis

    hello,

    In the AD8561 datasheet, page 8, a hysteresis circuit is shown:

    The capacitor CF is added to introduce a pole into the feedback network.

    The calculation for this pole is: 

    Is this formula correct? In the formula, I would use R1 instead of R2.

  • AD8561 Hysteresis

    hello,

    In the AD8561 datasheet, page 8, a hysteresis circuit is shown:

    The capacitor CF is added to introduce a pole into the feedback network.

    The calculation for this pole is: 

    Is this formula correct? In the formula, I would use R1 instead of R2.

  • AD8561 offset voltage measurement

    Hi Team,

    The Vout is getting saturated on trying to determine the input offset voltage of AD8561 through below servo circuit.

    Please help to confirm whether this approach is good to proceed and also please provide your suggestion.

    Thank you,

    Bala Suren…