Not able to understand ADA4807-2ACP's behavior


I have set up the ADA4807 in simulation as shown in the picture below and I do not seem to get the gain unlike mentioned in the article A Low Power, Low Cost, Differential Input to a Single-Ended Output Amplifier | Analog Devices

What am I doing wrong here?



Parents Reply
  • +1
    •  Analog Employees 
    on Dec 21, 2020 8:58 AM 3 months ago in reply to tushar89

    Hi Tushar,

    Computing using the formula Vout = -Gain * (Vin1-Vin2), we get Vout = 2.4Vpk-pk sine wave. This means that to output this signal we need a negative supply.

    Another solution we could do here is to level shift both opamp to 1.5V so that the output signal 2.4Vpk-pk is centered at 1.5V