• AD8220


    i used AD8220 in simple with gain=1(no resistor).

    i expect Vo swing between +/-5 Volt according to Vo = G • ( VIN(+) – VIN(-) ).

    i have large offset at output.

    what is wrong in my circuit?

    i attached circuit file too.



  • AD8220 Input impedance


    We built this circuit. When at the "Vin1" pint I apply 100mVpp, 100Hz sinus (output impedance HighZ on signal generator), on pin7 OUT I have the same sinus wave with approx  100mVpp amplitude, which seems to be OK.

    If I apply to point …

  • AD8220 configuration


    I am trying to simulate AD8220 in a very simple configuration. G=1 (no resistor connected), single input supply of 5V and REF connected to ground. Is this a legitimate way to use this component? For input levels below 100mV (ie IN+ = 100mV, IN- …

  • AD8220 Vref

    Hello fellow engineers and enthusiasts,

    I've been using this instrumentation amplifiers for a few months now, and I absolutely love it for its robustness and pricing. I'm about to do a design that will need to adjust the offset, and the AD8220 offers…

  • AD8220: Vref voltage range

    Question on Ad8220. In the datasheet is the following text: " The allowable
    reference voltage range is a function of the gain, COMMON-MODE INPUT, and
    supply voltages ". Explain, please, more in detail this phrase. Whether you can …
  • AD8220 Noise calculations

    Dear Matt,

    I've been doing a very critical desing using AD8220. But i'm afraid that the IC might fail the design requirement at the very last moment as i found difficulties. Hence need your worthy help.

    Fist of all i need to explain my design…

  • AD8220 input impedace


    Which is correct, input impedance IN+ (or IN-) respect with Vs- (5pin) or application ground(0V)?

    AD8220 specification has both  dual supply and single supply, but datasheet shows same mention to input impedance.

    In the datasheet says below. 

  • AD8220 Ref. Voltage


    I am using AD8220 to amplify the output voltage of a Wheatstone bridge (there is only an NTC Thermistor in the bridge).

    I want to use the InAmp in single supply operation. The bridge is designed to always provide the positive input voltage to the…

  • AD8220 output voltage

    I am running the AD8220BRMZ from +/-5V, with a gain set to 100 and the REF pin set to 2.5V. I notice that the output swing limits at 4.70V despite the datasheet indicating that I should get 4.85V as a minimum. Am I interpreting the datasheet correctly…

  • AD8220 Instability in high impedance measurement

    Hi All, 

    I am using the AD8220 in a electrochemical sensor measurement application. 

    The sensor outputs a DC signal in the -1/+1 range. The signal is created between a ref electrode and a "working" electrode, as a potential difference, creating the vo…