应用功能: Single Supply, Rail to Rail Low Power FET-Input Op Amp The AD820 is a precision, low power FET input op amp thatcan operate from a single supply of +3.0 V to 36 V, or dualsupplies of ±1.5 V to ±18 V. It has true single supply capabilitywith an input voltage range extending below the negative rail,allowing the AD820 to accommodate input signals belowground in the single supply mode. Output voltage swingextends to within 10 mV of each rail providing the maximum outputdynamic range.