This buffered reference (for 1.23 V or ntore) uses a supply voltage of greater than 3 V.
The AD820 is a precision, low power FET input op amp that can operate from a single supply of 5 V to 36 V, or dual supplies of ±2.5 V to ±18 V. It has true single-supply capability, with an input
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Battery Powered Precision InstrumentationPhotodiode PreampsActive Filters12- to 14-Bit Data Acquisition SystemsMedical InstrumentationLow Power References and Regulators
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True Single Supply Operation Output Swings Rail-to-Rail Input Voltage Range Extends Below Ground Single Supply Capability from +3 V to +36 V Dual Supply Capability from 61.5 V to 618 VExcellent Load Drive Capacitive Load Drive Up to 350 pF Minimum Output Current of 15 mAExcellent AC Performance for Low Power 800 mA Max Quiescent Current Unity Gain Bandwidth: 1.8 MHz Slew Rate of 3.0 V/msExcellent DC Performance 800 mV Max Input Offset Voltage 1 mV/8C Typ Offset Voltage Drift 25 pA Max Input Bias CurrentLow Noise 13 nV/Hz @ 10 kHz
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Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18 V
Internal Power Dissipation2
Plastic DIP (N) . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.6 Watts
SOIC (R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 Watts
Input Voltage . . . . . . . . . . . . (+VS + 0.2 V) to (20 V + VS)
Output Short Circuit Duration . . . . . . . . . . . . . . . . .Indefinite
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . ±30 V
Storage Temperature Range (N) . . . . . . .65°C to +125°C
Storage Temperature Range (R) . . . . . . .65°C to +150°C
Operating Temperature Range
AD820A/B . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to +85°C
Lead Temperature Range
(Soldering 60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +260°C
Post a Buying Lead
Required Field 
