This is a two-op-amp programmable-gain instrumentation amplifier for single-supply applications. U1A and U1B are Analog Devices AD822 or OP-213 ICs.
capability with an input voltage range extending below the negative rail, allowing the AD822 to accommodate input signals below ground in the single supply mode. Output voltage swing extends to within 10 mV of each rail providing the maximum output dynamic range.
Offset voltage of 800 µV max, offset voltage drift of 2 µV/°C,input bias currents below 25 pA and low input voltage noise provide dc precision with source impedances up to a Gigaohm. 1.8 MHz unity gain bandwidth, 93 dB THD at 10 kHz and 3 V/µs slew rate are provided with a low supply current of 800 µA per amplifier. The AD822 drives up to 350 pF of direct capacitive load as a follower, and provides a minimum output current of 15 mA. This allows the amplifier to handle a wide range of load conditions. This combination of ac and dc performance, plus the outstanding load drive capability, results in an exceptionally versatile amplifier for the single supply user.
The AD822 is available in four performance grades. The A and B grades are rated over the industrial temperature range of 40°C to +85°C. There is also a 3 volt grade-the AD822A-3V, rated over the industrial temperature range. The mil grade is rated over the military temperature range of 55°C to +125°C and is available processed on standard military drawing.
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TRUE SINGLE SUPPLY OPERATION Output Swings Rail to RailInput Voltage Range Extends Below Ground Single Supply Capability from +3 V to +36 V Dual Supply Capability from 61.5 V to 618 VHIGH LOAD DRIVE Capacitive Load Drive of 350 pF, G = 1Minimum Output Current of 15 mAEXCELLENT AC PERFORMANCE FOR LOW POWER 800 A Max Quiescent Current per Amplifier Unity Gain Bandwidth: 1.8 MHz Slew Rate of 3.0 V/sGOOD DC PERFORMANCE 800 V Max Input Offset Voltage2 V/8C Typ Offset Voltage Drift 25 pA Max Input Bias CurrentLOW NOISE 13 nV/Hz@ 10 kHzNO PHASE INVERSION
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Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18 V
Internal Power Dissipation
Plastic DIP (N) . . . . . . . . . . . . . . Observe Derating Curves
Cerdip (Q) . . . . . . . . . . . . . . . . . . Observe Derating Curves
SOIC (R) . . . . . . . . . . . . . . . . . . . Observe Derating Curves
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 (Q) . . . . . . . . . 65°C to +150°C
Storage Temperature Range (R) . . . . . . . . . 65°C to +150°C
Operating Temperature Range
AD822A/B . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to +85°C
AD822S . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to +125°C
Lead Temperature Range (Soldering 60 sec) . . . . . . . +260°C
Post a Buying Lead
Required Field 
