AD822

Features:

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 V
HIGH LOAD DRIVE
Capacitive Load Drive of 350 pF, G = 1
Minimum Output Current of 15 mA
EXCELLENT AC PERFORMANCE FOR LOW POWER
800 A Max Quiescent Current per Amplifier
Unity Gain Bandwidth: 1.8 MHz
Slew Rate of 3.0 V/s
GOOD DC PERFORMANCE
800 V Max Input Offset Voltage
2 V/8C Typ Offset Voltage Drift
25 pA Max Input Bias Current
LOW NOISE
13 nV/Hz@ 10 kHz
NO PHASE INVERSION




Application

Battery Powered Precision Instrumentation
Photodiode Preamps
Active Filters
12- to 14-Bit Data Acquisition Systems
Medical Instrumentation
Low Power References and Regulators




Pinout

Specifications



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 . . . . . . . . . . . . . . (+V_S + 0.2 V) to (20 V + V_S)
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




Description

The AD822 is a dual precision, low power FET input op ampthat can operate from a single supply of 3 V to 36 V or dual supplies of ±1.5 V to ±18 V. It has true single-supply capabilitywith an

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.