The AD622 is a low cost, moderately accurate instrumentation amplifier that requires only one external resistor to set any gain between 2 and 1,000. Or for a gain of 1, no external resistor is required. The AD622 is a complete difference or subtracter amplifier "system" while providing superior linearity and commonmode rejection by incorporating precision laser trimmed resistors.
The AD622 replaces low cost, discrete, two or three op amp instrumentation amplifier designs and offers good common- mode rejection, superior linearity, temperature stability, reliability, and board area consumption. The low cost of the AD622 eliminates the need to design discrete instrumentation amplifiers to meet stringent cost targets. While providing a lower cost solution, it also provides performance and space improvements.
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Transducer InterfaceLow Cost Thermocouple AmplifierIndustrial Process ControlsDifference AmplifierLow Cost Data Acquisition
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Easy to UseLow Cost SolutionHigher Performance than Two or Three Op Amp DesignUnity Gain with No External ResistorOptional Gains with One External Resistor (Gain Range 2 to 1000)Wide Power Supply Range (62.6 V to 615 V)Available in 8-Lead PDIP and SOICLow Power, 1.5 mA max Supply CurrentGOOD DC PERFORMANCE0.15% Gain Accuracy (G = 1)125 mV max Input Offset Voltage1.0 mV/8C max Input Offset Drift5 nA max Input Bias Current66 dB min Common-Mode Rejection Ratio (G = 1)EXCELLENT AC CHARACTERISTICS800 kHz Bandwidth (G = 10)10 ms Settling Time to 0.1% @ G = 11001.2 V/ms Slew Rate
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Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18 V
Internal Power Dissipation2. . . . . . . . . . . . . . . . . . . . 650 mW
Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . ±VS
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . ±25 V
Output Short Circuit Duration . . . . . . . . . . . . . . . . Indefinite
Storage Temperature Range (N, R) . . . . . . . 65°C to +125°C
Operating Temperature Range
AD622A . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to +85°C
Lead Temperature Range
(Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . +300°C
Post a Buying Lead
Required Field 
