AD622 Analog Devices, AD622 Datasheet
AD622
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AD622 Summary of contents
Page 1
... The AD622 replaces low cost, discrete, two or three op amp instrumentation amplifier designs and offers good common- mode rejection, superior linearity, temperature stability, reliabil- ity, and board area consumption. The low cost of the AD622 eliminates the need to design discrete instrumentation amplifi- ers to meet stringent cost targets. While providing a lower cost solution, it also provides performance and space improvements ...
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... –V S – 103 103 = 2 –V S – –V S –V –2– unless otherwise noted) L AD622 Typ Max 1000 0.05 0.15 0.2 0.50 0.2 0.50 0.2 0. –50 60 125 1.0 600 1500 15 100 120 140 140 2 ...
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... IN+ REF – –3– AD622 Typ Max 1000 800 120 12 1 4.0 0.6 0.3 100 10 20 +50 +60 + 1.6 +V – 1 0.0015 2.6 18 0.9 1.3 1.1 1.5 –40 to +85 AD622 Units kHz kHz kHz kHz nV p-p V p-p V p ...
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... Input Voltage (Common Mode Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . Output Short Circuit Duration . . . . . . . . . . . . . . . . Indefinite Storage Temperature Range ( – +125 C Operating Temperature Range AD622A . . . . . . . . . . . . . . . . . . . . . . . . . . . – +85 C Lead Temperature Range (Soldering 10 seconds +300 C NOTES 1 Stresses above those listed under Absolute Maximum Ratings may cause perma- nent damage to the device. This is a stress rating only ...
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... Figure 7b. Negative PSR vs. Frequency, RTI (G = 1–1000) –5– 1000 G = 100 0 100 1k 10k 100k FREQUENCY – 1000 G = 100 0 100 1k 10k 100k FREQUENCY – 1000 G = 100 0 100 1k 10k 100k FREQUENCY – Hz AD622 ...
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... AD622–Typical Characteristics 1000 100 100 1k 10k 100k FREQUENCY – Hz Figure 8. Gain vs. Frequency 15V 100 LOAD RESISTANCE – Figure 9. Output Voltage Swing vs. Load Resistance OUTPUT STEP SIZE – Volts Figure 10. Settling Time vs. Step Size ( ...
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... The error budget detailed in Table I shows how to calculate the effect various error sources have on circuit accuracy. The AD622 provides greater accuracy at lower cost. The higher cost of the “homebrew” circuit is dominated in this case by the matched resistor network. One could also realize a “homebrew” ...
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... Typ 0.1 Hz–10 Hz Voltage Noise, V p-p GAIN SELECTION The AD622’s gain is resistor programmed by R cisely, by whatever impedance appears between Pins 1 and 8. The AD622 is designed to offer gains as close as possible to popular integer values using standard 1% resistors. Table II shows required values of R for various gains. Note that for ...
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... INPUT AND OUTPUT OFFSET VOLTAGE The low errors of the AD622 are attributed to two sources, input and output errors. The output error is divided by G when referred to the input. In practice, the input errors dominate at high gains and the output errors dominate at low gains. The ...
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... AD622 GROUNDING Since the AD622 output voltage is developed with respect to the potential on the reference terminal, it can solve many grounding problems by simply tying the REF pin to the appropriate “local ground.” The REF pin should however be tied to a low imped- ance point for optimal CMR. ...
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... BSC SOIC (SO-8) Package 0.1968 (5.00) 0.1890 (4.80 0.1574 (4.00) 0.2440 (6.20 0.1497 (3.80) 0.2284 (5.80) PIN 1 0.0688 (1.75) 0.0098 (0.25) 0.0532 (1.35) 0.0040 (0.10) 8 0.0500 0.0192 (0.49) 0 SEATING 0.0098 (0.25) (1.27) 0.0138 (0.35) PLANE BSC 0.0075 (0.19) –11– AD622 0.195 (4.95) 0.115 (2.93) 0.015 (0.381) 0.008 (0.204) 0.0196 (0.50 0.0099 (0.25) 0.0500 (1.27) 0.0160 (0.41) ...