AD620 Analog Devices, AD620 Datasheet
AD620
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AD620 Summary of contents
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... kHz, 0.28 V p-p in the 0 band, 0.1 pA/ Hz input current noise. Also, the AD620 is well suited for multiplexed applications with its settling time 0.01% and its cost is low enough to enable designs with one in- amp per channel ...
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... –V + 1.4 +V – 1.3 – –V + 1.2 +V – 1.4 – –V + 1.6 +V – 1.5 – –2– unless otherwise noted AD620B AD620S Typ Max Min Typ Max 10,000 1 10,000 0.01 0.02 0.03 0.10 0.10 0.15 0.15 0.30 0.10 0.15 0.15 0.30 0.35 0.50 0.40 0. –50 – 125 85 225 0.1 ...
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... 0.0001 2.3 18 2.3 0.9 1.3 1.1 1.6 –40 to +85 –40 to +85 –3– AD620 1 AD620S Typ Max Min Typ Max 1000 1000 800 800 120 120 12 12 1.2 0.75 1 150 150 100 72 100 3.0 6.0 3.0 6.0 0.55 0.8 0.55 0.8 0.28 0.4 0.28 0.4 100 100 ...
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... Output Short Circuit Duration . . . . . . . . . . . . . . . . . Indefinite Storage Temperature Range ( – +150 C Storage Temperature Range ( – +125 C Operating Temperature Range AD620 ( – +85 C AD620 ( – +125 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 7. Change in Input Offset Voltage vs. Warm-Up Time 1000 100 10 1 +200 +400 1 Figure 8. Voltage Noise Spectral Density vs. Frequency 1–1000) –5– AD620 +I B –I B –75 – 125 TEMPERATURE – WARM-UP TIME – Minutes GAIN = 1 GAIN = 10 ...
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... AD620–Typical Characteristics 1000 100 FREQUENCY – Hz Figure 9. Current Noise Spectral Density vs. Frequency TIME – 1 SEC/DIV Figure 10a. 0 RTI Voltage Noise ( TIME – 1 SEC/DIV Figure 10b. 0 RTI Voltage Noise (G = 1000) 1000 100 Figure 11. 0 Current Noise, 5 pA/Div ...
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... Figure 18. Input Voltage Range vs. Supply Voltage –0.0 S –0.5 –1.0 –1.5 +1.5 +1.0 +0.5 –V +0 10M Figure 19. Output Voltage Swing vs. Supply Voltage –7– AD620 G = 10, 100, 1000 1000 G = 100 0 1k 10k 100k FREQUENCY – SUPPLY VOLTAGE Volts R ...
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... AD620 15V 100 LOAD RESISTANCE – Figure 20. Output Voltage Swing vs. Load Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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... Figure 31a. Gain Nonlinearity ( ppm) –9– AD620 TO 0. 100 ...
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... Figure 33. Simplified Schematic of AD620 = THEORY OF OPERATION The AD620 is a monolithic instrumentation amplifier based on a modification of the classic three op amp approach. Absolute value trimming allows the user to program gain accurately (to 0.15 100) with only one resistor. Monolithic construc- tion and laser wafer trimming allow the tight matching and tracking of circuit components, thus ensuring the high level of performance inherent in this circuit ...
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... C to +85 C. The error budget table below shows how to calculate the effect various error sources have on circuit accuracy. Regardless of the system in which it is being used, the AD620 provides greater accuracy, and at low power and price. In simple +10V ...
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... MAX Medical ECG The low current noise of the AD620 allows its use in ECG monitors (Figure 36) where high source resistances higher are not uncommon. The AD620’s low power, low supply voltage requirements, and space-saving 8-lead mini-DIP and SOIC package offerings make it an excellent choice for battery powered data recorders ...
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... REV. E INPUT AND OUTPUT OFFSET VOLTAGE The low errors of the AD620 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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... INPUT Figure 40. Common-Mode Shield Driver GROUNDING Since the AD620 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.” In order to isolate low level analog signals from a noisy digital environment, many data-acquisition components have separate analog and digital ground pins (Figure 41) ...
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... Figure 42b. Ground Returns for Bias Currents with Thermocouple Inputs +V S – INPUT AD620 INPUT REFERENCE –V 100k 100k S –15– AD620 +V S – INPUT R AD620 G LOAD REFERENCE + INPUT – POWER SUPPLY GROUND V OUT LOAD TO POWER SUPPLY GROUND V OUT ...
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... AD620 0.210 (5.33) 0.160 (4.06) 0.115 (2.93) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). Plastic DIP (N-8) Package 0.430 (10.92) 0.348 (8.84 0.280 (7.11) 0.240 (6.10 0.325 (8.25) 0.300 (7.62) 0.060 (1.52) PIN 1 0.015 (0.38) MAX 0.130 (3.30) MIN SEATING 0.022 (0.558) 0.100 0.070 (1.77) PLANE (2.54) 0.014 (0.356) 0.045 (1.15) BSC Cerdip (Q-8) Package 0.055 (1.4) 0.005 (0.13) ...