ad626 Analog Devices, Inc., ad626 Datasheet
ad626
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ad626 Summary of contents
Page 1
... Strain Gages, and Other Low Level Signal Sources PROD UCT DE SCRIP TION The AD626 is a low cost, true sin gle-sup ply dif fer en tial am pli fi signed for am pli fy ing and low-pass fi ltering small dif fer en tial voltages from sources having a large common-mode voltage. ...
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... Hz– 0.1 Hz– kHz kHz OUT Gain = 10 0.17 Gain = 100 0.1 to 0.01 Step 2.4 A MIN MAX Gain = 10 Gain = 100 Number of Transistors –2– AD626B Typ Max Min Typ Max 0.4 1.0 0.2 0.6 0.1 1.0 0.5 0 150 120 0.014 0.016 0.014 0.016 0.014 ...
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... AD626 Unit % % ppm/°C ppm/° µV mV µV/° µV p-p µV p-p µV/ µV/ kHz V/µs V/µs µ ...
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... Peak Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +60 V Maximum Reversed Supply Voltage Limit . . . . . . . . . . . . . –34 V Output Short Circuit Duration . . . . . . . . . . . . . . . . . . Indefi nite Storage Temperature Range ( –65°C to +125°C Operating Temperature Range AD626A/AD626B . . . . . . . . . . . . . . . . . . . . –40°C to +85°C Lead Temperature Range (Soldering 60 sec +300°C Model AD626AN AD626AR ...
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... C A –4 –3 DUAL SUPPLY ONLY –2 – SUPPLY VOLTAGE – V TPC 3. Negative Output Voltage Swing vs. Supply Voltage REV. D Typical Performance Characteristics–AD626 – TPC 4. Positive Output Voltage Swing vs. Resistive Load –6 –5 – ...
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... AD626 1000 GAIN = 100 100 V = +5V S SINGLE SUPPLY GAIN = DUAL SUPPLY 0 10 100 1k 10k FREQUENCY – Hz TPC 7. Closed-Loop Gain vs. Frequency 140 120 100 0 100 1k FREQUENCY – Hz TPC 8. Common-Mode Rejection vs. Frequency 100 G = 10, 100 ...
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... TPC 17. Closed-Loop Gain vs. R 140 120 100 10k 100k 0.1 TPC 18. Power Supply Rejection vs. Frequency –7– AD626 5 SECONDS PER HORIZONTAL DIVISION = ± FOR AND + 100 1k 10k 100k VALUE OF RESISTOR R – ALL CURVES FOR ...
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... AD626 100 TPC 19. Large Signal Pulse Response. V 100 TPC 20. Large Signal Pulse Response. V 100 TPC 21. Large Signal Pulse Response. V 100 ± TPC 22. Large Signal Pulse Response 100 ± 100 TPC 23. Settling Time 100 ...
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... R6 10k 500 GND REV Figure 4 shows the main elements of the AD626. The signal in puts ERROR at Pins 1 and 8 are fi rst applied to dual resistive at ten u a tors R1 OUT through R4 whose purpose is to reduce the peak com mon-mode 10k voltage at the input to the preamplifi er—a feed back stage based on the very low drift op amp A1. This allows the dif feren tial input voltage to be accurately amplifi ...
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... This will add 0 the AD626’s qui es cent cur rent, S bringing the total to 2 mA. The AD626’s 100 kHz bandwidth and 100 (a 10 MHz gain bandwidth) is much higher than can be obtained with low power op amps in discrete dif fer en tial amplifi er circuits. Fur ther - more, the AD626 is stable driving capacitive loads (G10) or 200 pF (G100) ...
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... AD626 LOW-PASS FILTER Figure 9. Current Sensor Interface REV. D BRIDGE APPLICATION Figure 10 shows the AD626 in a typical bridge application. Here, the AD626 is set to operate at a gain of 100, using dual-sup ply . The value of voltages and offering the option of low-pass fi ltering. S 200k +IN 8 OPTIONAL ...
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... AD626 0.25 (0.0098) 0.10 (0.0040) COPLANARITY CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR ...