AD524 Analog Devices, Inc., AD524 Datasheet
AD524
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AD524 Summary of contents
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... AD524 also has a 25 kHz bandwidth (G = 1000). To make it suitable for high speed data acquisition systems, the AD524 has an output slew rate of 5 V/μs and settles in 15 μs to 0.01% for gains 100 complete amplifier, the AD524 does not require any exter- nal components for fixed gains of 1, 10, 100 and 1000 ...
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... AD524 TABLE OF CONTENTS Features .............................................................................................. 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 8 Connection Diagrams .................................................................. 8 ESD Caution .................................................................................. 8 Typical Performance Characteristics ............................................. 9 Test Circuits ................................................................................. 14 Theory of Operation ...................................................................... 15 Input Protection .......................................................................... 15 REVISION HISTORY 11/07—Rev Rev. F Updated Format .................................................................. Universal Changes to General Description .................................................... 1 Changes to Figure 1 ...
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... Rev Page AD524 AD524B Typ Max Unit ⎡ ⎤ 000 + ± ⎢ ⎥ ⎣ R ⎦ 1000 ±0.03 % ±0.15 % ±0.35 % ± ...
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... Gain to Output REFERENCE INPUT Voltage Range Gain to Output AD524A Min 2 ) ± 100 110 ±10 ±10 Rev Page AD524B Typ Max Min Typ Max ±10 ⎛ ⎞ ⎛ − × ...
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... AD524 Unit °C ° Unit % % % % % % % % ppm/°C ppm/°C ppm/°C ppm/°C μV μV/°C mV μ ...
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... 100 110 120 ±10 1 400 150 ±10 1 Rev Page AD524C AD524S Max Min Typ Max ±15 ±50 ±100 ±10 ±35 ±100 ±10 ⎛ ⎞ ⎛ − × − ...
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... − (10/2 × AD524C Min Typ Max Min –25 +85 –55 –65 +150 –65 ±6 ±15 ±18 ±6 3.5 5.0 Rev Page AD524 AD524S Typ Max Unit 40 kΩ ± 20% 15 μ +85 °C +150 °C ±15 ±18 V 3.5 mA 5.0 ...
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... INPUT OUTPUT OFFSET NULL OFFSET NULL Figure 3. Ceramic (D) and SOIC (RW-16 and D-16) Packages OUTPUT NULL INPUT NULL AD524 TOP VIEW INPUT NULL G = 100 7 (Not to Scale) 15 REFERENCE 1000 CONNECT – ...
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... SUPPLY VOLTAGE (±V) Figure 8. Quiescent Current vs. Supply Voltage SUPPLY VOLTAGE (±V) Figure 9. Input Bias Current vs. Supply Voltage –10 –20 –30 –40 –75 – TEMPERATURE (°C) Figure 10. Input Bias Current vs. Temperature AD524 20 20 125 ...
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... AD524 INPUT VOLTAGE (±V) Figure 11. Input Bias Current vs. Input Voltage WARM-UP TIME (Minutes) Figure 12. Offset Voltage, RTI, Turn-On Drift 1000 100 100 1k 10k FREQUENCY (Hz) Figure 13. Gain vs. Frequency – ...
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... Figure 21. Low Frequency Noise (System Gain = 1000 1000 10k 100k Figure 22. Low Frequency Noise 1000 (System Gain = 100,000) Rev Page 100 1k FREQUENCY (Hz) Figure 20. Input Current Noise vs. Frequency 0.1Hz TO 10Hz 5mV 1s VERTICAL SCALE; 1 DIVISION = 5µV 0.1Hz TO 10Hz 10mV 1s VERTICAL SCALE; 1 DIVISION = 0.1µV AD524 10k ...
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... AD524 –12 TO +12 1% 0.1% – – OUTPUT STEP ( – –8 1% 0.1% +12 TO – SETTLING TIME (µs) Figure 23. Settling Time, Gain = 1 1mV 10V Figure 24. Large Signal Pulse Response and Settling Time, Gain =1 –12 TO +12 0.1% 1% – – OUTPUT STEP ( – ...
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... TO +8 – OUTPUT STEP ( – –8 1% 0.1% +12 TO – SETTLING TIME (µs) Figure 29. Settling Time, Gain = 1000 0.01% 0.01 Figure 30. Large Signal Pulse Response and Settling Time, Gain = 1000 Rev Page AD524 5mV 10V 20µs ...
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... AD524 TEST CIRCUITS INPUT 20V p-p –IN 10kΩ 0.01% 100kΩ +V 0.1% – 100 AD524 12 11kΩ 1kΩ 100Ω 1000 0.1% 0.1% 0. –V Figure 31. Settling Time Test Circuit + 50µA 50µ R53 + + C3 C4 20kΩ ...
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... THEORY OF OPERATION The AD524 is a monolithic instrumentation amplifier based on the classic 3-op amp circuit. The advantage of monolithic construction is the closely matched components that enhance the performance of the input preamplifier. The preamplifier section develops the programmed gain by the use of feedback concepts. The programmed gain is developed by varying the ...
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... S Figure 34. Operating Connections for G = 100 The AD524 can be configured for gains other than those that are internally preset; there are two methods to do this. The first method uses just an external resistor connected between Pin 3 and Pin 16 (see Figure 35), which programs the gain ...
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... The AD524 can also be configured to provide gain in the output stage. Figure 37 shows an H pad attenuator connected to the reference and sense lines of the AD524. R1, R2, and R3 should be made as low as possible to minimize the gain variation and reduction of CMRR. Varying R2 precisely sets the gain without affecting CMRR ...
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... Nonlinearities and offset and gain inaccuracies of the buffer are minimized by the loop gain of the AD524 output amplifier. Offset drift of the buffer is similarly reduced. ...
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... Because only a small current is demanded at the input of the buffer amplifier (A2) the forced current, I drift specifications of A2 must be added to the output offset and drift specifications of the AD524. 16 OUTPUT OFFSET 15 ...
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... The AD524 can also be connected for gain in the output stage. Figure 48 shows an AD711 used as an active attenuator in the output amplifier’s feedback loop. The active attenuation presents very low impedance to the feedback resistors, therefore minimizing the common-mode rejection ratio degradation ...
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... Figure 52 shows a differential transducer, unbalanced by 100 Ω, supplying signal to an AD524C. The output of the I feeds a 14-bit ADC with input voltage range. The operating temperature range is −25°C to +85°C. Therefore, the largest change in temperature, Δ ...
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... AD524 Table 5. Error Budget Analysis AD524C Error Source Specifications Gain Error ±0.25% Gain Instability 25 ppm Gain Nonlinearity ±0.003% Input Offset Voltage ±50 μV, RTI Input Offset Voltage Drift ±0.5 μV/°C – 1 Output Offset Voltage ±2 Output Offset Voltage Drift ± ...
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... REF 20kΩ 20kΩ – 10kΩ – AD7524 + + 1/2 1/2 AD712 5kΩ AD712 DECODE ADDRESS BUS Figure 54. Microprocessor Controlled Data Acquisition System Rev Page and Edition), available free from V REF V AD574A IN AGND CONTROL MICRO- PROCESSOR AD524 ...
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... AD524 OUTLINE DIMENSIONS 0.358 (9.09) 0.342 (8.69) CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 0.005 (0.13) MIN 0.080 (2.03) MAX 16 9 0.310 (7.87) PIN 1 0.220 (5.59 0.840 (21.34) MAX 0.060 (1.52) ...
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... AD524BD −40°C to +85°C AD524BDZ 1 −40°C to +85°C AD524BE −40°C to +85°C AD524CD −40°C to +85°C 1 AD524CDZ −40°C to +85°C AD524SD −55°C to +125°C AD524SD/883B −55°C to +125°C 2 5962-8853901EA −55°C to +125°C AD524SE/883B − ...
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... AD524 NOTES Rev Page ...
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... NOTES Rev Page AD524 ...
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... AD524 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00500-0-11/07(F) Rev Page ...