AD637KQ Analog Devices Inc, AD637KQ Datasheet
AD637KQ
Specifications of AD637KQ
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AD637KQ Summary of contents
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FEATURES High accuracy 0.02% maximum nonlinearity rms input 0.10% additional error to crest factor of 3 Wide bandwidth 8 MHz rms input 600 kHz at 100 mV rms Computes True rms Square ...
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AD637 TABLE OF CONTENTS Features .............................................................................................. 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 Functional Description .................................................................... 7 ...
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SPECIFICATIONS At 25°C and ±15 V dc, unless otherwise noted. Table 1. AD637J/AD637A Parameter Min Typ TRANSFER FUNCTION V = OUT CONVERSION ACCURACY 2 Total Error, Internal Trim (Figure MIN MAX vs. Supply ...
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AD637 AD637J/AD637A Parameter Min Typ OUTPUT CHARACTERISTICS Offset Voltage vs. Temperature ±0.05 Voltage Swing, 13 12.0 ±15 V Supply, 2 kΩ Load Voltage Swing, 2 ±3 V Supply, 2 kΩ Load Output Current 6 Short-Circuit ...
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ABSOLUTE MAXIMUM RATINGS Table 2. Parameter ESD Rating Supply Voltage Internal Quiescent Power Dissipation Output Short-Circuit Duration Storage Temperature Range Lead Temperature (Soldering 10 sec) Rated Operating Temperature Range AD637J, AD637K AD637A, AD637B AD637S, 5962-8963701CA Stresses above those listed under ...
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AD637 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS BUFF COMMON AD637 3 OUTPUT OFFSET TOP VIEW 4 (Not to Scale DEN INPUT 6 dB OUTPUT CONNECT Figure 2. 14-Lead SBDIP/CERDIP Pin Configuration ...
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FUNCTIONAL DESCRIPTION BUFF OUT 14 1 BUFF IN 24kΩ ABSOLUTE VALUE VOLTAGE TO CURRENT CONVERTER 6kΩ 12kΩ The AD637 embodies an implicit solution of the rms equation that overcomes the inherent limitations of straightforward rms computation. ...
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AD637 STANDARD CONNECTION The AD637 is simple to connect for a majority of rms measurements. In the standard rms connection shown in Figure 5, only a single external capacitor is required to set the averaging time constant. In this configuration, ...
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AD637K MAX 2.5 0 EXTERNAL TRIM –2.5 AD637K: 0.5mV ± 0.2% 0.25mV ± 0.05% EXTERNAL –5.0 0 0.5 1.0 INPUT LEVEL (V) Figure 7. Maximum Total Error vs. Input Level AD637K Internal and External Trims AD637 1 BUFF IN ...
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AD637 AD637 1 BUFF ABSOLUTE VALUE 3 COMMON SQUARER/ OUTPUT DIVIDER 4 OFFSET BIAS +V 4.7kΩ 25kΩ DEN 25kΩ 6 INPUT 7 dB OUTPUT RX 24kΩ Figure 11. 2-Pole Sallen-Key Filter Figure ...
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Table 5. Practical Values of C and C2 for Various Input Waveforms AV Absolute Value Input Waveform Circuit Waveform and Period and Period T 1/ Symmetrical Sine Wave Sine Wave with dc Offset T ...
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AD637 AC MEASUREMENT ACCURACY AND CREST FACTOR Crest factor is often overlooked in determining the accuracy measurement. Crest factor is defined as the ratio of the peak signal amplitude to the rms value of the signal (CF ...
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CALIBRATION Refer to Figure 20: • Set 1.00 V rms IN • Adjust R1 for 0 dB out = 0.00 V • Set 0.10 V rms IN ...
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AD637 OUTPUT 1MΩ 4 OFFSET 50kΩ ADJUST + –V S 4.7kΩ NOTES 1. VALUES CHOSEN TO GIVE 0.1% AVERAGING ERROR @ 1Hz CONNECT. LOW FREQUENCY MEASUREMENTS If ...
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EXPANDABLE BUFFER AD637 IC1 BUFF IN 1 ABSOLUTE 2 NC VALUE 3 COMMON BIAS OUTPUT SECTION 4 OFFSET SQUARER/DIVIDER + 4.7kΩ 25kΩ 6 DEN INPUT FILTER 7 dB OUTPUT BUFFER AD637 IC2 1 BUFF ...
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AD637 EVALUATION BOARD The evaluation board for the AD637 is shown in Figure 23 available at www.analog.com and ships fully tested and ready for bench testing by just adding power and signal connections. The circuit is configured for ...
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Figure 26. Evaluation Board—Secondary Side Copper Figure 27. Evaluation Board—Internal Power Plane Figure 28. Evaluaiton Board—Internal Ground Plane Rev Page AD637 ...
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AD637 Table 6. Evaluation Board Bill of Materials Qty Name Description 1 Test Loop Red 1 Test Loop Green 5 Test Loop Purple 1 Header 3-pin 2 Capacitor Tantalum 10 μ Capacitor 0.1 μ 0603 ...
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OUTLINE DIMENSIONS 0.200 (5.08) 0.200 (5.08) 0.125 (3.18) 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. 0.005 (0.13) MIN 0.080 (2.03) MAX 8 14 ...
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... AD637JRZ-RL 0°C to 70°C AD637JRZ-R7 0°C to 70°C AD637KD 0°C to 70°C AD637KDZ 0°C to 70°C AD637KQ 0°C to 70°C AD637KR 0°C to 70°C AD637KRZ 0°C to 70°C AD637SD −55°C to +125°C AD637SD/883B −55°C to +125°C AD637SQ/883B − ...