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AD534LH Fiches technique(PDF) 9 Page - Analog Devices |
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AD534LH Fiches technique(HTML) 9 Page - Analog Devices |
9 / 12 page AD534 REV. B –9– X1 X2 Y1 Y2 Z1 Z2 AD534 PINS 5, 6, 8 TO +15V PINS 1, 4 TO –15V EC 1 40 CR f = OUT –VS +VS SF +15V –15V CONTROL INPUT, EC 100mV TO 10V 500 2.2k 2 3 7 (= R) ADJ 1kHz +15V ADJ 8kHz 82k 39k 3-30p 0.01 (= C) AD211 = 1kHz PER VOLT WITH VALUES SHOWN OUTPUT 15V APPROX. 2k – + CALIBRATION PROCEDURE: WITH EC = 1.0V, ADJUST POT TO SET f = 1.000kHz. WITH EC = 8.0V ADJUST TRIMMER CAPACITOR TO SET f = 8.000kHz. LINEARITY WILL TYPICALLY BE WITHIN 0.1% OF FS FOR ANY OTHER INPUT. DUE TO DELAYS IN THE COMPARATOR, THIS TECHNIQUE IS NOT SUITABLE FOR MAXIMUM FREQUENCIES ABOVE 10kHz. FOR FREQUENCIES ABOVE 10kHz THE AD537 VOLTAGE-TO-FREQUENCY CONVERTER IS RECOMMENDED. A TRIANGLE-WAVE OF 5V PK APPEARS ACROSS THE 0.01 F CAPACITOR; IF USED AS AN OUTPUT, A VOLTAGE-FOLLOWER SHOULD BE INTERPOSED. Figure 14. Differential-Input Voltage-to-Frequency Converter RMS + DC AC RMS X1 X2 Y1 Y2 Z1 Z2 AD534 OUT –VS +VS SF – + 10k – + 10k 20k +15V 10k 10k 10M 5k AD741K AD741J 10 F SOLID Ta + OUTPUT 0 TO +5V 20k –15V ZERO ADJ +15V 10 F NONPOLAR INPUT 5V RMS FS 10V PEAK MATCHED TO 0.025% 10k MODE CALIBRATION PROCEDURE: WITH 'MODE' SWITCH IN 'RMS + DC' POSITION, APPLY AN INPUT OF +1.00VDC. ADJUST ZERO UNTIL OUTPUT READS SAME AS INPUT. CHECK FOR INPUTS OF 10V; OUTPUT SHOULD BE WITHIN 0.05% (5mV). ACCURACY IS MAINTAINED FROM 60Hz TO 100kHz, AND IS TYPICALLY HIGH BY 0.5% AT 1MHz FOR VIN = 4V RMS (SINE, SQUARE OR TRIANGULAR-WAVE). PROVIDED THAT THE PEAK INPUT IS NOT EXCEEDED, CREST-FACTORS UP TO AT LEAST TEN HAVE NO APPRECIABLE EFFECT ON ACCURACY . INPUT IMPEDANCE IS ABOUT 10k ; FOR HIGH (10M ) IMPEDANCE, REMOVE MODE SWITCH AND INPUT COUPLING COMPONENTS. FOR GUARANTEED SPECIFICATIONS THE AD536A AND AD636 ARE OFFERED AS A SINGLE PACKAGE RMS-TO-DC CONVERTER. Figure 15. Wideband, High-Crest Factor, RMS-to-DC Converter |
Numéro de pièce similaire - AD534LH |
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Description similaire - AD534LH |
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