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AD534SCHIPS Fiches technique(PDF) 8 Page - Analog Devices |
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AD534SCHIPS Fiches technique(HTML) 8 Page - Analog Devices |
8 / 12 page AD534–Applications Section –8– The versatility of the AD534 allows the creative designer to implement a variety of circuits such as wattmeters, frequency doublers and automatic gain controls to name but a few. X1 X2 Y1 Y2 Z1 Z2 AD534 OUTPUT = A2 – B2 10V OUT –VS +VS SF +15V –15V A – B 2 A B A + B 2 30k 10k Figure 8. Difference-of-Squares X1 X2 Y1 Y2 Z1 Z2 AD534 OUTPUT, 12V PK = EC ES 0.1V OUT –VS +VS SF +15V –15V SIGNAL INPUT, ES, 5V PK 39k 1k 0.005 F –VS CONTROL INPUT, EC, ZERO TO 5V SET GAIN 1k 2k NOTES: 1) GAIN IS X 10 PER-VOLT OF EC, ZERO TO X 50 2) WIDEBAND (10Hz – 30kHz) OUTPUT NOISE IS 3mV RMS, TYP CORRESPONDING TO A.F.S. S/N RATIO OF 70dB 3) NOISE REFERRED TO SIGNAL INPUT, WITH EC = 5V, IS 60 V RMS, TYP 4) BANDWITH IS DC TO 20kHz, –3dB, INDEPENDENT OF GAIN Figure 9. Voltage-Controlled Amplifier X1 X2 Y1 Y2 Z1 Z2 AD534 OUTPUT = (10V) sin OUT –VS +VS SF +15V –15V 4.7k 4.3k 18k 10k USING CLOSE TOLERANCE RESISTORS AND AD534L, ACCURACY OF FIT IS WITHIN 0.5% AT ALL POINTS. IS IN RADIANS. INPUT, E 0 TO +10V WHERE = E 2 10V 3k Figure 10. Sine-Function Generator X1 X2 Y1 Y2 Z1 Z2 OUTPUT = 1 EC sin t 10V EM OUT –VS +VS SF +15V –15V THE SF PIN OR A Z-ATTENUATOR CAN BE USED TO PROVIDE OVERALL SIGNAL AMPLIFICATION, OPERATION FROM A SINGLE SUPPLY POSSIBLE; BIAS Y2 TO VS/2. CARRIER INPUT EC sin t MODULATION INPUT, EM AD534 Figure 11. Linear AM Modulator 9k 1k X1 X2 Y1 Y2 Z2 Z1 AD534 OUTPUT = (100V) B A – B (1% PER VOLT) OUT –VS +VS SF +15V –15V OTHER SCALES, FROM 10% PER VOLT TO 0.1% PER VOLT CAN BE OBTAINED BY ALTERING THE FEEDBACK RATIO. B INPUT (+VE ONLY) A INPUT ( ) Figure 12. Percentage Computer X1 X2 Y1 Y2 Z1 Z2 OUTPUT, 5V/PK = (10V) 1 + y y (10V) Y WHERE y = OUT –VS +VS SF +15V –15V INPUT, Y 10V FS AD534 Figure 13. Bridge-Linearization Function |
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