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AD5934 Datasheet(PDF) 19 Page - Analog Devices |
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AD5934 Datasheet(HTML) 19 Page - Analog Devices |
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19 / 31 page  Data Sheet AD5934 Rev. E | Page 19 of 31 PERFORMING A FREQUENCY SWEEP PROGRAM THE AD5934 INTO POWER-DOWN MODE. PLACE THE AD5934 INTO STANDBY MODE. PROGRAM FREQUENCY SWEEP PARAMETERS INTO RELEVANT REGISTERS (1) START FREQUENCY REGISTER (2) NUMBER OF INCREMENTS REGISTER (3) FREQUENCY INCREMENT REGISTER READ VALUES FROM REAL AND IMAGINARY DATA REGISTERS. PROGRAM INITIALIZE WITH START FREQUENCY COMMAND TO THE CONTROL REGISTER. AFTER A SUFFICIENT AMOUNT OF SETTLING TIME HAS ELAPSED, PROGRAM START FREQUENCY SWEEP COMMAND IN THE CONTROL REGISTER. POLL STATUS REGISTER TO CHECK IF THE DFT CONVERSION IS COMPLETE. RESET: BY ISSUING A RESET COMMAND TO THE CONTROL REGISTER, THE DEVICE IS PLACED IN STANDBY MODE. PROGRAM THE INCREMENT FREQUENCY OR THE REPEAT FREQUENCY COMMAND TO THE CONTROL REGISTER. Y Y Y N N POLL STATUS REGISTER TO CHECK IF FREQUENCY SWEEP IS COMPLETE. Figure 24. Frequency Sweep Flowchart |
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