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ADF4106BCP Datasheet(PDF) 12 Page - Analog Devices |
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ADF4106BCP Datasheet(HTML) 12 Page - Analog Devices |
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12 / 20 page ![]() REV. 0 ADF4106 –12– Table IV. AB Counter Latch Map DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 C2 (0) C1 (1) A1 A2 A3 A4 A5 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 A6 CONTROL BITS 6-BIT A COUNTER 13-BIT B COUNTER DB21 RESERVED DB22 DB23 G1 THESE BITS ARE NOT USED BY THE DEVICE AND ARE DON'T CARE BITS. F4 (FUNCTION LATCH) FASTLOCK ENABLE CP GAIN OPERATION 0 0 CHARGE PUMP CURRENT SETTING 1 IS PERMANENTLY USED 0 1 CHARGE PUMP CURRENT SETTING 2 IS PERMANENTLY USED 1 0 CHARGE PUMP CURRENT SETTING 1 IS USED 1 1 CHARGE PUMP CURRENT IS SWITCHED TO SETTING 2. THE TIME SPENT IN SETTING 2 IS DEPENDENT ON WHICH FASTLOCK MODE IS USED. SEE FUNCTION LATCH DESCRIPTION A COUNTER A6 A5 .......... A2 A1 DIVIDE RATIO 0 0 .......... 0 0 0 0 0 .......... 0 1 1 0 0 .......... 1 0 2 0 0 .......... 1 1 3 . . .......... . . . . . .......... . . . . . .......... . . . 1 1 .......... 0 0 60 1 1 .......... 0 1 61 1 1 .......... 1 0 62 1 1 .......... 1 1 63 N = BP + A, P IS PRESCALER VALUE SET IN THE FUNCTION LATCH. B MUST BE GREATER THAN OR EQUAL TO A. FOR CONTINUOUSLY ADJACENT VALUES OF (N FREF), AT THE OUTPUT, NMIN IS (P 2 - P) XX X = DON’T CARE B13 B12 B11 B3 B2 B1 B COUNTER DIVIDE RATIO 0 0 0 .......... 0 0 0 NOT ALLOWED 0 0 0 .......... 0 0 1 NOT ALLOWED 0 0 0 .......... 0 1 0 NOT ALLOWED 0 0 0 .......... 1 1 1 3 . . . .......... . . . . . . . .......... . . . . . . . .......... . . . . 1 1 1 .......... 1 0 0 8188 1 1 1 .......... 1 0 1 8189 1 1 1 .......... 1 1 0 8190 1 1 1 .......... 1 1 1 8191 |
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