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ADF9010 Datasheet(PDF) 19 Page - Analog Devices |
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ADF9010 Datasheet(HTML) 19 Page - Analog Devices |
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19 / 28 page ![]() ADF9010 Rev. 0 | Page 19 of 28 C2 (1) C2 (0) A1 A2 A3 A4 A5 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 5-BIT A COUNTER 13-BIT B COUNTER PRESCALER G1 P2 P1 M1 DB2 DB1 DB0 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB21 DB22 DB23 CONTROL BITS X = DON’T CARE CP GAIN OPERATION 0 USE THE PROGRAMMED CHARGE PUMP CURRENT SETTING FROM CONTROL REGISTER 1 USE THE MAXIMUM CHARGE PUMP CURRENT SETTING B12 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 .......... 0 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 A5 .......... A2 A1 A COUNTER DIVIDE RATIO 0 .......... 0 0 0 0 .......... 0 1 1 0 .......... 1 0 2 0 .......... 1 1 3 . .......... . . . . .......... . . . . .......... . . . 1 .......... 0 0 28 1 .......... 0 1 29 1 .......... 1 0 30 1 .......... 1 1 31 N = BP + A, P IS THE PRESCALER VALUE SET IN THE FUNCTION LATCH. B MUST BE GREATER THAN OR EQUAL TO A. FOR CONTINUOUSLY ADJACENT VALUES OF (N × F REF) AT THE OUTPUT, NMIN IS (P2 – P). P2 P1 PRESCALER VALUE 00 8/9 01 16/17 10 32/33 11 32/33 N DIV MUX OPERATION 0 VCO FEEDBACK TO N DIVIDER. 1 MUX FEEDBACK TO N DIVIDER. Figure 25. LO Latch |
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