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ADF4112BCPZ 데이터시트(PDF) 16 Page - Analog Devices |
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ADF4112BCPZ 데이터시트(HTML) 16 Page - Analog Devices |
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16 / 28 page ![]() ADF4110/ADF4111/ADF4112/ADF4113 Data Sheet Rev. F | Page 16 of 28 Table 8. AB Counter Latch Map THESE BITS ARE NOT USED BY THE DEVICE AND ARE DON'T CARE BITS A6 0 0 0 0 • • • 1 1 1 1 A5 0 0 0 0 • • • 1 1 1 1 A2 0 0 1 1 • • • 0 0 1 1 A1 0 1 0 1 • • • 0 1 0 1 A COUNTER DIVIDE RATIO 0 1 2 3 • • • 60 61 62 63 ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • B13 0 0 0 0 0 • • • 1 1 1 1 B12 0 0 0 0 0 • • • 1 1 1 1 B11 0 0 0 0 0 • • • 1 1 1 1 B3 B2 B1 B COUNTER DIVIDE RATIO ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • ••••••••• • 0 0 0 0 1 • • • 1 1 1 1 0 0 1 1 0 • • • 0 0 1 1 0 1 0 1 0 • • • 0 1 0 1 NOT ALLOWED NOT ALLOWED NOT ALLOWED 3 4 • • • 8188 8189 8190 8191 13-BIT B COUNTER DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB13 B13 B12 B11 B8 B7 B6 B5 B4 B2 B1 A6 A5 A4 A3 A2 A1 B3 6-BIT A COUNTER RESERVED DB2 G1 B10 B9 *SEE TABLE 9 F4 (FUNCTION LATCH) FASTLOCK ENABLE* CP GAIN OPERATION 0 0 1 1 0 1 0 1 CHARGE PUMP CURRENT SETTING 1 IS PERMANENTLY USED. CHARGE PUMP CURRENT SETTING 2 IS PERMANENTLY USED. CHARGE PUMP CURRENT SETTING 1 IS USED. CHARGE PUMP CURRENT IS SWITCHED TO SETTING 2. THE TIME SPENT IN SETTING 2 IS DEPENDENT UPON WHICH FASTLOCK MODE IS USED. SEE FUNCTION LATCH DESCRIPTION. 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 (NX FREF), AT THE OUTPUT, NMIN IS (P2–P). X X = DON'T CARE X C2 (0) C1 (1) CONTROL BITS DB1 DB0 |
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