Datasheet

REV. B–14–
ADF4252
Table III. RF N Divider Register Map
F12 F11 F10 F3 F2 F1 FRACTIONAL VALUE (FRAC)
000.......... 0 0 0 0
000.......... 0 0 1 1
000.......... 0 1 0 2
000.......... 0 1 1 3
............. . . . .
............. . . . .
............. . . . .
111.......... 1 0 0 4092
111.......... 1 0 1 4093
111.......... 1 1 0 4094
111.......... 1 1 1 4095
RF INTEGER
N8 N7 N6 N5 N4 N3 N2 N1
00011111 31
00100000 32
00100001 33
00100010 34
........ .
........ .
........ .
11111101 253
11111110 254
11111111 255
P1
0
DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
C2 (0)
C1 (0)F1F2F3F4F5F6F7
F8
F9F10F11F12N1N3
N4N5
N6
CONTROL
BITS
12-BIT RF FRACTIONAL VALUE (FRAC)
DB23 DB22
DB21
N7
N8
P1
C3 (0)
8-BIT RF INTEGER VALUE (INT)
N2
RESERVED
VALUE (INT)*
*WHEN P = 8/9, N
MIN
= 91
RESERVED
RESERVED