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Analog Devices AD9854

Analog Devices AD9854
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AD9854
Rev. E | Page 21 of 52
F1
F2
0
FREQUENCY
MODE
TW1
TW2
FSKDATA(PIN29)
001 (FSK NO RAMP)
F1
F2
000 (DEFAULT)
0
0
I/O UD CLK
00636-036
Figure 36. Unramped (Traditional) FSK Mode
I/O UD CLK
F1
F2
0
FREQUENCY
MODE
TW1
TW2
010 (RAMPED FSK)
F1
F2
000 (DEFAULT)
0
0
REQUIRES A POSITIVE TWOS COMPLEMENT VALUE
RAMP RATE
DFW
FSKDATA(PIN29)
00636-037
Figure 37. Ramped FSK Mode (Start at F1)
F1
F2
0
FREQUENCY
MODE
TW1
TW2
FSK DATA
010 (RAMPED FSK)
F1
F2
000 (DEFAULT)
0
0
I/O UD CLK
00636-038
Figure 38. Ramped FSK Mode (Start at F2)