Datasheet

REV. B
ADF4252
–9–
*Across all fractional channel steps from f = 0/130 to f = 129/130.
RF
OUT
= 1.45 GHz, Int Reg = 55, Ref = 26 MHz, and LBW = 40 kHz. Plots attained using EVAL-ADF4252EB2 evaluation board.
FREQUENCY (GHz)
–70
–120
1.430 1.4601.435
PHASE NOISE (dBc/Hz)
1.440 1.445 1.450 1.455
–75
–90
–105
–110
–115
–80
–85
–95
–100
LOWEST SPUR MODE
LOW NOISE AND SPUR MODE
LOWEST NOISE MODE
TPC 13. In-Band Phase Noise vs. Frequency*
FREQUENCY (GHz)
–10
–110
1.430 1.4601.435
SPURIOUS LEVEL (dBc)
1.440 1.445 1.450 1.455
–20
–50
–80
–90
–100
–30
–40
–60
–70
LOWEST NOISE MODE
LOWEST SPUR MODE
TPC 14. 100 kHz Spur vs. Frequency*
FREQUENCY (GHz)
–20
–120
1.430 1.4601.435
SPURIOUS LEVEL (dBc)
1.440 1.445 1.450 1.455
–30
–60
–90
–100
–110
–40
–50
–70
–80
LOWEST NOISE MODE
LOWEST SPUR MODE
TPC 15. 200 kHz Spur vs. Frequency*
FREQUENCY (GHz)
–20
–120
1.430 1.4601.435
SPURIOUS LEVEL (dBc)
1.440 1.445 1.450 1.455
–30
–60
–90
–100
–110
–40
–50
–70
–80
LOWEST NOISE MODE
LOWEST SPUR MODE
TPC 16. 400 kHz Spur vs. Frequency*
FREQUENCY (GHz)
–20
–120
1.430 1.4601.435
SPURIOUS LEVEL (dBc)
1.440 1.445 1.450 1.455
–30
–60
–90
–100
–110
–40
–50
–70
–80
LOWEST NOISE MODE
LOWEST SPUR MODE
TPC 17. 600 kHz Spur vs. Frequency*
FREQUENCY (GHz)
–20
–120
1.430 1.4601.435
SPURIOUS LEVEL (dBc)
1.440 1.445 1.450 1.455
–30
–60
–90
–100
–110
–40
–50
–70
–80
LOWEST NOISE MODE
LOWEST SPUR MODE
TPC 18. 3 MHz Spur vs. Frequency*