Datasheet
Data Sheet ADF4153A
Rev. A | Page 7 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
Settings for single-sideband plots and phase noise vs. temperature plot: loop bandwidth = 20 kHz, reference = 100 MHz, PFD = 25 MHz,
carrier frequency = 1720.2 MHz, N = 68, MOD = 125, FRAC = 101, I
CP
= 2.5 mA, VCO = Mini-Circuits ROS-1800+, evaluation board =
EV-ADF4153ASD1Z, measurements taken on the Agilent E5052 signal source analyzer operating in phase noise mode.
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100 1k 10k 100k 1M 10M 100M
PHASE NOISE (dBc/Hz)
OFFSET (Hz)
11047-005
20kHz LOOP BW, LOWEST NOISE MODE,
R
F
= 1720.2MHz, PFD = 25MHz, N = 68
FRAC = 101, MOD = 125, I
CP
= 2.5mA
INTEGRATED PHASE ERROR = 0.126°
MINI-CIRCUITS ROS-1800+ VCO
Figure 5. Single-Sideband Phase Noise Plot (Lowest Noise Mode)
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100 1k 10k 100k 1M 10M 100M
PHASE NOISE (dBc/Hz)
OFFSET (Hz)
11047-006
20kHz LOOP BW, LOW NOISE AND SPUR MODE,
R
F
= 1720.2MHz, PFD = 25MHz, N = 68
FRAC = 101, MOD = 125, I
CP
= 2.5mA
INTEGRATED PHASE ERROR = 0.138°
MINI-CIRCUITS ROS-1800+ VCO
Figure 6. Single-Sideband Phase Noise Plot (Low Noise and Spur Mode)
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100 1k 10k 100k 1M 10M 100M
PHASE NOISE (dBc/Hz)
OFFSET (Hz)
1
1047-007
20kHz LOOP BW, LOW SPUR MODE,
R
F
= 1720.2MHz, PFD = 25MHz, N = 68
FRAC = 101, MOD = 125, I
CP
= 2.5mA
INTEGRATED PHASE ERROR = 0.188°
MINI-CIRCUITS ROS-1800+ VCO
Figure 7. Single-Sideband Phase Noise Plot (Low Spur Mode)
5
0
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0 0.5 1.0 1.5 2.0
2.5 3.0 3.5 4.0 4.5
AMPLITUDE (dBm)
FREQUENCY (GHz)
11047-008
PRESCALER = 4/5
PRESCALER = 8/9
Figure 8. RF Input Sensitivity
6
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0
1
2
3
4
5
0 0.5 1.0 1.5 2.0
2.5 3.0
3.5
4.0 4.5 5.0
CHARGE PUMP CURRENT (mA)
V
CP
(V)
11047-009
Figure 9. Charge Pump Output Characteristics
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PHASE NOISE (dBc/Hz)
TEMPERATURE (°C)
11047-010
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Figure 10. Phase Noise vs. Temperature