ADF4154 Analog Devices, ADF4154 Datasheet - Page 7

• Manufacturer Part Number: ADF4154
• Description: Fractional-n Frequency Synthesizer
• Manufacturer: Analog Devices

TYPICAL PERFORMANCE CHARACTERISTICS
Figure 5 to Figure 10, and Figure 12: RF
Modulus = 130, Fraction = 30/130, and I
Loop Bandwidth = 20 kHz, Reference = 26 MHz, VCO = Vari-L VCO190-1750T, Evaluation Board = EVAL-ADF4154EB1. Measurements
were taken on the HP8562E spectrum analyzer.
–100
–100
–100
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–30
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–50
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–90
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–30
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–90
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–30
–40
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–80
–90
0
0
0
Figure 6. Phase Noise (Low Noise Mode and Spur Mode)
–2kHz
–2kHz
–2kHz
Figure 5. Phase Noise (Lowest Noise Mode)
Figure 7. Phase Noise (Lowest Spur Mode)
REFERENCE
LEVEL = –4.2dBm
REFERENCE
LEVEL = –4.2dBm
REFERENCE
LEVEL = –4dBm
–1kHz
–1kHz
–1kHz
1.722GHz
1.722GHz
1.722GHz
V
I
PFD FREQUENCY = 26MHz
CHANNEL STEP = 200kHz
LOOP BANDWIDTH = 20kHz
LOW NOISE AND
SPUR MODE
V
I
PFD FREQUENCY = 26MHz
CHANNEL STEP = 200kHz
LOOP BANDWIDTH = 20kHz
LOWEST SPUR MODE
V
I
PFD FREQUENCY = 26MHz
CHANNEL STEP = 200kHz
LOOP BANDWIDTH = 20kHz
LOWEST NOISE MODE
CP
CP
CP
DD
DD
DD
N = 66 30/130
RBW = 10Hz
N = 66 30/130
RBW = 10Hz
N = 66 30/130
RBW = 10Hz
= 5mA
= 5mA
= 5mA
= 3V, V
= 3V, V
= 3V, V
OUT
CP
1kHz
1kHz
1kHz
–95dBc/Hz
–90dBc/Hz
= 5 mA.
= 1.722 GHz, PFD Frequency = 26 MHz, INT = 66, Channel Spacing = 200 kHz,
P
P
P
= 5V
= 5V
= 5V
–102dBc/Hz
2kHz
2kHz
2kHz
Rev. 0 | Page 7 of 20
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–70
–80
–90
0
0
0
–400kHz
–400kHz
–400kHz
REFERENCE
LEVEL = –4.2dBm
–71dBc@200kHz
REFERENCE
LEVEL = –4.2dBm
Figure 9. Spurs (Low Noise and Spur Mode)
–74dBc@200kHz
REFERENCE
LEVEL = –4.2dBm
Figure 10. Spurs (Lowest Spur Mode)
Figure 8. Spurs (Lowest Noise Mode)
–200kHz
–200kHz
–200kHz
1.722GHz
1.722GHz
1.722GHz
V
I
PFD FREQUENCY = 26MHz
CHANNEL STEP = 200kHz
LOOP BANDWIDTH = 20kHz
LOW NOISE AND
SPUR MODE
V
I
PFD FREQUENCY = 26MHz
CHANNEL STEP = 200kHz
LOOP BANDWIDTH = 20kHz
LOWEST NOISE MODE
CP
CP
V
I
PFD FREQUENCY = 26MHz
CHANNEL STEP = 200kHz
LOOP BANDWIDTH = 20kHz
LOWEST SPUR NOISE
DD
DD
CP
N = 66 30/130
RBW = 10Hz
N = 66 30/130
RBW = 10Hz
DD
N = 66 30/130
RBW = 10Hz
= 5mA
= 5mA
= 3V, V
= 3V, V
= 5mA
= 3V, V
200kHz
200kHz
200kHz
P
P
P
= 5V
= 5V
= 5V
400kHz
400kHz
400kHz
ADF4154