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MB15F74UL
21
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REFERENCE INFORMATION
(for Lock-up Time, Phase Noise and Reference Leakage)
(Continued)
Test Circuit
S.G.
OSC
IN
fin
Do
LPF
VCO
Spectrum
Analyzer
7.5 k
Ω
2.7 kΩ
15000 pF
1500 pF
330 pF
V
CC = 3.0 V
Ta = + 25 °C
CP : 6 mA mode
fVCO = 2500 MHz
KV = 50 MHz/V
fr = 200 kHz
f
OSC = 13 MHz
LPF
To VCO
• PLL Reference Leakage
• PLL Phase Noise
ATTEN 10 dB
RL 0 dBm
CENTER 2.500000 GHz
RBW 3.0 kHz VBW 3.0 kHz
SPAN 1.000 MHz
SWP 280 ms
∆MKR −70.00 dB
200 kHz10 dB/
∆MKR
200 kHz
−70.00 dB
∗
D
S
ATTEN 10 dB
RL 0 dBm
CENTER 2.50000000 GHz
RBW 30 Hz VBW 30 Hz
SPAN 10.00 kHz
SWP 1.92 s
∆MKR −69.01 dB
1.00 kHz10 dB/
∗
∆MKR
1.00 kHz
−69.01 dB/Hz
D
S