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MB15C101
■ REFERENCE INFORMATION
1. Application Measurement
• Test Results
• Measurement Circuit
Results
Lockup time ±1 kHz
Un lock → Lock
Power on → Lock
2.3 ms
3.4 ms
Reference leakage (∆f = 58 kHz) –88.5 dBc
Phase noise (∆f = 1 kHz)
(∆f = 10 kHz)
(∆f = 100 kHz)
(∆f = 1 MHz)
–88.0 dBc/Hz
–111.0 dBc/Hz
–118.0 dBc/Hz
–134.0 dBc/Hz
V
CC (V) 3.0 V
VCO
Discrete VCO (Kv = 3.5 MHz/V)
Lock Frequency = 274.0 MHz (fr = 58 kHz)
VCC = 3.0 V
MB15C101
1000 pF
1000 pF
fin
OSCin
S.G
50 Ω
18 Ω 18 Ω
18 Ω
Spectrum
Analyzer
VCO
R1
C1
C2
C3
R2
C1 = 6800 pF
C2 = 0.068 µF
C3 = 4800 pF
R1 = 3.0 kΩ
R2 = 3.9 KΩ
Loop Filter