MB15C100 Datasheet, PDF (19/28 Pages) Fujitsu Component Limited. – IF Band PLL Frequency Synthesizer

MB15C100 Series
4. Application Measurement (L type: low sensitivity charge pump)
• Test results
Parameter
Lock-up time ± 1 kHz
Unlock → Lock
Power on → Lock
Reference leakage (∆ f = 58 kHz)
Phase noise (∆ f = 1 kHz)
(∆ f = 10 kHz)
(∆ f = 100 kHz)
(∆ f = 1 MHz)
VCC (V)
VCO
Results
3.4 ms
5.7 ms
–88.5 dBc
–90.1 dBc/Hz
–107.3 dBc/Hz
–119.0 dBc/Hz
–127.8 dBc/Hz
3.0 v
Discrete VCO (Kv = 2.2 MHz/V)
Lock Frequency = 129.63 MHz (fr = 58 kHz)
• Measurment circuit
S. G.
16.704 MHz
1000 pF
VCC = 3.0 V
fin
1000 pF OSC in
MB15C100
50 Ω
Loop Filter
R1
18 Ω 18 Ω
18 Ω
Spectrum
Analyzer
C1
C3
VCO
R2
C1 = 5600 pF
C2 = 0.015 µF
C3 = 680 pF
C2
R1 = 15 kΩ
R2 = 4.7 kΩ
19