Silicon Laboratories Si4430, Manual

Page: 8 / 152

S i 4 4 3 0
8 Preliminary Rev. 0.4
Table 2. Synthesizer AC Electrical Characteristics
1
Parameter Symbol Conditions Min Typ Max Units
Synthesizer Frequency
Range F
SYNTH
900 — 960 MHz
Synthesizer Frequency
Resolution
2
F
RES
— 312.5 — Hz
Reference Frequency f
REF
f
crystal
/ 3 — 10 — MHz
Reference Frequency
Input Level
2
f
REF_LV
When using reference frequency instead
of crystal. Measured peak-to-peak (V
PP
)
0.7 — 1.6 V
Synthesizer Settling Time
2
t
LOCK
Measured from leaving Ready mode with
XOSC running to any frequency includ-
ing VCO Calibration
— 200 — µs
Residual FM
2

F
RMS
Integrated over

250 kHz bandwidth
(500 Hz lower bound of integration)
— 2 4 kHz
RMS
Phase Noise
2
L

(f
M
)

F = 10 kHz — –80 — dBc/Hz

F = 100 kHz — –90 — dBc/Hz

F = 1 MHz — –115 — dBc/Hz

F = 10 MHz — –130 — dBc/Hz
Notes:
1.
All specification guaranteed by production test unless otherwise noted.
2.
Guaranteed by qualification.