RF31
Table 2. Synthesizer AC Electrical Characteristics1
Parameter
Symbol
FSYNTH-LB
FSYNTH-HB
FRES-LB
FRES-HB
fREF
Conditions
Min
240
480
—
Typ
Max
480
960
—
Units
Synthesizer Frequency
Range
Low Band
High Band
Low Band
High Band
fcrystal /3
—
—
MHz
MHz
Hz
Synthesizer Frequency
Resolution2
156.25
312.5
10
—
—
Hz
Reference Frequency
—
—
MHz
V
When using reference frequency 0.7
instead of crystal. Measured
peak-to-peak (VPP)
—
1.6
Reference Frequency
Input Level2
fREF_LV
Synthesizer
Time2
Settling
Measured from leaving Ready mode
with XOSC running to any frequency
includ-ing VCO Calibration
Integrated over ±250 kHz bandwidth
(500 Hz lower bound of integration)
△F = 10 kHz
—
200
2
—
μs
tLOCK
Residual FM2
Phase Noise2
—
4
kHzRMS
△FRMS
Lφ (fM)
—
—
—
—
–80
–90
—
—
—
—
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
△F = 100 kHz
△F = 1 MHz
–115
–130
△F = 10 MHz
Notes:
1. All specification guaranteed by production test unless otherwise noted.
2. Guaranteed by qualification.
6
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