RFM22 Datasheet, PDF (5/150 Pages) –

RFM22
Table 2. Synthesizer AC Electrical Characteristics¹
Parameter
Symbol
Conditions
Min
Synthesizer Frequency FSYNTH-LB
Low Band
240
Range
FSYNTH-HB
High Band
480
Synthesizer Frequency FRES-LB
Low Band
—
Resolution²
FRES-HB
High Band
—
Reference Frequency
fREF
fcrystal /3
—
Reference Frequency
Input Level²
fREF_LV
When using reference frequency
instead of crystal. Measured
0.7
peak-to-peak (VPP)
Synthesizer Settling
Time²
tLOCK
Measured from leaving Ready mode
with XOSC running to any frequency —
includ-ing VCO Calibration
Residual FM²
△FRMS
Integrated over ±250 kHz bandwidth
—
(500 Hz lower bound of integration)
Lφ (fM)
△F = 10 kHz
—
Phase Noise²
△F = 100 kHz
—
△F = 1 MHz
—
△F = 10 MHz
—
Notes:
1. All specification guaranteed by production test unless otherwise noted.
2. Guaranteed by qualification.
Typ
—
—
156.25
312.5
10
—
200
2
–80
–90
–115
–130
Max
480
930
—
—
—
1.6
—
4
—
—
—
—
Units
MHz
MHz
Hz
Hz
MHz
V
μs
kHzRMS
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
5
Tel: [phone] Fax: [phone] E-mail: [e-mail] http://www.hoperf.com