EM357-RTR Datasheet, PDF (21/241 Pages) Silicon Laboratories – High-Performance, Integrated ZigBee/802.15.4 System-on-Chip

2.7.3. Synthesizer
Table 2.10 lists the key parameters of the integrated synthesizer on the EM35x.
Table 2.10. Synthesizer Characteristics
Measured on Silicon Labs’ EM357 reference design with T_A = 25 °C and V_DD = 3 V, unless otherwise noted.
Parameter
Frequency range
Frequency resolution
Lock time
Relock time
Phase noise at 100 kHz offset
Phase noise at 1 MHz offset
Phase noise at 4 MHz offset
Phase noise at 10 MHz offset
Test Condition
From off
Channel change or RX/TX turnaround
(IEEE 802.15.4-2003 defines 192 μs
turnaround time)
Min Typ Max
2400 — 2500
— 11.7 —
—
— 100
—
— 100
Unit
MHz
kHz
μs
μs
— –75 — dBc/Hz
— –100 — dBc/Hz
— –108 — dBc/Hz
— –114 — dBc/Hz
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Rev 1.3