Single-Chip Low Power RF Transceiver for Narrowband Systems ...
Single-Chip Low Power RF Transceiver for Narrowband Systems ...
Single-Chip Low Power RF Transceiver for Narrowband Systems ...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
4.3. RSSI / Carrier Sense Section<br />
Parameter<br />
RSSI dynamic range<br />
RSSI accuracy ± 3<br />
CC1021<br />
Min Typ Max Unit Condition / Note<br />
RSSI linearity ± 1 dB<br />
RSSI attach time<br />
51.2 kHz channel filter BW<br />
102.4 kHz channel filter BW<br />
307.2 kHz channel filter BW<br />
Carrier sense programmable range<br />
Carrier sense at ±100 kHz and ±200<br />
kHz offset<br />
102.4 kHz channel filter BW, 433 MHz<br />
±100 kHz<br />
±200 kHz<br />
102.4 kHz channel filter BW, 868 MHz<br />
±100 kHz<br />
±200 kHz<br />
4.4. IF Section<br />
Parameter<br />
Intermediate frequency (IF)<br />
Digital channel filter bandwidth<br />
AFC resolution<br />
55 dB See section 12.5 on page 33 <strong>for</strong><br />
details.<br />
730<br />
380<br />
140<br />
dB<br />
µs<br />
µs<br />
µs<br />
See section 12.5 on page 33 <strong>for</strong><br />
details.<br />
Shorter RSSI attach times can be<br />
traded <strong>for</strong> lower RSSI accuracy.<br />
See section 12.5 on page 33 <strong>for</strong><br />
details.<br />
Shorter RSSI attach times can<br />
also be traded <strong>for</strong> reduced<br />
sensitivity and selectivity by<br />
increasing the receiver channel<br />
filter bandwidth.<br />
40 dB Accuracy is as <strong>for</strong> RSSI<br />
-57<br />
-44<br />
-60<br />
-44<br />
dBm<br />
dBm<br />
dBm<br />
dBm<br />
Table 5. RSSI / Carrier sense parameters<br />
At carrier sense level −98 dBm,<br />
CW jammer at ±100 kHz and<br />
±200 kHz offset.<br />
Carrier sense is measured by<br />
applying a signal at ±100 kHz and<br />
±200 kHz offset and observe at<br />
which level carrier sense is<br />
indicated.<br />
Min Typ Max Unit Condition / Note<br />
307.2 kHz See section 12.1 on page 30 <strong>for</strong><br />
details.<br />
38.4<br />
to<br />
307.2<br />
kHz<br />
1200 Hz<br />
Table 6. IF section parameters<br />
The channel filter 6 dB bandwidth<br />
is programmable from 9.6 kHz to<br />
307.2 kHz. See section 12.2 on<br />
page 30 <strong>for</strong> details.<br />
At 19.2 kBaud<br />
Given as Baud rate/16. See<br />
section 12.13 on page 42 <strong>for</strong><br />
details.<br />
SWRS045B Page 11 of 89
Change language