mrf89xa Microchip Technology Inc., mrf89xa Datasheet - Page 131

• Manufacturer Part Number: mrf89xa
• Description: Ultra-low Power, Integrated Ism Band Sub-ghz Transceiver
• Manufacturer: Microchip Technology Inc.

5.4.13
FCC Part 15.247 allows for systems employing digital
modulation techniques to transmit up to 1 W, provided
that the 6 dB bandwidth of the signal is at least 500 kHz
and that the power spectral density does not exceed
8 dBm in any 3 kHz bandwidth.
FIGURE 5-30:
FIGURE 5-31:
5.4.14
Figure 5-32 provides graphs for I
and V
© 2010 Microchip Technology Inc.
Conditions:
• P
• f
• BR =100 kbps (Chip rate=100 kCps, as data whitening is enabled)
• Packet mode, data whitening enabled
dev
DD
OUT
= +/-200kHz
.
= +10.6dBm
DIGITAL MODULATION SCHEMES
CURRENT STABILITY OVER
TEMPERATURE AND VOLTAGE
DTS 6 dB BANDWIDTH
DTS POWER SPECTRAL DENSITY
DD
vs. Temperature
Preliminary
The MRF89XA can meet these constraints while
transmitting at the maximum output power of the
device, typically 10 dBm. The built-in whitening
process details are described in Section 3.11.4.2
“Data Whitening”.
MRF89XA
DS70622B-page 131