MRF89XAM8A-I Datasheet, PDF (127/140 Pages) Microchip Technology – Ultra Low-Power, Integrated ISM Band Sub-GHz Transceiver

5.4.13 DIGITAL MODULATION SCHEMES
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:
DTS 6 dB BANDWIDTH
MRF89XA
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.
FIGURE 5-31:
DTS POWER SPECTRAL DENSITY
Conditions:
• POUT = +10.6dBm
• f_dev = +/-200kHz
• BR =100 kbps (Chip rate=100 kCps, as data whitening is enabled)
• Packet mode, data whitening enabled
5.4.14 CURRENT STABILITY OVER
TEMPERATURE AND VOLTAGE
Figure 5-32 provides graphs for IDD vs. Temperature
and VDD.
© 2010–2011 Microchip Technology Inc.
Preliminary
DS70622C-page 127