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MRF89XA
5.4.13
DIGITAL MODULATION SCHEMES
The MRF89XA can meet these constraints while
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.
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 5-30:
FIGURE 5-31:
Conditions:
DTS 6 dB BANDWIDTH
DTS POWER SPECTRAL DENSITY
?
?
?
?
P OUT = +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 I DD vs. Temperature
and V DD .
? 2010–2011 Microchip Technology Inc.
Preliminary
DS70622C-page 127
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