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MRF49XAT-I-ST Datasheet, PDF (81/102 Pages) Microchip Technology – ISM Band Sub-GHz RF Transceiver | |||
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MRF49XA
TABLE 5-4: RECEIVER AC CHARACTERISTICS(1)
Parameters
Condition
Min
Typ
Max
Unit
Receiver Sensitivity 433 MHz band(2)
â
868 MHz band(2)
â
915 MHz band(2)
â
Maximum RF Input LNA: High Gain
0
Power
RF Input Capacitance
â
â
Receiver Spurious
â
â
Emission
Receiver BW
mode 0
â
Mode 1
â
Mode 2
â
Mode 3
â
Mode 4
â
Mode 5
â
RSSI Range
â
â
RSSI Error
â
â
RSSI Power Supply When input signal level is lower than
â
Dependency
-54 dBm and greater than -100 dBm
Filter Capacitor for
â
1
Analog RSSI
RSSI Programmable
â
â
Level Steps
Digital RSSI
Until the RSSI signal goes high after
â
Response Time
the input signal exceeds the
preprogrammed limit, CARRSI = 4.7
nF
Input IP3
In band interferers in high bands (868
â
MHz, 915 MHz)
IIP3
In band interferers in low band (433
â
(LNA â 6 dB gain) MHz)
IIP3
Out of band interferers,
â
(LNA â 6 dB gain) l f-fO l > 4 MHz
FSK Bit Rate
With internal digital filters supported
0.6
by design
FSK Bit Rate
With internal analog filters supported
â
by design
AFC Locking Range Îffsk: FSK deviation in the received
â
signal
-112
â
-110
â
-109
â
â
â
1
â
â
-60
67
â
134
â
200
â
270
â
340
â
400
â
46
â
±6
â
+35
â
â
â
6
â
500
â
-21
-15
-12
â
â
0.8 â Îffsk
â
â
â
115.2
256
â
dBm
dBm
dBm
dBm
pF
dBm
kHz
kHz
kHz
kHz
kHz
kHz
dB
dB
mV/V
nF
dB
μs
dBm
dBm
dBm
kbps
kbps
â
Note 1: Typical Values: TA = 25°C, VDD = 3.3V.
2: BER = 10E â 3, BW = 67 kHz, Îf = 30 kHz, Baud Rate = 1.2 kbps, digital filter with AFC disabled.
© 2009-2011 Microchip Technology Inc.
Preliminary
DS70590C-page 81
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