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XE1205
4
ELECTRICAL CHARACTERISTICS
4.1
ABSOLUTE MAXIMUM OPERATING RANGES
Stresses above the values listed below may cause permanent device failure. Exposure to absolute maximum ratings for
extended periods may affect device reliability.
Symbol
VDDmax
Tmr
ML
Description
Supply voltage
Storage temperature
Receiver input level
Min.
-0.5
-55
Max.
3.9
125
5
Unit
V
°C
dBm
Table 2: Absolute Maximum Operation Ranges
The device is ESD sensitive and should be handled with precaution.
4.2
4.2.1
SPECIFICATIONS
Operating Range
Symbol
VDDop
Trop
Clop
Description
Supply voltage
Temperature
Load capacitance on digital ports
Min.
2.4
-40
-
Max.
3.6
85
25
Unit
V
°C
pF
Table 3: Operating Range
4.2.2
Electrical Specifications
The table below gives the electrical specifications of the transceiver under the following conditions:
Supply Voltage = 3.3V, temperature = 25 °C, 2-level FSK without pre-filtering, fc = 915 MHz, Δ f = 5 kHz,
Bit rate = 4.8 kbit/s, BW SSB = 10 kHz, BER = 0.1% (at the output of the bit synchronizer), matched impedances,
environment as defined in section 8, unless otherwise specified.
Symbol
IDDSL
IDDST
IDDR
IDDT
RFS
RFS_12
FDA
Description
Supply current in sleep mode
Supply current in standby mode
Supply current in receiver mode
Supply current in transmitter mode
RF sensitivity
RF sensitivity at 1.2 kbit/s
Frequency deviation
Conditions
Quartz oscillator (39 MHz)
enabled
RFOP = 5 dBm
RFOP = 15 dBm
Mode A
Mode B
Mode A
Mode B
Programmable
Min
-
-
-
-
-
-
-
-
-
1
Typ
0.2
0.85
14
33
62
-116
-102
-121
-107
-
Max
1
1.10
16.5
40
75
-113
-99
-118
-104
255
Unit
uA
mA
mA
mA
mA
dBm
dBm
dBm
dBm
kHz
CCR
IIP3
Co-channel rejection
Input intercept point (from LNA input funw = f LO + 1 MHz and
to base-band filter output) f LO + 1.995 MHz
Mode A
Mode B
-13
-37
-21
-10
-33
-18
-
-
-
dBc
dBm
dBm
BW
Base band filter bandwidth (SSB)
Programmable (1)
-
10
-
kHz
-
-
-
20
40
200
-
-
-
kHz
kHz
kHz
? Semtech 2008
5
www.semtech.com
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