XE1283
3
3.1
ELECTRICAL CHARACTERISTICS
GLOBAL
3.1.1 Absolute maximum ratings
Stresses above those values listed below may cause permanent device failure. Exposure to absolute maximum ratings
for extended periods may affect device reliability.
Symbol
Tmr1
Tmr2
Description
Storage temperature (unprogrammed microcontroller)
Storage temperature (programmed microcontroller)
Min.
-55
-40
Max.
125
85
Unit
°C
°C
The device is ESD sensitive and should be handled with precaution.
3.1.2
Operating range
Symbol
Top
Description
Operating temperature
Min.
-40
Max.
85
Unit
°C
3.2
RF
3.2.1 Absolute maximum ratings
Stresses above those values listed below may cause permanent device failure. Exposure to absolute maximum ratings
for extended periods may affect device reliability.
Symbol
VDDmr
Description
Supply voltage
Min.
-0.5
Max.
3.9
Unit
V
3.2.2
Operating range
Symbol
VDDop
Clop
Description
Supply voltage
Load capacitance on digital ports
Min.
2.4
-
Max.
3.6
25
Unit
V
pF
3.2.3
Specifications
The table below gives the electrical specifications
of the transceiver under the following conditions:
Supply Voltage = 3.3 V, temperature = 25 °C, 2-level FSK without pre-filtering, fc = 915 MHz, ? f = 55 kHz, Bit rate = 4.8
kb/s, BW DSB = 200 kHz, BER = 0.1 % (measured at the output of the bit synchronizer), LNA input and PA output matched
to 50 ? , environment as defined in section 5, unless otherwise specified.
? Semtech 2005
7
www.semtech.com
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