© Semtech 2006 www.semtech.com
6
XE1202A TrueRF™
3 Electrical Characteristics
3.1 Absolute Maximum Operating Ranges
Stresses above those values listed below may cause permanent device failure. Exposure to absolute maximum
ratings for extended periods may affect device reliability.
Symbol Description Min. Max. Unit
VDDmax Supply voltage -0.4 3.9 V
ML Receiver input level -5 dBm
Tmax Storage temperature -55 125 °C
Table 2: Absolute Maximum Operating Ranges
The device is ESD sensitive and should be handled with precaution.
3.2 Specifications
3.2.1 Operating Range
Symbol Description Min. Max. Unit
VDD Supply voltage 2.4 (*) 3.6 V
T Temperature -40 85 °C
CLop Load capacitance on digital ports - 25 pF
Table 3: Operating Range
(*) For narrow-band configurations (base-band filter bandwidths of 10, 20 and 40 kHz), the minimum operating
supply voltage is 2.4 V. For 200 kHz base-band filter bandwidth setting the minimum operating supply voltage is 2.7
V.
3.2.2 Electrical 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, f
C
= 434, 869 and 915 MHz,
∆f = 5 kHz, Bit rate = 4.8 kbits/s, BW
SSB
= 10 kHz, BER = 1 % (measured at the output of the bit synchronizer), LNA
input and PA output matched to 50 Ω, environment as defined in section 6, unless otherwise specified.
Symbol Description Conditions Min Typ Max Unit
IDDSL Supply current in sleep mode - 0.2 1 µA
IDDST Supply current in standby
mode
Crystal oscillator (39 MHz)
enabled
- 0.85 1.10 mA
IDDR Supply current in receive
mode
- 14 16.5 mA
IDDT Supply current in transmitter
mode
RFOP = 5 dBm
RFOP = 15 dBm
-
-
33
62
40
75
mA
mA
RF sensitivity 869 / 915 MHz A-mode
B-mode
- -116
-103
-113
-100
dBm
dBm
RFS
RF sensitivity 434 MHz A-mode
B-mode
- -114
-100
-111
-98
dBm
dBm
FDA Frequency deviation
Programmable
-
-
-
-
-
5
10
20
40
100
-
-
-
-
-
kHz
kHz
kHz
kHz
kHz
CCR Co-channel rejection -13 -10 - dBc
