Data Sheet

LJ1269HC
Rev1.0 Page 11 Web: www.ljelect.com
2.3 ModuleSpecification
The tables below give the electrical specifications of the transceiver under the following conditions: Supply voltage VBAT1=
VBAT2=VDD=3.3 V, temperature = 25 °C, FRF = 915 MHz, Pout = +20dBm, 2-level FSK modulation without pre-filtering, FDA =
5 kHz, Bit Rate = 4.8 kb/s and terminated in a matched 50 Ohm impedance, unless otherwise specified.
Note Unless otherwise specified, the performances in the other frequency bands are similar or better.
2.3.1. Power Consumption
Table 4 Power Consumption Specification
Symbol
Description
Conditions
Min
Typ
Max
Unit
IDDSL
Supply current in Sleep mode
-
0.1
uA
IDDIDLE
Supply current in Idle mode
RC oscillator enabled
-
1.2
-
uA
IDDST
Supply current in Standby mode
Crystal oscillator enabled
-
1.25
1.5
mA
IDDFS
Supply current in Synthesizer
mode
-
9
-
mA
IDDR
Supply current in Receive mode
-
16
-
mA
IDDT
Supply current in Transmit mode
with appropriate matching, sta- ble
across VDD range
RFOP = +20 dBm, on PA_BOOST
RFOP = +17 dBm, on PA_BOOST
RFOP = +13 dBm, on RFIO pin
RFOP = +10 dBm, on RFIO pin
RFOP = 0 dBm, on RFIO pin
RFOP = -1 dBm, on RFIO pin
-
-
-
-
-
-
130
95
45
33
20
16
-
-
-
-
-
-
mA
mA
mA
mA
mA
mA
2.3.2. Frequency Synthesis
Table 5 Frequency Synthesizer Specification
Symbol
Description
Conditions
Min
Typ
Max
Unit
FR
Synthesizer Frequency
Range
315MHz Module
433MHz Module
868MHz Module
915MHz Module
290
424
862
890
340
510
890
1020
MHz
MHz
MHz
MHz
FXOSC
Crystal oscillator
frequency
For All Module
-
32
-
MHz
TS_OSC
Crystal oscillator
frequency
-
250
500
us
TS_FS
Frequency synthesizer
wake-up time to PllLock
signal
From Standby mode
-
80
150
us
TS_HOP
Frequency synthesizer
hop time at most 10
kHz away from the
targe
200 kHz step
1 MHz step
5 MHz step
7 MHz step
12 MHz step
20 MHz step
25 MHz step
-
-
-
-
-
-
-
20
20
50
50
80
80
80
-
-
-
-
-
-
-
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Sub GHz FSK/OOK Transceiver Module DATASHEET