SX1278 Ver la hoja de datos (PDF) - Semtech Corporation
Número de pieza
componentes Descripción
Fabricante
SX1278 Datasheet PDF : 132 Pages
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WIRELESS, SENSING & TIMING
SX1276/77/78/79
DATASHEET
IIP2
IIP3_HF
2nd order Input Intercept Point
Unwanted tones are 20 MHz
above the LO
3rd order Input Intercept point
Unwanted tones are 1MHz and
1.995 MHz above the LO
Highest LNA gain
Band 1
Highest LNA gain G1
LNA gain G2, 5dB sensitivity hit
-
+55
- dBm
-
-11
- dBm
-
-6
- dBm
IIP3_LF
BW_SSB
IMR
IMA
DR_RSSI
3rd order Input Intercept point
Unwanted tones are 1MHz and
1.995 MHz above the LO
Single Side channel filter BW
Image Rejection
Image Attenuation
RSSI Dynamic Range
Band 2
Highest LNA gain G1
LNA gain G2, 2.5dB sensitivity hit
-
-22
- dBm
-
-15
- dBm
Band 3
Highest LNA gain G1
LNA gain G2, 2.5dB sensitivity hit
-
-15
- dBm
-
-11
- dBm
Programmable
2.7
-
250 kHz
Wanted signal 3dB over sensitivity
BER=0.1%
-
50
- dB
-
57
- dB
AGC enabled
Min
-
-127
- dBm
Max
-
0
- dBm
*
RxBw = 83 kHz (Single Side Bandwidth)
**
RxBw = 50 kHz (Single Side Bandwidth)
*** RxBw = 250 kHz (Single Side Bandwidth)
2.5.4. FSK/OOK Mode Transmitter
Table 9 Transmitter Specification
Symbol
Description
Conditions
Min
Typ
Max Unit
RF_OP
RF output power in 50 ohms
on RFO pin (High efficiency PA).
Programmable with steps
Max
-
+14
-
dBm
Min
-
-1
-
dBm
ΔRF_
OP_V
RF output power stability on RFO
pin versus voltage supply.
VDD = 2.5 V to 3.3 V
-
3
-
dB
VDD = 1.8 V to 3.7 V
-
8
-
dB
RF_OPH
RF output power in 50 ohms, on
PA_BOOST pin (Regulated PA).
Programmable with 1dB steps Max
Min
-
-
+17
+2
-
dBm
-
dBm
RF_OPH_ Max RF output power, on
MAX
PA_BOOST pin
High power mode
-
+20
-
dBm
ΔRF_
OPH_V
RF output power stability on PA_-
BOOST pin versus voltage supply.
VDD = 2.4 V to 3.7 V
-
+/-1
-
dB
ΔRF_T
RF output power stability versus
temperature on PA_BOOST pin.
From T = -40 °C to +85 °C
-
+/-1
-
dB
Rev. 4 - March 2015
©2015 Semtech Corporation
Page 17
www.semtech.com
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