SX1231 SEMTECH [Semtech Corporation], SX1231 Datasheet - Page 14

• Manufacturer Part Number: SX1231
• Description: Low Power Integrated UHF Transceiver
• Manufacturer: SEMTECH [Semtech Corporation]

*
2.4.4. Transmitter
Table 7
Rev 2 - Nov 2009
ADVANCED COMMUNICATIONS & SENSING
IMR_OOK
TS_RE
TS_RE_AGC
TS_RE_AGC
&AFC
TS_FEI
TS_AFC
TS_RSSI
DR_RSSI
Symbol
RF_OP
RF_OPH
Δ
PHN
ACP
TS_TR
Set SensitivityBoost in RegTestLna to 0x2D to reduce the noise floor in the receiver
RF_OP
Transmitter Specification
Description
RF output power in 50 ohms
On RFIO pin
Max RF output power, on
PA_BOOST pin
RF output power stability
Transmitter Phase Noise
Transmitter adjacent channel
power (measured at 25 kHz off-
set)
Transmitter wake up time, to the
first rising edge of DCLK
Image rejection in OOK mode
Receiver wake-up time, from PLL
locked state to RxReady
Receiver wake-up time, from PLL
locked state, AGC enabled
Receiver wake-up time, from PLL
lock state, AGC and AFC enabled
FEI sampling time
AFC Response Time
RSSI Response Time
RSSI Dynamic Range
Conditions
Programmable with 1dB steps
With external match to 50 ohms
From VDD=1.8V to 3.6V
50 kHz Offset from carrier
BT=0.5 . Measurement conditions as
defined by EN 300 220-1 V2.1.1
Frequency Synthesizer enabled,
PaRamp = 8us, BR = 4.8 kb/s.
Wanted signal level = -106 dBm
RxBw
RxBw
RxBw
RxBw
RxBw
RxBw
Receiver is ready
Receiver is ready
Receiver is ready
AGC enabled
Page 14
= 10 kHz, BR = 4.8 kb/s
= 10 kHz, BR = 4.8 kb/s
= 200 kHz, BR = 100 kb/s
= 200 kHz, BR = 100 kb/s
= 200 kHz, BR = 100 kb/s
= 10 kHz, BR = 4.8 kb/s
868 / 915 MHz bands
434 / 315 MHz bands
Max
Min
Max
Min
Min
-
-
-
-
-
-
-
-
27
-
-
-
-
-
-
-
-
+/-0.3
Typ
+13
+17
120
-18
-95
-99
4.T
4.T
2.T
-
-115
163
265
1.7
3.0
4.8
30
96
0
bit
bit
bit
Max
-37
DATASHEET
www.semtech.com
SX1231
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
dBm
dBm
dBm
dB
dBc/
Hz
dBm
us
Unit
dB
ms
us
ms
us
ms
us
-
-
-
dBm
dBm