SX1239IMLTRT Semtech, SX1239IMLTRT Datasheet - Page 21

• Manufacturer Part Number: SX1239IMLTRT
• Description: IC, RF RECEIVER, 1.02GHz, QFN-24
• Manufacturer: Semtech

Specifications of SX1239IMLTRT

• Applications: Wireless Sensor Networks, Automated Meter Reading, Home And Building Automation
• Receiving Current: 16mA
• Data Rate: 300Kbps
• Modulation Type: FSK, OOK
• Sensitivity Dbm: -120dBm
• Rohs Compliant: Yes
• Rf Ic Case Style: QFN
• No. Of Pins: 24
• Sensitivity (dbm): -120dBm
• Supply Voltage Range: 1.8V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Lead Free Status / Rohs Status: Supplier Unconfirmed

The following channel filter bandwidths are accessible (oscillator is mandated at 32 MHz):
Table 10 Available RxBw Settings
3.4.7. DC Cancellation
DC cancellation is required in zero-IF architecture receivers to remove any DC offset generated through self-reception. It is
built-in the SX1239 and its adjustable cutoff frequency fc is controlled in RegRxBw:
Rev 3 - Jan 2011
ADVANCED COMMUNICATIONS & SENSING
When FSK modulation is enabled:
When OOK modulation is enabled:
(binary/value)
RxBwMant
10b / 24
01b / 20
00b / 16
10b / 24
01b / 20
00b / 16
10b / 24
01b / 20
00b / 16
10b / 24
01b / 20
00b / 16
10b / 24
01b / 20
00b / 16
10b / 24
01b / 20
00b / 16
10b / 24
01b / 20
00b / 16
10b / 24
01b / 20
00b / 16
RxBwExp
(decimal)
RxBw
RxBw
7
7
7
6
6
6
5
5
5
4
4
4
3
3
3
2
2
2
1
1
1
0
0
0
=
=
----------------------------------------------------------------- -
RxBwMant
----------------------------------------------------------------- -
RxBwMant
ModulationType=00
Page 21
FXOSC
FXOSC
100.0
125.0
166.7
200.0
250.0
333.3
400.0
500.0
FSK
10.4
12.5
15.6
20.8
25.0
31.3
41.7
50.0
62.5
83.3
2.6
3.1
3.9
5.2
6.3
7.8
×
×
2
2
RxBwExp
RxBwExp
RxBw (kHz)
+
+
2
3
ModulationType=01
100.0
125.0
166.7
200.0
250.0
OOK
10.4
12.5
15.6
20.8
25.0
31.3
41.7
50.0
62.5
83.3
1.3
1.6
2.0
2.6
3.1
3.9
5.2
6.3
7.8
DATASHEET
www.semtech.com
SX1239