SX1240ISTRT Semtech, SX1240ISTRT Datasheet - Page 14

• Manufacturer Part Number: SX1240ISTRT
• Description: IC, RF/IF TRANSMITTER, 868.3MHz, SOIC-8
• Manufacturer: Semtech

Specifications of SX1240ISTRT

• Transmitting Current: 16.5mA
• Data Rate: 100Kbps
• Modulation Type: FSK, OOK
• Rf Ic Case Style: SOIC
• No. Of Pins: 8
• Supply Voltage Range: 1.8V To 3.7V
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes

5. Application Information
5.1. Crystal Specification
The SX1240 is designed to operate with a low-cost 26 MHz crystal.
Table 9
5.2. Reference Design Schematics
SX1240, Rev 1, Oct 2010
©2010 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
MHDR1X10
P1
10
9
8
7
6
5
4
3
2
1
Symbol
FXOSC
LM
CM
RS
C0
CL
SX1240 Quartz Crystal Reference Oscillator Specification
GND
Data
R_VBAT
R6
Figure 9. Application Module Schematics (See BoM for Optional Components)
Description
Crystal Frequency
Crystal Motional Inductance
Crystal Motional Capacitance
Crystal Serial Resistance
Crystal Shunt Capacitance
Load Capacitance
VBAT
Ctrl
GND
GND
XTAL
26 MHz
xtal
26 MHz
1
1
2
GND
GND
GND
Q2
Q1
4
VCC
1
2
3
4
2
3
U1
GND
DATA
GND
XTAL
R1
SX1240
GND
RFOUT
C6
VBAT
Conditions
GND
SCK
GND
GND
C5
8
7
6
5
VCC
Page 14
L1
R2
NC
GND
R4
0R0
R3
NC
GND
C7
VCC
C1
L2
Min
26
-
-
-
-
-
C3
12.655
2.962
Typ
GND
1.0
26
20
15
Integrated Transmitter IC
C8
C2
L3
GND
C4
Max
100
7.0
26
-
-
-
www.semtech.com
RFIO1
GND
DATASHEET
SX1240
MHz
mH
fF
Ohms
pF
pF
Unit
LM
Antenna1
GND
C11