XE1283SKC915XE1 Semtech, XE1283SKC915XE1 Datasheet - Page 20

• Manufacturer Part Number: XE1283SKC915XE1
• Description: KIT STARTER FOR XE1283 915MHZ
• Manufacturer: Semtech
• Series: TrueRF™r
• Type: Transceiverr

Specifications of XE1283SKC915XE1

• Contents: Processor Boards, Modules, Batteries, Antennas, Serial Cable and Software CD
• For Use With/related Products: XE1283 (915MHz)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

5.1.1.3
The tank of the VCO will be implemented with one inductor in parallel with one capacitor. The recommended
characteristics of these components must be as follows (if possible the capacitor has to be avoided):
5.1.1.4
The loop filter of the frequency synthesizer is shown below.
The values recommended for applications using bit rates up to 38.4kbit/s are given in the table below.
The values recommended for applications using bit rates higher than 38.4 kbit/s are given in the table below.
© Semtech 2005
VCO Tank
Loop filter
Name
Name
Name
CV1
LV1
CL1
CL2
RL1
CL1
CL2
RL1
Typical Value
Typical Value
Typical Value
for 434MHz
for 434 MHz
for 434MHz
33 nH
220 pF
1.2 kΩ
1.2 nF
3.3 nF
1 pF
560 Ω
22 nF
Figure 11: XE1283 Loop filter
Typical Value
Typical Value
Typical Value
for 868 MHz
for 868 MHz
for 868 MHz
8.2 nH
330 pF
1.2 nF
4.7 nF
470 Ω
20
22 nF
NC
1 kΩ
Typical Value
XE1283
Typical Value
Typical Value
for 915 MHz
for 915 MHz
for 915 MHz
6.8 nH
330 pF
1.2 nF
4.7 nF
470 Ω
22 nF
NC
1 kΩ
Tolerance
Tolerance
Tolerance
± 5 %
± 2 %
± 5%
± 5%
± 5%
± 5%
± 5%
± 5%
XE1283
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