XE1205SKC433XE1 Semtech, XE1205SKC433XE1 Datasheet - Page 44
![KIT STARTER FOR XE1205 433MHZ](/photos/14/10/141097/xe1205skc433xe1_sml.jpg)
XE1205SKC433XE1
Manufacturer Part Number
XE1205SKC433XE1
Description
KIT STARTER FOR XE1205 433MHZ
Manufacturer
Semtech
Series
TrueRF™r
Type
Transceiver, ISMr
Specifications of XE1205SKC433XE1
Frequency
433MHz
For Use With/related Products
XE1205 (433MHz)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
The schematic of the recommended matching network at the output of the transmitter is given in Figure 28 below. The
two Π-sections are used to provide harmonic filtering to satisfy FCC and ETSI regulations.
The typical component values of the matching circuit are shown in Table 31 below.
The VCO tank circuit should implemented with an inductor and capacitor in parallel. Typical component values are
shown in Table 32.
© Semtech 2008
8.3
VCO TANK
Name
CT1
CT2
CT3
CT4
CT5
LT1
LT2
LT3
Name
CV1
LV1
OUTPUT
Typical Value
Figure 28 Matching network at the output of the transmitter.
for 434 MHz
434 MHz
1.0 pF
6.8 pF
1.0 pF
6.8 pF
4.7 pF
Table 31: Matching circuit component values
33 nH
33 nH
22 nH
22 nH
22 pF
Table 32: VCO tank component values
LT3
Typical Value
for 869 MHz
869 MHz
6.8 nH
0.56 pF
8.2 nH
1.5 pF
3.3 pF
2.2 pF
39 nH
10 nH
NC
15 pF
CT3
44
LT2
Typical Value
CT2
for 915 MHz
915 MHz
5.6 nH
NC
8.2 nH
1.8 pF
3.3 pF
2.2 pF
47 nH
10 nH
33 pF
NC
VDD
Tolerance
Tolerance
± 5 %
± 2 %
± 5%
± 5%
± 5%
± 5%
± 5%
± 5%
± 5%
± 5%
RFOUT
XE1205
XE1205
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