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TH71111
868/915MHz
FSK/ASK Receiver
4.3.2
ASK Component List
Part
C1
C3
C4
C5
C7
C9
C10
C11
C16
Size
0805
0603
0603
0603
0603
0603
0603
0603
0805
Value
@ 868.3 MHz
22 pF
1 nF
4.7 pF
2.7 pF
1.0 pF
33 nF
1 nF
1 nF
1.5 nF
Tolerance
± 5%
± 10%
± 5%
± 5%
± 5%
± 10%
± 10%
± 10%
± 10%
Description
crystal series capacitor
loop filter capacitor
capacitor to match SAW filter input
capacitor to match SAW filter output
MIX1 input matching capacitor
IFA feedback capacitor
IFA feedback capacitor
IFA feedback capacitor
RSSI output low-pass capacitor,
this value for data rates < 10 kbps NRZ,
for higher data rates decrease the value
C17
0805
10 nF
± 10%
data slicer capacitor,
this value for data rates > 0.8 kbps NRZ,
for lower data rates increase the value
R1
R2
R4
RL1
RL2
L1
L2
L3
0603
0603
0805
0805
0805
0603
0603
0603
10 k ?
330 ?
330 k ?
470 ?
470 ?
22 nH
22 nH
10 nH
± 5%
± 5%
± 5%
± 5%
± 5%
± 5%
± 5%
± 5%
loop filter resistor
optional CERFIL output matching resistor
data slicer resistor
MIX1 bias resistor
MIX1 bias resistor
SAW filter matching inductor from Würth-Elektronik
(WE-KI series), or equivalent part
LNA output tank inductor from Würth-Elektronik (WE-KI series),
or equivalent part
XTAL
SAWFIL
SMD
6x3.5
SMD
26.80000 MHz
@ RF = 868.3 MHz
SAFCC868MSL0X00
± 25ppm cal.
± 30ppm temp.
B 3dB = 2 MHz
fundamental-mode crystal from
Telcona/Horizon or equivalent par
low-loss SAW filter from Murata, or equivalent part
3x3
(f 0 =868.3 MHz)
SMD
SFECF10M7HA00
B 3dB = 180 kHz
ceramic filter from Murata, or equivalent part
CERFIL
3.45x3.1
Leaded
SFVLA10M7LF00
B 3dB = 80 kHz
optional, ceramic filter from Murata, or equivalent part
type
? For component values for other frequencies, please refer to the EVB descriptions
39010 71111
Rev. 015
Page 17 of 20
Data Sheet
Jun/12
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