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EVB71101
315/433MHz Receiver
Evaluation Board Description
2.1.2
Board Component Values for FSK
Part
C1
C3
C6
C7
C9
C10
C11
C12
C15
Size
0805
0603
0603
0603
0603
0603
0603
0805
0805
Value
@ 315 MHz
27 pF
1 nF
6.8 pF
2.7 pF
33 nF
1 nF
1 nF
10 pF
100 pF
Value
@ 433.92 MHz
27 pF
1 nF
4.7 pF
2.2 pF
33 nF
1 nF
1 nF
10 pF
100 pF
Tolerance
± 5%
± 10%
± 5%
± 5%
± 10%
± 10%
± 10%
± 5%
± 5%
Description
crystal series capacitor
loop filter capacitor
LNA output tank capacitor
MIX1 input matching capacitor
IFA feedback capacitor
IFA feedback capacitor
IFA feedback capacitor
DEMOD phase-shift capacitor
demodulator output low-pass capacitor,
this value for data rates < 20 kbps NRZ,
for higher data rates decrease the value
C16
C17
0805
0805
1.5 nF
10 nF
1.5 nF
10 nF
± 10%
± 10%
RSSI output low-pass capacitor
data slicer capacitor,
this value for data rates > 0.8 kbps NRZ,
for lower data rates increase the value
CB1 to CB5
CB7 to CB8
CB6
C_RO
R1
R2
R4
R5
RL1
RL2
L1
L2
L3
XTAL
SAWFIL
0603
0805
0603
0603
0603
0805
0805
0805
0805
0603
0603
0603
SMD
6x3.5
HC49
SMD
SMD
3x3
330 pF
33 nF
330 pF
10 k Ω
330 Ω
330 k Ω
220 k Ω
470 Ω
470 Ω
0 Ω
33 nH
22 nH
20.35625 MHz
@ RF = 315 MHz
SAFDC315MSM0T00
(f 0 = 315.00 MHz)
330 pF
33 nF
330 pF
10 k Ω
330 Ω
330 k Ω
220 k Ω
470 Ω
470 Ω
68 nH
82 nH
15 nH
26.45125 MHz
@ RF = 433.92 MHz
SAFCC433MBL0X00
(f 0 = 433.92 MHz)
± 10%
± 10%
± 5%
± 5%
± 5%
± 5%
± 5%
± 5%
± 5%
± 5%
± 5%
± 5%
± 25ppm cal.
± 30ppm temp.
B 3dB = 840 kHz
B 3dB = 5MHz
de-coupling capacitor
de-coupling capacitor
optional capacitor,
to couple external RO signal
loop filter resistor
optional CERFIL output matching resistor
data slicer resistor
loading 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-Elek-
tronik (WE-KI series), or equivalent part
fundamental-mode crystal from
Telcona/Horizon (HEX22 series)
or equivalent part
fundamental-mode crystal, C load = 10 pF
to 15 pF, C 0, max = 7 pF, R 1, max = 50 Ω l
low-loss SAW filter from Murata,
or equivalent part
CERFIL
CERDIS
SMD
3.45x3.1
SMD
4.5x2
SFECF10M7HA00
CDSCB10M7GA135
B 3dB = 180 kHz
ceramic filter from Murata,
or equivalent part
ceramic discriminator from Murata,
or equivalent part
39012 71101 01
Rev. 012
Page 7 of 14
EVB Description
April/08
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