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EVB71102
315/433MHz Receiver
Evaluation Board Description
2.2.2
Board Component Values for ASK
Part
C1
C3
C6
C7
C8
C9
C10
C11
C16
Size
0805
0603
0603
0603
0603
0603
0603
0603
0805
Value
@ 315 MHz
27 pF
1 nF
6.8 pF
2.7 pF
27 pF
33 nF
1 nF
1 nF
1.5 nF
Value
@ 433.92 MHz
27 pF
1 nF
4.7 pF
2.2 pF
27 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
LNA output tank capacitor
MIX1 input matching capacitor
IF1 tank 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 nF
± 10%
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
L1
L2
L3
L4
L5
XTAL
SAWFIL
0603
0805
0603
0603
0603
0805
0603
0603
0603
0805
0805
SMD
6x3.5
HC49
SMD
SMD
3x3
330 pF
33 nF
330 pF
10 k Ω
330 Ω
330 k Ω
0 Ω
33 nH
22 nH
100 nH
100 nH
23.26429 MHz @
RF = 315 MHz
SAFDC315MSM0T00
(f 0 = 315.00 MHz)
330 pF
33 nF
330 pF
10 k Ω
330 Ω
330 k Ω
68 nH
82 nH
15 nH
100 nH
100 nH
23.51222 MHz @
RF = 433.92 MHz
SAFCC433MBL0X00
(f 0 = 433.92 MHz)
± 10%
± 10%
± 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
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
IF1 tank inductor from Würth-Elektronik
(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 15pF, C 0, max = 7 pF, R 1, max = 50 Ω l
low-loss SAW filters from Murata
or equivalent part
CERFIL
SMD
3.45x3.1
SFECF10M7HA00
B 3dB = 180 kHz
ceramic filter from Murata,
or equivalent part
39012 71102 01
Rev. 012
Page 10 of 14
EVB Description
April/08
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