EVB71102
315/433MHz Receiver
Evaluation Board Description
2.1.2
Part
C1
C3
C6
C7
C8
C9
C10
C11
C12
C15
C16
C17
CB1 to CB5
CB7 to CB8
CB6
C_RO
R1
R2
R4
R5
L1
L2
L3
L4
L5
Board Component Values for FSK
Size
0805
0603
0603
0603
0603
0603
0603
0603
0805
0805
0805
0805
0603
0805
0603
0805
0603
0805
0805
0603
0603
0603
0603
0603
SMD
6x3.5
HC49
SMD
Value
@ 315 MHz
27 pF
1 nF
6.8 pF
2.7 pF
27 pF
33 nF
1 nF
1 nF
10 pF
100 pF
1.5 nF
10 nF
330 pF
33 nF
330 pF
10 kΩ
330
Ω
330 kΩ
220 kΩ
0
Ω
33 nH
22 nH
100 nH
100 nH
Value
@ 433.92 MHz
27 pF
1 nF
4.7 pF
2.2 pF
27 pF
33 nF
1 nF
1 nF
10 pF
100 pF
1.5 nF
10 nF
330 pF
33 nF
330 pF
10 kΩ
330
Ω
330 kΩ
220 kΩ
68 nH
82 nH
15 nH
100 nH
100 nH
Tolerance
±5%
±10%
±5%
±5%
±5%
±10%
±10%
±10%
±5%
±5%
±10%
±10%
±10%
±10%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±25ppm
cal.
±30ppm
temp.
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
DEMOD phase-shift capacitor
demodulator output low-pass capacitor,
this value for data rates < 20 kbps NRZ,
for higher data rates decrease the value
RSSI output low-pass capacitor
data slicer capacitor,
this value for data rates > 0.8 kbps NRZ,
for lower data rates increase the value
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
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
Ωl
low-loss SAW filter from Murata
or equivalent part
XTAL
23.26429 MHz @
RF = 315 MHz
23.51222 MHz @
RF = 433.92 MHz
SAWFIL
SMD
3x3
SMD
3.45x3.1
SMD
4.5x2
SAFCC433MBL0X00
(f
0
= 433.92 MHz)
SAFDC315MSM0T00
(f
0
= 315.00 MHz)
SFECF10M7HA00
CDSCB10M7GA135
B
3dB
= 840 kHz
B
3dB
= 5MHz
B
3dB
= 180 kHz
CERFIL
CERDIS
ceramic filter from Murata,
or equivalent part
ceramic discriminator from Murata,
or equivalent part
39012 71102 01
Rev. 011
Page 7 of 14
EVB Description
June/07
MELEXIS [ Melexis Microelectronic Systems ]
