EVB71111
868/915MHz Receiver
Evaluation Board Description
2
Application Circuits
2.1 FSK Application Circuit
2.1.1
Circuit Diagram for FSK Reception
FSK output
1 2
1 2
1 2
C16
C15
R5
C17
R4
CB3
VCC
XTAL
C1
CERDIS
GND
RO
16
15
25
VEE
C_RO
VCC
C12
OUT_IFA
26 RO
VCC
C11
C10
VCC
ENRX
GND
VCC 14
27 VCC
CB4
C9
R2
CB2
R1
ENRX
LF
FBC2 13
28
29
30
31
32
TH71111
C3
12
11
10
9
FBC1
IN_IFA
VEE
VEE
IN_LNA
6
1
IN_LNA
VCC
SAWFIL
L1
C4
L2
C5
3
4
OUT_MIX2
CERFIL
1
2
3
4
5
6
7
8
CB1
C7
CB5
CB6
GND
VCC
L3
CB8
CB7
VCC
Circuit Features
•
•
Tolerates input frequency variations
Well-suited for NRZ, Manchester and similar codes
39012 71111 01
Rev. 011
Page 6 of 14
EVB Description
June/07
MELEXIS [ Melexis Microelectronic Systems ]
