EVB7122
27 to 930MHz Transceiver
Evaluation Board Description
4
4.1
Application Circuits
FSK Application Circuit Programmable User Mode (internal AFC option)
2 1
4 3 2 1
RS2
RS3
RE/SCLK
ASK/FSK
4 3 2 1
CB0
RS1
TE/SDTA
FS0/SDEN
FS1/LD
12 3
12 3
12 3
12 3
12 3
CX2
CB7
16
RE/SCLK
15
VCC_DIG
14
ASK/FSK
13
IN_DTA
12
FSK_SW
11
RO
10
FS0/SDEN
17
OUT_DTA
8
RSSI
7
OUT_DEM
6
VEE_RO
9
RSSI
GND
OUT_DEM
GND
4 3 2 1
CX1
XTAL
VCC
GND
IN_DTA
GND
OUT_DTA
GND
GND
SDTA
SDEN
SCLK
CB6
C0
L0
CF1
CF2
RPS
RF
18
VEE_DIG
19
FS1/LD
20
VCC_PLL
21
TNK_LO
22
VEE_PLL
23
LF
29
GAIN_LNA
27
VEE_LNA
25
OUT_PA
26
IN_LNA
30
IN_MIX
31
VEE_IF
24
28
OUT_LNA
C5
C3
C4
RP
CB5
CERDIS
RL0
TH7122
INT1
5
INT2/PDO
4
IN_DEM
3
VCC_IF
2
32
OUT_MIX
IN_IFA
1
CTX4
CB2
LTX0
CTX1
CTX2
CTX0
LRX2
LTX1
CRX0
C2
C1
L1
CB1
CERFIL
RB1
CB4
VCC
50
TX_OUT
RX_IN
39012 07122 02
Rev. 005
Page 13 of 24
VCC
EVB Description
June/07
MELEXIS [ Melexis Microelectronic Systems ]
