th71221 Melexis Company, th71221 Datasheet - Page 32

• Manufacturer Part Number: th71221
• Description: Transceiver - 27 To 930mhz, Fsk/fm/ask, Multi-channel 32l Qfn 5x5 Quad
• Manufacturer: Melexis Company

7.2
39010 071221
Rev. 006
FSK Application Circuit Stand-alone User Mode
TX_OUT
RX_IN
Combining
Fig. 15: Test circuit for FSK operation in Stand-alone User Mode
network
L1
CB1
RB1
C1
LTX0
CRX0
CTX0
C2
CB2
CB4
CTX4
27
28
29
30
32
25
26
31
OUT_PA
IN_LNA
OUT_LNA
GAIN_LNA
IN_MIX
VEE_IF
OUT_MIX
VEE_LNA
CB5
CF2
1
Page 32 of 44
2
TH71221
32L QFN 5x5
3
RF
CF1
RP
C0
C3
C3
4
L0
CB6
5
6
C4
see para. 4.1.1
7
C5
RE/SCLK
VCC_DIG
ASK/FSK
FSK_SW
IN_DTA
8
RO
FSK/FM/ASK Transceiver
16
15
13
12
14
11
10
VEE_RO
9
RSSI
CB7
LX
enable
XTAL
TX
VCC
enable
output
RX
input
FSK
FSK
CX2
TH71221
CX1
27 to 930MHz
CB0
Data Sheet
June/08