th71221 Melexis Company, th71221 Datasheet - Page 31

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

7
7.1
39010 071221
Rev. 006
Application Circuit Examples
FSK Application Circuit Programmable User Mode (internal AFC option)
Fig. 14: Test circuit for FSK operation in Programmable User Mode (internal AFC option)
TX_OUT
RX_IN
Combining
network
L1
RB1
CB1
C1
LTX0
CRX0
CTX0
C2
CB2
CB4
CTX4
25
26
27
28
29
30
31
32
OUT_PA
IN_LNA
OUT_LNA
GAIN_LNA
IN_MIX
VEE_IF
OUT_MIX
VEE_LNA
CB5
CF2
1
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2
TH71221
32L QFN 5x5
3
RF
CF1
RP
C0
C3
4
L0
CB6
5
6
C4
7
detect
Lock
VCC_DIG
C5
RE/SCLK
ASK/FSK
FSK_SW
IN_DTA
8
RO
FSK/FM/ASK Transceiver
16
15
14
13
12
11
10
9
VEE_RO
RSSI
SDEN
CB7
SDTA
SCLK
LX
XTAL
VCC
3wire bus
output
input
FSK
FSK
CX2
TH71221
CX1
27 to 930MHz
CB0
Data Sheet
June/08