th71221 Melexis Company, th71221 Datasheet - Page 36

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

7.6
Software Settings for ASK
39010 071221
Rev. 006
315.00 MHz
434.00 MHz
915.00 MHz
frequency
Channel
Fig. 17: Test circuit for ASK operation in Programmable User Mode (internal Peak Detector option)
ASK Application Circuit Programmable User Mode (peak detector option)
TX_OUT
RX_IN
Combining
RR
80
80
80
network
L1
CB1
RB1
C1
LTX0
CRX0
CTX0
C2
CB2
f
3043
4233
9043
RO
NR
= 8.0000MHz
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
RT
8
8
8
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2
C6
TH71221
32L QFN 5x5
3
RF
CF1
R1
C0
4
L0
CB6
315
434
915
5
NT
R2
6
7
detect
Lock
C5
VCC_DIG
RE/SCLK
ASK/FSK
FSK_SW
IN_DTA
260µA
260µA
260µA
8
RX
RO
FSK/FM/ASK Transceiver
16
15
14
13
12
11
10
CPCUR
VEE_RO
9
RSSI
SDEN
CB7
SCLK
SDTA
1300µA
1300µA
1300µA
XTAL CX1
TX
VCC
3wire bus
output
input
ASK
ASK
TH71221
27 to 930MHz
CB0
300 µA
300 µA
300 µA
RX
VCOCUR
Data Sheet
900µA
900µA
900µA
June/08
TX