th71112 Melexis Company, th71112 Datasheet - Page 17

• Manufacturer Part Number: th71112
• Description: Receiver - 868/915mhz Fsk/ask, Double-conversion Superhet Lqfp32
• Manufacturer: Melexis Company

4.3.2
39010 71112
Rev. 014
SAWFIL
CERFIL
XTAL
Part
C10
C11
C16
C17
C1
C3
C4
C5
C7
C8
C9
R1
R2
R4
L1
L2
L3
L4
L5
ASK Component List
• For component values for other frequencies, please refer to the EVB descriptions
3.45x3.1
Leaded
Size
6x3.5
0805
0603
0603
0603
0603
0603
0603
0603
0603
0805
0805
0603
0603
0805
0603
0603
0603
0805
0805
SMD
SMD
SMD
type
3x3
SAFCC868MSL0X00
@ RF = 868.3 MHz
SFECF10M7HA00
SFVLA10M7LF00
@ 868.3 MHz
(f
25.22353 MHz
0
=868.3 MHz)
Value
330 kΩ
100 nH
100 nH
4.7 pF
2.7 pF
1.0 pF
1.5 nF
330 Ω
22 pF
22 pF
33 nF
10 nF
10 kΩ
22 nH
22 nH
10 nH
1 nF
1 nF
1 nF
±30ppm temp.
B
Tolerance
B
B
±25ppm cal.
3dB
3dB
3dB
±10%
±10%
±10%
±10%
±10%
±10%
= 180 kHz
= 80 kHz
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
= 2 MHz
Page 17 of 22
crystal series capacitor
loop filter capacitor
capacitor to match SAW filter input
capacitor to match SAW filter output
MIX1 input matching capacitor
IF1 tank capacitor
IFA feedback capacitor
IFA feedback capacitor
IFA feedback capacitor
RSSI output low-pass capacitor,
this value for data rates < 10 kbps NRZ,
for higher data rates decrease the value
data slicer capacitor,
this value for data rates > 0.8 kbps NRZ,
for lower data rates increase the value
loop filter resistor
optional CERFIL output matching resistor
data slicer resistor
SAW filter matching inductor from Würth-Elektronik
(WE-KI series), or equivalent part
LNA output tank inductor from Würth-Elektronik (WE-KI series),
or equivalent part
IF1 tank inductor from Würth-Elektronik (WE-KI series)
or equivalent part
fundamental-mode crystal from
Telcona/Horizon or equivalent par
low-loss SAW filter from Murata, or equivalent part
ceramic filter from Murata, or equivalent part
optional, ceramic filter from Murata, or equivalent part
Description
FSK/ASK Receiver
TH71112
868/915MHz
Data Sheet
April/08