TH7111
868/915MHz
FSK/FM/ASK Receiver
FSK test circuit with AFC component list to Fig. 3
Part
Size
Value / Type
Tolerance
Description
C1
C3
0805
0805
0603
0603
0603
0603
0603
0603
0805
0603
0603
0603
0603
0805
0805
15 pF
1 nF
±10%
±10%
±5%
crystal series capacitor
loop filter capacitor
C4
4.7 pF
2.7 pF
NIP
capacitor to match to SAW filter input
capacitor to match to SAW filter output
LNA output tank capacitor
MIX1 input matching capacitor
MIX1 blocking capacitor
C5
±5%
C6
±5%
C7
1.2 pF
330 pF
22 pF
33 nF
1 nF
±5%
C8
±10%
±5%
C9
IF1 tank capacitor
C10
C11
C12
C13
C14
CP
C15
±10%
±10%
±10%
±5%
IFA feedback capacitor
IFA feedback capacitor
1 nF
IFA feedback capacitor
1.5 pF
680 pF
27 pF
10 – 47 pF
DEMOD phase-shift capacitor
DEMOD coupling capacitor
ceramic resonator loading capacitor
±10%
±5%
±5%
demodulator output low-pass capacitor, depending on
data rate
C16
0805
0603
10 – 47 pF
±5%
demodulator output low-pass capacitor, depending on
data rate
C17
C18
C19
330 pF
33 nF
±10%
±10%
±10%
RSSI output low-pass capacitor
integrator capacitor, fixed
0805
33 nF
integrator capacitor, @ 0.5 to 2 kbit/s NRZ
integrator capacitor, @ 2 to 20 kbit/s NRZ
integrator capacitor, @ 20 to 40 kbit/s NRZ
loop filter resistor
10 nF
1 nF
R1
R3
R4
R5
L1
0805
0805
10 kΩ
100 kΩ
680 kΩ
680 kΩ
12 nH
12 nH
6.8 nH
100 nH
100 nH
BB535
±10%
±10%
±10%
±10%
±5%
varactor diode biasing resistor
integrator resistor
integrator resistor
0805
0805
0603
inductor to match SAW filter
inductor to match SAW filter
LNA output tank inductor
L2
0603
±5%
L3
0603
±5%
L4
0805
±5%
IF1 tank inductor
L5
0805
±5%
IF1 tank inductor
VD
XTAL
SOD-323
varactor diode from Infineon
HC49-
SMD
25.22353 MHz
±25ppm calibra-
fundamental-mode crystal, Cload = 10 pF to 15pF,
C0, max = 7 pF, Rm, max = 50 Ω
tion
@ RF = 868.3 MHz
±30ppm temp.
SAWFIL
CERFIL
QCC8C
B3570
low-loss SAW filter from EPCOS
ceramic filter from Murata
B
3dB = 1.7 MHz
TBD
@ RF = 868.3 MHz
SFE10.7MFP
leaded
type
@ BIF2 = 40 kHz
SFECV10.7MJS-A
@ BIF2 = 150 kHz
SMD type
±40 kHz
CERRES SMD type CDACV10.7MG18-A
ceramic demodulator tank from Murata
NIP – not in place, may be used optionally
TH7111 Data Sheet
3901007111
Page 14 of 20
Nov. 2001
Rev. 005
ETC [ ETC ]
