th7121 ETC-unknow, th7121 Datasheet - Page 21

• Manufacturer Part Number: th7121
• Description: 300 To 930mhz Fsk/fm/ask Transceiver
• Manufacturer: ETC-unknow

FSK test circuit component list to Fig. 4 and Fig. 5
Notes:
3901007121
Rev. 001
CB1 to CB4
CERRES
CERFIL
CRX0
CTX0
NIP – not in place, may be used optionally
Antenna matching network according to Evaluation Board Description EVB7120
Part
XTAL
LTX0
RPS
CB0
CB5
CB6
CB7
CF1
CF2
CX1
CX2
CP0
RF1
VD1
RB
RP
C0
C1
C2
C3
C4
C5
RF
L0
L1
HC49-SMD
SMD type
SOD-323
Leaded
Size
0805
0603
0603
0805
0805
0805
0805
0805
0603
0603
0603
0603
0805
0805
0805
0805
0805
0603
0603
0805
0805
0805
0805
0805
0805
0603
0805
SMD
type
type
CDACV10.7MG18-A
SFECV10.7MJS-A
@ B
@ 868.3 MHz
SFE10.7MFP @
2.2 nH // 2.7 pF
B
7.1505 MHz
10 - 12 pF
BBY-03W
IF2
IF2
Value
100 pF
330 pF
100 nF
330 pF
330 pF
330 pF
100 pF
100 pF
3.9 K
9.1 k
2.2 nH
8.2 pF
2.2 nF
82 k
10 nH
10 nF
10 nF
15 pF
33 pF
10 pF
10
= 40 kHz
1 pF
NIP
NIP
= 150 kHz
Tolerance
30ppm calibr.
30ppm temp.
40 kHz
TBD
10%
10%
10%
10%
10%
10%
10%
10%
10%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
Page 21 of 28
VCO tank capacitor
LNA output tank capacitor
MIX input matching capacitor
data slicer capacitor
demodulator output low-pass capacitor,
depending on data rate
RSSI output low pass capacitor
blocking capacitor
blocking capacitor
blocking capacitor
blocking capacitor
blocking capacitor
loop filter capacitor
loop filter capacitor
RO capacitor
RO capacitor for FSK ( f = 20 kHz)
CERRES parallel capacitor
RX coupling capacitor
TX coupling capacitor
blocking resistor for VCC
CERFIL parallel resistor
loop filter resistor
loop filter resistor
power-select resistor, only required
at fixed-frequency operation
VCO tank inductor
LNA output tank inductor
TX impedance matching inductor
varactor diode from Infineon
fundamental-mode crystal, C
C
ceramic filter from Murata
ceramic filter from Murata
ceramic demodulator tank from Murata
0, max
= 7 pF, R
FSK/FM/ASK Transceiver
m, max
= 70
Description
load
= 10 pF to 15pF,
300 to 930MHz
TH7121
Data Sheet
Jan. 2002