TH71221_15 Datasheet, PDF (33/44 Pages) Melexis Microelectronic Systems – FSK/FM/ASK Transceiver

TH71221
27 to 930MHz
FSK/FM/ASK Transceiver
7.3 FSK Test Circuit Component List (Fig. 14 and Fig. 15)
Part
C0
C1
C2
C3
C4
C5
CB0
CB1
CB2
CB4
CB5
CB6
CB7
CF1
CF2
CPS
CX1
CX2
CRX0
CTX0
CTX4
RB1
RF
RP
RPS
L0
L1
LTX0
LX
XTAL
CERFIL
CERDIS
Note:
Size
0603
0603
0603
0603
0603
0603
1210
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
Value @ Value @ Value @
315 MHz 433.92 MHz 868.3 MHz
1.2 pF
3.9 pF
1.5 pF
10 nF
1.5 pF
5.6 pF
1.5 pF
10 nF
1.8 pF
2.2 pF
1.5 pF
10 nF
330 pF
330 pF
330 pF
1.5 nF
10 μF
10 nF
330 pF
10 nF
100 nF
100 pF
100 nF
1 nF
68 pF
10 nF
8.2 pF
150 pF
100 pF
10 pF
12 pF
100 
47 k
3.3 k
22 k
1.5 nF
10 μF
10 nF
330 pF
10 nF
100 nF
100 pF
100 nF
1 nF
120 pF
10 nF
10 pF
56 pF
100 pF
10 pF
4.7 pF
100 
47 k
3.3 k
33 k
1.5 nF
10 μF
10 nF
330 pF
10 nF
100 nF
100 pF
100 nF
1 nF
150 pF
10 nF
12 pF
18 pF
100 pF
10 pF
2.2 pF
100 
33 k
3.3 k
47 k
Value @
915 MHz
0.82 pF
1.8 pF
1.5 pF
10 nF
330 pF
1.5 nF
10 μF
10 nF
330 pF
10 nF
100 nF
100 pF
100 nF
1 nF
82 pF
10 nF
12 pF
15 pF
100 pF
10 pF
1.8 pF
100 
33 k
3.3 k
47 k
0603
47 nH
22 nH
3.9 nH
3.9 nH
0603
33 nH
15 nH
4.7 nH
4.7 nH
0603
15 nH
15 nH
3.9 nH
3.9 nH
0603
0
HC49
SMD
7x5
SMD
3.45x3.1
SMD
4.5x2
0
10 nH
7.1505 MHz
20ppm cal., 20ppm temp.
SFECF10M7HA00
B3dB = 180 kHz
CDSCB10M7GA136
10 nH
- Antenna matching network according to paragraph 9
Tol.
Description
5% VCO tank capacitor
5% LNA output tank capacitor
5% MIX input matching capacitor
10% data slicer capacitor
5% demodulator output low-pass
capacitor, depending on data rate
10% RSSI output low pass capacitor
20% de-coupling capacitor
10% de-coupling capacitor
10% de-coupling capacitor
10% de-coupling capacitor
10% de-coupling capacitor
10% de-coupling capacitor
10% de-coupling capacitor
10% loop filter capacitor
5% loop filter capacitor
10% power-select capacitor
5% RO capacitor for FSK (f = 20 kHz)
5% RO capacitor for FSK (f = 20 kHz)
5% RX coupling capacitor
5% TX coupling capacitor
5% TX impedance matching capacitor
5% protection resistor
5% loop filter resistor
5% CERDIS loading resistor
5% power-select resistor
VCO tank inductor
5% from Würth-Elektronik (WE-KI series)
or equivalent part
LNA output tank inductor
5% from Würth-Elektronik (WE-KI series)
or equivalent part
impedance matching inductor
5% from Würth-Elektronik (WE-KI series)
or equivalent part
5% RO inductor
fundamental-mode crystal,
Cload = 10 pF to 15pF, C0, max = 7 pF,
Rm, max = 70 
ceramic filter from Murata,
or equivalent part
ceramic Discriminator from Murata,
or equivalent part
39010 071221
Rev. 009
Page 33 of 44
Data Sheet
Nov/15