TH72011 Datasheet, PDF (17/20 Pages) Melexis Microelectronic Systems – 433MHz FSK Transmitter

6 Test Circuit
OUT
CM2
CM1
LM CM3
LT
8
7
CB1
RPS
6
5
TH72011
433MHz
FSK Transmitter
CX2
XTAL
CX1
12 3
CB0
12 3 12
Fig. 18: Test circuit for FSK with 50 Ω matching network
6.1 Test circuit component list to Fig. 18
Part Size
CM1
CM2
CM3
LM
LT
CX1
CX2
RPS
CB0
CB1
XTAL
0805
0805
0805
0805
0805
0805
0805
0805
1206
0805
HC49/S
Value @
433.92 MHz
5.6 pF
10 pF
82 pF
33 nH
33 nH
12 pF
33 pF
see section 4.6
220 nF
330 pF
13.56000 MHz
Tolerance
Description
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±20%
±10%
±30ppm calibr.
±30ppm temp.
impedance matching capacitor
impedance matching capacitor
impedance matching capacitor
impedance matching inductor, note 2
output tank inductor, note 2
XOSC capacitor (Δf = ±28 kHz), note 1
XOSC capacitor (Δf = ±28 kHz), note 1
power-select resistor
de-coupling capacitor
de-coupling capacitor
fundamental wave crystal,
C_L = 12 pF, C_{0, max} = 7 pF, R₁ = 60 Ω
Note 1: value depending on crystal parameters
Note 2: for high-power applications high-Q wire-wound inductors should be used
39010 72011
Rev. 008
Page 17 of 20
Data Sheet
June /07