TH71071
315/433MHz
ASK Transmitter / LO Source
3901071071 Page 7 of 10 Data Sheet
Rev. 004 Dec. 2001
Test Circuit
Fig. 2: Test circuit for ASK
with 50Ω matching network
Test circuit component list to Fig. 2
Part Size Value Tolerance Description
CF1 0603 10 nF
±10%
loop filter capacitor
CF2 0603 56 pF
±10%
loop filter capacitor
CX 0603 68 pF
±10%
XOSC capacitor
C1 0603 2.7 pF
±5%
impedance matching capacitor
C2 0805 100 pF
±5%
impedance matching capacitor
C3 0805 3.9 pF
±5%
impedance matching capacitor
C4 0603 330 pF
±10%
blocking capacitor
C5 0603 330 pF
±10%
blocking capacitor
C6 0805 33 nF
±10%
blocking capacitor
L1 0603 22 nH
±5%
impedance matching inductor
L2 0603 27 nH
±5%
impedance matching inductor
L3
0603
33 nH
±5%
impedance matching inductor
RF1
0603
1.5 kΩ±10%
loop filter resistor
R1
0603
See output power
selection table
±10%
ASK power-select resistor, not requirement at CW mode
R2
0603
See output power
selection table
±10%
ASK or CW mode power-select resistor
XTAL HC49/S 13.55 MHz
fundamental wave
±30ppm
calibration
±30ppm temp.
crystal, C
load
= 12 pF to 15 pF, C
0, max
= 7 pF,
R
m, max
= 60 Ω
VCC
VEE
OUT1
OUT2
RO
LF
ENTX
PS
DATA
1
3
4
5
6
7
L1
L2
XTAL
CX
RF1
R2
CF1CF2
8
2
C1
DATA
GND
12
ENTX
GND
VCC
12
3
C4
OUT
C3
L3
C2
R1
C6
VCC
GND
1
2
C5
