TH71072
315/433MHz
ASK Transmitter / LO Source
3901071072 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 150 pF
±10%
loop filter capacitor
CX 0603 120 pF
±10%
XOSC capacitor
C1 0603 1 nF
±5%
impedance matching capacitor
C2 0603 3.3 pF
±5%
impedance matching capacitor
C3 0603 330 pF
±10%
blocking capacitor
C4 0805 33 nF
±10%
blocking capacitor
L1 0603 270 nH
±5%
impedance matching inductor
L2 0603 56 nH
±5%
impedance matching inductor
RF1 0603
470 Ω±10%
foop 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
OUT
RO
LF
ENTX
CKOUT
PS
DATA
1
3
4
5
6
7
L1L2
XTAL
CX
RF1
R1
CF1CF2
8
2
C1
CKOUT
GND
1
2
ENTX
GND
VCC
12 3
DATA
GND
1
2
C3
OUT
C2
R2
C4
VCC
GND
1
2
