TH71072 Datasheet, PDF (7/10 Pages) List of Unclassifed Manufacturers – ASK Transmitter / LO Source

Test Circuit
Fig. 2: Test circuit for ASK
with 50Ω matching network
TH71072
315/433MHz
ASK Transmitter / LO Source
OUT
C2
L2 ^C1 L1 ^C3
R2
R1
CX
RF1
XTAL
CF2 CF1
C4
12 3 12 12 12
Test circuit component list to Fig. 2
Part Size
Value
CF1
CF2
CX
C1
C2
C3
C4
L1
L2
RF1
R1
R2
XTAL
0603
0603
0603
0603
0603
0603
0805
0603
0603
0603
0603
0603
HC49/S
10 nF
150 pF
120 pF
1 nF
3.3 pF
330 pF
33 nF
270 nH
56 nH
470 Ω
See output power
selection table
See output power
selection table
13.55 MHz
fundamental wave
Tolerance
±10%
±10%
±10%
±5%
±5%
±10%
±10%
±5%
±5%
±10%
±10%
Description
loop filter capacitor
loop filter capacitor
XOSC capacitor
impedance matching capacitor
impedance matching capacitor
blocking capacitor
blocking capacitor
impedance matching inductor
impedance matching inductor
foop filter resistor
ASK power-select resistor, not requirement at CW mode
±10%
ASK or CW mode power-select resistor
±30ppm
calibration
±30ppm temp.
crystal, Cload = 12 pF to 15 pF, C0, max = 7 pF,
Rm, max = 60 Ω
3901071072
Rev. 004
Page 7 of 10
Data Sheet
Dec. 2001