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TH71072 Datasheet(PDF) 7 Page - Melexis Microelectronic Systems

Part No. TH71072
Description  315/433MHz ASK Transmitter / LO Source
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Maker  MELEXIS [Melexis Microelectronic Systems]
Homepage  http://www.melexis.com
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TH71072 Datasheet(HTML) 7 Page - Melexis Microelectronic Systems

 
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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 50
Ω 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, Cload = 12 pF to 15 pF, C0, max = 7 pF,
Rm, max = 60
L1
L2
XTAL
CX
RF1
R1
CF1
CF2
C1
1 2
12 3
1 2
C3
OUT
C2
R2
C4
1 2


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