TH72001KDC Melexis Inc, TH72001KDC Datasheet - Page 17

• Manufacturer Part Number: TH72001KDC
• Description: 315 MHZ, FSK TRANSMITTER
• Manufacturer: Melexis Inc

Specifications of TH72001KDC

• Frequency: 315MHz
• Applications: Alarm and Security Systems, RKE
• Modulation Or Protocol: FSK
• Data Rate - Maximum: 40 kbps
• Power - Output: -10dBm ~ 11dBm
• Current - Transmitting: 3.2mA ~ 10.3mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 1.9 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Memory Size: -
• Other names: Q3477881; TH72001.2

6 Test Circuit
6.1 Test circuit component list to Fig. 18
Note 1: value depending on crystal parameters
Note 2: for high-power applications high-Q wire-wound inductors should be used
3901072001
Rev. 008
XTAL
Part
CM1
CM2
CM3
RPS
CX1
CX2
CB0
CB1
LM
LT
HC49/S
Size
0805
0805
0805
0805
0805
0805
0805
0805
1206
0805
see section 4.6
9.84375MHz
315 MHz
Value @
Fig. 18: Test circuit for FSK with 50 Ω matching network
220 nF
330 pF
47 nH
33 nH
10 pF
15 pF
82 pF
15 pF
47 pF
OUT
CM2
±30ppm calibr.
±30ppm temp.
1
LM
Tolerance
2 3
8
±20%
±10%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
CM3
CX2
CM1
Page 17 of 20
7
CB0
LT
impedance matching capacitor
impedance matching capacitor
impedance matching capacitor
impedance matching inductor, note 2
output tank inductor, note 2
XOSC capacitor (Δf = ±20 kHz), note 1
XOSC capacitor (Δf = ±20 kHz), note 1
power-select resistor
de-coupling capacitor
de-coupling capacitor
fundamental wave crystal,
C
L
6
= 12 pF, C
CX1
CB1
XTAL
1
2 3
5
RPS
0, max
1
2
= 7 pF, R
Description
1
= 60 Ω
FSK Transmitter
TH72001
315MHz
Data Sheet
March/08