TH72035KLD Melexis Inc, TH72035KLD Datasheet - Page 17

• Manufacturer Part Number: TH72035KLD
• Description: TRANSMITTER, FSK/ASK, 433MHZ, 10QFN
• Manufacturer: Melexis Inc

Specifications of TH72035KLD

• Transmitting Current: 17.3mA
• Data Rate: 40Kbps
• Frequency Range: 850MHz To 930MHz
• Modulation Type: ASK, FSK
• Rf Ic Case Style: QFN
• No. Of Pins: 10
• Supply Voltage Range: 1.95V To 5.5V
• Operating: RoHS Compliant
• Output Power: 9.5dBm
• Rohs Compliant: Yes

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
39010 72035
Rev. 009
CX1
CX1
XTAL
Part
CM1
CM2
CM3
RPS
CX2
CB0
CB1
LM
LT
_ASK
_FSK
HC49/S
Size
0805
0805
0805
0805
0805
0805
0805
0805
0805
0805
0805
27.13438 MHz
Fig. 18: Test circuit for FSK and ASK with 50 Ω matching network
868.3 MHz
Value @
1.8 pF
5.6 pF
68 pF
12 nH
15 nH
18 pF
10 pF
27 pF
see section 4.6
220 nF
330 pF
28.59375 MHz ±30ppm calibr.
Value @
915 MHz
2.2 pF
5.6 pF
10 nH
10 nH
68 pF
18 pF
27 pF
10 pF
OUT
1
2
CM2
CB1
LM
CB0
±30ppm temp.
Page 17 of 20
1
Tolerance
2 3 4
CM3
10
±20%
±10%
1
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
LT
2
9
CX2
CM1
CX1
8
3
7
impedance matching capacitor
impedance matching capacitor
impedance matching capacitor
impedance matching inductor, note 2
output tank inductor, note 2
XOSC FSK capacitor (Δf = ±20 kHz), note 1
XOSC ASK capacitor, trimmed to f
XOSC capacitor (Δf = ±20 kHz), note 1
only needed for FSK
power-select resistor
de-coupling capacitor
de-coupling capacitor
fundamental wave crystal,
C
4
1
L
= 12 pF, C
2 3
6
5
XTAL
RPS
FSK/ASK Transmitter
0, max
Description
= 7 pF, R
TH72035
868/915MHz
1
= 40 Ω
C
Data Sheet
, note 1
March/08