TH72031KDC Melexis Inc, TH72031KDC Datasheet - Page 7

• Manufacturer Part Number: TH72031KDC
• Description: 868/915 MHZ, FSK TRANSMITTER
• Manufacturer: Melexis Inc

Specifications of TH72031KDC

• Frequency: 868MHz, 915MHz
• Applications: Alarm and Security Systems, RKE
• Modulation Or Protocol: FSK
• Data Rate - Maximum: 40 kbps
• Power - Output: -11dBm ~ 9dBm
• Current - Transmitting: 5.1mA ~ 13.4mA
• 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: Q3477881B

3 Pin Definition and Description
3901072031
Rev. 010
Pin No.
1
2
3
4
5
6
7
8
FSKDTA
FSKSW
ROI
ENTX
PSEL
VCC
OUT
VEE
Name
input
analog I/O
analog I/O
input
analog I/O
supply
output
ground
I/O Type
FSKDTA
ENTX
1
4
PSEL
5
Functional Schematic
ROI
OUT
3
FSKSW
7
VEE
1.5k
2
Page 7 of 20
1.5k
Ω
1.5k
Ω
36p
36p
25k
Ω
0: ENTX=1
1: ENTX=0
I
VCC
PSEL
VEE
FSK data input,
CMOS compatible with op-
eration mode dependent
pull-up circuit
TX standby: no pull-up
TX active: pull-up
XOSC FSK pulling pin,
MOS switch
XOSC connection to XTAL,
Colpitts type crystal oscilla-
tor
mode control input,
CMOS-compatible with in-
ternal pull-down circuit
power select input, high-
impedance comparator logic
TX standby: I
TX active: I
positive power supply
power amplifier output,
open collector
negative power supply
FSK Transmitter
TH72031
Description
PSEL
868/915MHz
PSEL
= 8µA
= 0
Data Sheet
Jan/09