TH72036_12 Datasheet, PDF (7/15 Pages) Melexis Microelectronic Systems – FSK/ASK Transmitter

3 Pin Definition and Description
Pin No. Name
1 FSKDTA
I/O Type
input
Functional Schematic
FSKDTA
1.5kΩ
0: ENTX=1
1: ENTX=0
1
2 FSKSW
analog I/O
FSKSW
2
TH72036
868/915MHz
FSK/ASK Transmitter
Description
FSK data input,
CMOS compatible with in-
ternal pull-up circuit
TX standby: no pull-up
TX active: pull-up
XOSC FSK pulling pin,
MOS switch
3 ROI
4 EN
analog I/O
input
25k
ROI
3
36p
36p
EN
1.5kΩ
4
XOSC connection to XTAL,
Colpitts type crystal oscillator
mode control input,
CMOS-compatible with in-
ternal pull-down circuit
5 CKOUT
output
CKOUT
5
400Ω
clock output,
CMOS-compatible
6 PSEL
7 CKDIV
8 OUT
analog I/O
input
output
PSEL
6
1.5kΩ
CKDIV
7
1.5kΩ
OUT
8
8µA
0: ENTX=0
1: ENTX=1
VCC
power select input, high-
impedance comparator logic
TX standby: I_PSEL = 0
TX active: I_PSEL = 8µA
clock divider control input,
CMOS compatible with in-
ternal pull-down circuit
TX standby: no pull-down
TX active: pull-down
power amplifier output,
open collector
VEE
VEE
9 VEE
ground
negative power supply
10 VCC
supply
positive power supply
3901072036
Rev. 009
Page 7 of 15
Data Sheet
Jun/12