TH72011_12 Datasheet, PDF (7/20 Pages) Melexis Microelectronic Systems – FSK Transmitter

3 Pin Definition and Description
Pin No. Name
1 FSKDTA
I/O Type
input
Functional Schematic
0: ENTX=1
1: ENTX=0
FSKDTA
1
1.5kΩ
2 FSKSW
analog I/O
FSKSW
2
3 ROI
4 ENTX
analog I/O
input
25k
ROI
3
36p
36p
ENTX
4
1.5kΩ
TH72011
433MHz
FSK Transmitter
Description
FSK data input,
CMOS compatible with
operation 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
oscillator
mode control input,
CMOS-compatible with
internal pull-down circuit
5 PSEL
6 VCC
7 OUT
analog I/O
supply
output
PSEL
5
1.5kΩ
OUT
7
power select input, high-
impedance comparator logic
I_PSEL
TX standby: I_PSEL = 0
TX active: I_PSEL = 8µA
positive power supply
VCC
power amplifier output,
open collector
VEE
8 VEE
ground
VEE
negative power supply
3901072011
Rev. 011
Page 7 of 20
Data Sheet
Jun/12