TH72036 Datasheet, PDF (7/16 Pages) Melexis Microelectronic Systems – 868/915MHz FSK/ASK Transmitter

TH72036
868/915MHz
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
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
4
5
PRELIMINARY ^ROI
analog I/O
EN
input
CKOUT
output
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
clock output,
CMOS-compatible
CKOUT
400Ω
5
6 PSEL
7 CKDIV
8 OUT
analog I/O
8µA
PSEL
1.5kΩ
6
input
output
CKDIV
7
1.5kΩ
OUT
8
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
9 VEE
ground
10 VCC
supply
VEE
negative power supply
positive power supply
3901072036
Rev. 005
Page 7 of 16
Data Sheet
June/07