TH72016_12 datasheet(7/15 Pages) MELEXIS

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TH72016

433MHz

FSK/ASK Transmitter

39010 72016

Page 7 of 15

Data Sheet

Rev. 009

Jan/12

3 Pin Definition and Description

Pin No.

Name

I/O Type

Functional Schematic

Description

FSKDTA

input

FSK data input,

CMOS compatible with in-

ternal pull-up circuit

TX standby: no pull-up

TX active: pull-up

FSKSW

analog I/O

XOSC FSK pulling pin,

MOS switch

ROI

analog I/O

XOSC connection to XTAL,

Colpitts type crystal oscilla-

tor

input

mode control input,

CMOS-compatible with in-

ternal pull-down circuit

CKOUT

output

clock output,

CMOS-compatible

PSEL

analog I/O

power select input, high-

impedance comparator logic

TX standby: IPSEL = 0

TX active: IPSEL = 8µA

CKDIV

input

clock divider control input,

CMOS compatible with

internal pull-down circuit

TX standby: no pull-down

TX active: pull-down

OUT

output

power amplifier output,

open collector

VEE

ground

negative power supply

VCC

supply

positive power supply

1.5k

Ω

0: ENTX=1

1: ENTX=0

FSKDTA

FSKSW

ROI

36p

25k

1.5k

Ω

CKOUT

400

Ω

PSEL

1.5k

Ω

8µA

1.5k

Ω

CKDIV

0: ENTX=0

1: ENTX=1

OUT

VEE

VCC

VEE

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