TH72016_12 Datasheet, PDF (1/15 Pages) Melexis Microelectronic Systems – FSK/ASK Transmitter

TH72016
433MHz
FSK/ASK Transmitter
Features
Fully integrated PLL-stabilized VCO
Frequency range from 380 MHz to 450 MHz
Single-ended RF output
FSK through crystal pulling allows modulation
from DC to 40 kbit/s
High FSK deviation possible for wideband data
transmission
ASK achieved by on/off keying of internal
power amplifier up to 40 kbit/s
Wide power supply range from 1.95 V to 5.5 V
Very low standby current
Microcontroller clock output
On-chip low voltage detector
High over-all frequency accuracy
FSK deviation and center frequency
independently adjustable
Adjustable output power range from
-12 dBm to +10 dBm
Adjustable current consumption from
3.8 mA to 11.0 mA
Conforms to EN 300 220 and similar standards
10-pin quad flat no lead (QFN) package
Ordering Code
Product Code Temperature Code
TH72016
K
TH72016
K
Package Code
LD
LD
Option Code
CAA-000
CAA-000
Packing Form Code
TU
RE
Legend:
Temperature Code:
Package Code:
Packing Form:
K for Temperature Range -40°C to 125°C
LD for QFN double
RE for Reel, TU for Tube
Ordering example
TH72016KLD-CAA-000-TU
Application Examples
Tire Pressure Monitoring System (TPMS)
Remote Keyless Entry (RKE)
Automatic Meter Reading (AMR)
Alarm and security systems
Garage door openers
Home and building automation
Low-power telemetry
Wireless access control
Pin Description
FSKDTA
FSKSW
ROI
ENTX
CKOUT
top view
VCC
VEE
OUT
CKDIV
PSEL
General Description
The TH72016 FSK/ASK transmitter IC is designed for applications in the European 433 MHz industrial-
scientific-medical (ISM) band, according to the EN 300 220 telecommunications standard; but it can also be
used in other countries with similar standards, e.g. FCC part 15.231.
The transmitter's carrier frequency f_c is determined by the frequency of the reference crystal f_ref. The inte-
grated PLL synthesizer ensures that carrier frequencies, ranging from 380 MHz to 450 MHz, can be
achieved. This is done by using a crystal with a reference frequency according to: f_ref = f_c/N, where N = 32 is
the PLL feedback divider ratio.
A clock signal with selectable frequency is provided. It can be used to drive a microcontroller.
39010 72016
Rev. 009
Page 1 of 15
Data Sheet
Jan/12