TH72011
433MHz
FSK Transmitter
Features
ꢀ Fully integrated PLL-stabilized VCO
ꢀ Frequency range from 380 MHz to 450 MHz
ꢀ Single-ended RF output
ꢀ High over-all frequency accuracy
ꢀ FSK deviation and center frequency
independently adjustable
ꢀ FSK through crystal pulling allows modulation
from DC to 40 kbit/s
ꢀ Adjustable output power range from
-12 dBm to +10 dBm
ꢀ High FSK deviation possible for wideband data
transmission
ꢀ Adjustable current consumption from
3.4 mA to 10.6 mA
ꢀ Wide power supply range from 1.95 V to 5.5 V
ꢀ Very low standby current
ꢀ Conforms to EN 300 220 and similar standards
ꢀ 8-pin Small Outline Integrated Circuit (SOIC)
ꢀ On-chip low voltage detector
Ordering Code
Product Code Temperature Code
Package Code
Option Code
BAA-000
BAA-000
Packing Form Code
TH72011
TH72011
K
K
DC
DC
RE
TU
Legend:
Temperature Code:
Package Code:
Packing Form:
K for Temperature Range -40°C to 125°C
DC for SOIC
RE for Reel, TU for Tube
Ordering example:
TH72011KDC-BAA-000-RE
Application Examples
Pin Description
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
General digital data transmission
Tire Pressure Monitoring System (TPMS)
Remote Keyless Entry (RKE)
Low-power telemetry
1
2
3
4
8
7
6
5
VEE
FSKDTA
FSKSW
ROI
OUT
VCC
PSEL
TH72011
Alarm and security systems
Garage door openers
ENTX
Home automation
General Description
The TH72011 FSK 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
any other country with similar frequency bands.
The transmitter's carrier frequency fc is determined by the frequency of the reference crystal fref. The
integrated PLL synthesizer ensures that each RF value, ranging from 380 MHz to 450 MHz, can be achieved
by using a crystal with a reference frequency according to: fref = fc/N, where N = 32 is the PLL feedback
divider ratio.
3901072011
Rev. 011
Page 1 of 20
Data Sheet
Jun/12