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TH72016KLD-CAA-000-TU

P1-P3P4-P6P7-P9P10-P12P13-P15
TH72016
433MHz
FSK/ASK Transmitter
39010 72016 Page 1 of 15 Data Sheet
Rev. 009 Jan/12
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 Package Code Option Code Packing Form Code
TH72016 K LD CAA-000 TU
TH72016 K LD CAA-000 RE
Legend:
Temperature Code: K for Temperature Range -40°C to 125°C
Package Code: LD for QFN double
Packing Form: 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
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.
top view
OUT
VEE
VCC
CKDIV
PSEL
CKOUT
FSKSW
ROI
ENTX
FSKDTA
TH72016
433MHz
FSK/ASK Transmitter
39010 72016 Page 2 of 15 Data Sheet
Rev. 009 Jan/12
Document Content
1
Theory of Operation ................................................................................................... 3
1.1 General .............................................................................................................................. 3
1.2 Block Diagram .................................................................................................................... 3
2
Functional Description .............................................................................................. 3
2.1 Crystal Oscillator ................................................................................................................ 3
2.2 FSK Modulation ................................................................................................................. 4
2.3 Crystal Pulling .................................................................................................................... 4
2.4 ASK Modulation ................................................................................................................. 5
2.5 Output Power Selection...................................................................................................... 5
2.6 Lock Detection ................................................................................................................... 5
2.7 Low Voltage Detection ....................................................................................................... 5
2.8 Mode Control Logic ............................................................................................................ 6
2.9 Clock Output ...................................................................................................................... 6
2.10 Timing Diagrams ............................................................................................................. 6
3
Pin Definition and Description .................................................................................. 7
4
Electrical Characteristics .......................................................................................... 8
4.1 Absolute Maximum Ratings ................................................................................................ 8
4.2 Normal Operating Conditions ............................................................................................. 8
4.3 Crystal Parameters ............................................................................................................ 8
4.4 DC Characteristics ............................................................................................................. 9
4.5 AC Characteristics ........................................................................................................... 10
4.6 Output Power Steps – FSK Mode .................................................................................... 11
4.7 Output Power Steps – ASK Mode .................................................................................... 11
5
Test Circuit ............................................................................................................... 12
5.1 Test circuit component list to Fig. 6 .................................................................................. 12
6
Package Description ................................................................................................ 13
6.1 Soldering Information ....................................................................................................... 13
6.2 Recommended PCB Footprints ........................................................................................ 13
7
Standard information regarding manufacturability of Melexis products with
different soldering processes ................................................................................. 14
8
ESD Precautions ...................................................................................................... 14
9
Disclaimer ................................................................................................................. 15
TH72016
433MHz
FSK/ASK Transmitter
39010 72016 Page 3 of 15 Data Sheet
Rev. 009 Jan/12
1 Theory of Operation
1.1 General
As depicted in Fig.1, the TH72016 transmitter consists of a fully integrated voltage-controlled oscillator
(VCO), a divide-by-32 divider (div32), a phase-frequency detector (PFD) and a charge pump (CP). An inter-
nal loop filter determines the dynamic behavior of the PLL and suppresses reference spurious signals. A
Colpitts crystal oscillator (XOSC) is used as the reference oscillator of a phase-locked loop (PLL) synthe-
sizer. The VCO’s output signal feeds the power amplifier (PA). The RF signal power P
out
can be adjusted in
four steps from P
out
= –12 dBm to +10 dBm, either by changing the value of resistor RPS
or by varying the
voltage V
PS
at pin PSEL. The open-collector output (OUT) can be used either to directly drive a loop antenna
or to be matched to a 50Ohm load. Bandgap biasing ensures stable operation of the IC at a power supply
range of 1.95 V to 5.5 V.
1.2 Block Diagram
Fig. 1: Block diagram with external components
2 Functional Description
2.1 Crystal Oscillator
A Colpitts crystal oscillator with integrated functional capacitors is used as the reference oscillator for the PLL
synthesizer. The equivalent input capacitance CRO offered by the crystal oscillator input pin ROI is about
18pF. The crystal oscillator is provided with an amplitude control loop in order to have a very stable fre-
quency over the specified supply voltage and temperature range in combination with a short start-up time.
CX1
FSKDTA
antenna
matching
network
XOSC
PA
XBUF
PLL
CP
PFD
32
OUT
PSEL
ASKDTA
RPS
R1
FSKSW
ROI
XTAL
CX2
VEE
9
1
8
6
3
2
10
VCC
mode
control
EN
4
div 4
div 16
CKDIV
CKOUT
5
7
P1-P3P4-P6P7-P9P10-P12P13-P15

TH72016KLD-CAA-000-TU

Mfr. #:
Buy TH72016KLD-CAA-000-TU
Manufacturer:
Melexis
Description:
RF Transmitter 433MHz FSK/ASK Transmitter w/ clock O/P
Lifecycle:
New from this manufacturer.
Delivery:
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