900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Melexis

TH72012 Datasheet Preview

TH72012 Datasheet

ASK Transmitter

No Preview Available !

TH72012
433MHz
ASK Transmitter
Features
! Fully integrated PLL-stabilized VCO
! Frequency range from 380 MHz to 450 MHz
! Single-ended RF output
! 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
! On-chip low voltage detector
! High over-all frequency accuracy
! Adjustable output power range from
-12 dBm to +11 dBm
! Adjustable current consumption from
3.2 mA to 10.3 mA
! Conforms to EN 300 220 and similar standards
! 8-pin Small Outline Integrated Circuit (SOIC)
Ordering Information
Part Number
Temperature Code
TH72012
K (-40°C to 125°C)
Package Code
DC (SOIC8)
Delivery Form
98 pc/tube
2500 pc/T&R
Application Examples
! General digital data transmission
! Tire Pressure Monitoring Systems (TPMS)
! Remote Keyless Entry (RKE)
! Wireless access control
! Alarm and security systems
! Garage door openers
! Remote Controls
! Home and building automation
! Low-power telemetry systems
Pin Description
ASKDTA 1
n. c. 2
ROI 3
ENTX 4
TH72012
8 VEE
7 OUT
6 VCC
5 PSEL
General Description
The TH72012 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 fc is determined by the frequency of the reference crystal fref. 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: fref = fc/N, where N = 32 is
the PLL feedback divider ratio.
39010 72012
Rev. 009
Page 1 of 20
Data Sheet
July/06




Melexis

TH72012 Datasheet Preview

TH72012 Datasheet

ASK Transmitter

No Preview Available !

TH72012
433MHz
ASK Transmitter
Document Content
1 Theory of Operation ...................................................................................................3
1.1 General............................................................................................................................. 3
1.2 Block Diagram .................................................................................................................. 3
2 Functional Description ..............................................................................................4
2.1 Crystal Oscillator .............................................................................................................. 4
2.2 ASK Modulation................................................................................................................ 4
2.3 Crystal Pulling................................................................................................................... 4
2.4 Output Power Selection.................................................................................................... 5
2.5 Lock Detection.................................................................................................................. 5
2.6 Low Voltage Detection...................................................................................................... 5
2.7 Mode Control Logic .......................................................................................................... 6
2.8 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 ....................................................................................................... 10
5 Typical Operating Characteristics ..........................................................................11
5.1 DC Characteristics.......................................................................................................... 11
5.2 AC Characteristics .......................................................................................................... 14
6 Test Circuit ...............................................................................................................17
6.1 Test circuit component list to Fig. 18 .............................................................................. 17
7 Package Description ................................................................................................18
7.1 Soldering Information ..................................................................................................... 18
8 Reliability Information..............................................................................................19
9 ESD Precautions ......................................................................................................19
10 Disclaimer .................................................................................................................20
39010 72012
Rev. 009
Page 2 of 20
Data Sheet
July/06


Part Number TH72012
Description ASK Transmitter
Maker Melexis
Total Page 20 Pages
PDF Download

TH72012 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 TH72011 FSK Transmitter
Melexis
2 TH72012 ASK Transmitter
Melexis
3 TH72015 FSK/ASK Transmitter
Melexis
4 TH72016 FSK/ASK Transmitter
Melexis





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy