|
Semtech |
SX1240
ADVANCED COMMUNICATIONS & SENSING
SX1240 - Low Cost Integrated Transmitter IC
434 MHz and 868 MHz Band RF Transmitter
DATASHEET
GENERAL DESCRIPTION
The SX1240 is an ultra-low-cost, fully integrated FSK or
OOK compatible transmitter suitable for operation in the
418, 434 and 868 MHz licence free ISM bands.
For applications where economy is paramount, the SX1240
may be used without the requirement for configuration via
an MCU. The transmitter is configured for default operation
at a frequency of 433.92 MHz or 868.3 MHz. However, in
conjunction with a microcontroller the communication link
parameters may be re-configured. Including, output power,
modulation format and operating channel.
The SX1240 offers integrated radio performance with cost
efficiency and is suited for worldwide operations in
particular Europe (ETSI EN 300-220-1), North America
(FCC part 15.231).
ORDERING INFORMATION
Part Number Temperature Range Qty. per Reel
SX1240ISTRT
-40 °C to +85 °C
2500
Package
SOIC8-EP
Pb-Free, Halogen Free, RoHS/WEEE compliant product.
APPLICATIONS
Low-Cost Consumer Electronic Applications
Remote Keyless Entry (RKE)
Remote Control / Security Systems
Audio Accessories
Process and building / home control
Active RFID
KEY PRODUCT FEATURES
+10 dBm or 0 dBm Configurable output power
Bit rates up to 100 kbps
FSK and OOK modulation
2 Preconfigured Modes for Operation without MCU
433.92 MHz OOK & 868.3 MHz FSK
1.8 to 3.7 V supply range
Low BOM Fully Integrated Txwww.DataSheet.co.kr
8 Selectable Centre Frequencies
Programmable Frequency Tuning of low cost XTAL
SX1240, Rev 1, Oct 2010
©2010 Semtech Corp.
Page 1
www.semtech.com
Datasheet pdf - http://www.DataSheet4U.net/
SX1240
ADVANCED COMMUNICATIONS & SENSING
Table of contents
Section
DATASHEET
Page
1. General Description ................................................................................................................................................. 3
1.1. Pin Diagram ..................................................................................................................................................... 3
1.2. Marking Diagram.............................................................................................................................................. 4
1.3. Pin Description................................................................................................................................................. 4
2. Electrical Characteristics ......................................................................................................................................... 5
2.1. ESD Notice ...................................................................................................................................................... 5
2.2. Absolute Maximum Ratings ............................................................................................................................. 5
2.3. Operating Range.............................................................................................................................................. 5
2.4. Electrical Specifications 6
2.5. Timing Characteristics ..................................................................................................................................... 7
3. Application Modes ................................................................................................................................................... 8
3.1. Application Mode: Power & Go 9
3.1.1. ‘Power & Go’ Mode: Configuration............................................................................................................ 9
3.1.2. Transmitter Operation in ‘Power & Go’ Mode ........................................................................................... 9
3.2. Application Mode: Advanced ......................................................................................................................... 10
3.2.1. Advanced Mode: Configuration............................................................................................................... 10
3.2.2. Transmitter Operation in Advanced Mode .............................................................................................. 11
4. Configuration Register ........................................................ww.w.Dat.aShee.t.co.k.r ............................................................................... 13
5. Application Information .......................................................................................................................................... 14
5.1. Crystal Specification ...................................................................................................................................... 14
5.2. Reference Design Schematics....................................................................................................................... 14
5.3. Reference Design PCB Layout 15
5.4. Reference Design BOM 16
6. Packaging Information ........................................................................................................................................... 17
6.1. Package Outline Drawing .............................................................................................................................. 17
6.2. Land Pattern .................................................................................................................................................. 17
6.3. Tape & Reel Specification.............................................................................................................................. 18
7. Revision History..................................................................................................................................................... 19
SX1240, Rev 1, Oct 2010
©2010 Semtech Corp.
Page 2
www.semtech.com
Datasheet pdf - http://www.DataSheet4U.net/
|