SX1242ISETRT Semtech

SX1242 ADVANCED COMMUNICATIONS & SENSING DATASHEET SX1242 - Low Cost Integrated Transmitter IC 344.940 MHz RF Transmitter GENERAL DESCRIPTION APPLICATIONS The SX1242 is an ultra-low-cost, fully integrated standalone Low-Cost Consumer Electronic Applications OOK transmitter suitable for operation at 344.940 MHz Remote Keyless Entry (RKE) The SX1242 is designed for use without the requirement for configuration via an MCU. Remote Control / Security Systems The SX1242 offers integrated radio performance with cost Audio Accessories efficiency and is suited for operation in North America (FCC Process and building / home control part 15.231). KEY PRODUCT FEATURES ORDERING INFORMATION +12 dBm Output Power Part Number Temperature Range Qty. per Reel Package 344.940 MHz Operation SX1242ISETRT -40 C to +85 C 2500 SOIC8-EP OOK Bit Rates up to 10 kbps Pre-Configured Modes for Operation without MCU Pb-Free, Halogen Free, RoHS/WEEE compliant product. 1.8 to 3.7 V Supply Range Low BOM Fully Integrated TX GND RFOUT v v v 1 8 VDD DATA M/N CP 2 7 GND TX ENABLE PFD 3 6 VDD XTAL v 45 SX1242, Rev 2, March 2011 Page 1 www.semtech.com 2011 Semtech Corp.SX1242 ADVANCED COMMUNICATIONS & SENSING DATASHEET Table of contents Section 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 3. Circuit Description.................................................................................................................................................... 7 4. Application Information ............................................................................................................................................ 9 4.1. Crystal Specification........................................................................................................................................ 9 4.2. Reference Design Schematic .......................................................................................................................... 9 4.3. Reference Design PCB Layout ......................................................................................................................10 4.4. Reference Design BOM .................................................................................................................................10 5. Packaging Information........................................................................................................................................... 11 5.1. Package Outline Drawing .............................................................................................................................. 11 5.2. Land Pattern .................................................................................................................................................. 11 5.3. Thermal Impedance ....................................................................................................................................... 12 5.4. Tape & Reel Specification.............................................................................................................................. 12 6. Revision History..................................................................................................................................................... 13 SX1242, Rev 2, March 2011 Page 2 www.semtech.com 2011 Semtech Corp.