SX1240SKA433 Semtech, SX1240SKA433 Datasheet
SX1240SKA433
Specifications of SX1240SKA433
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SX1240SKA433 Summary of contents
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... Qty. per Reel SX1240ISTRT -40 °C to +85 °C 2500 Pb-Free, Halogen Free, RoHS/WEEE compliant product. SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. APPLICATIONS Low-Cost Consumer Electronic Applications Remote Keyless Entry (RKE) Remote Control / Security Systems Audio Accessories Process and building / home control ...
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... 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 SX1240 DATASHEET Page www.semtech.com ...
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... The internal architecture of the SX1240 is shown in Figure 1. The SX1240 comprises a low-consumption PLL and power amplifier. For frequency modulation the modulation is performed digitally within the PLL bandwidth. OOK Modulation is performed via ramping of the PA reference DAC. 1.1. Pin Diagram SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Figure 1. Pinouts, Top View Page 3 SX1240 Integrated Transmitter IC DATASHEET www ...
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... Type 1 GND 2 DATA 3 GND 4 XTAL 5 VDD 6 CTRL 7 GND 8 RFOUT SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Figure 2. Marking Diagram Function in ‘Power & Go’ Mode I I/O Transmit Data I I/O I Power Supply 1.8V to 3.7V I Config Selection I O Transmitter RF Output Page 4 SX1240 Integrated Transmitter IC DATASHEET Function in ‘ ...
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... Functionality outside these limits is not implied. Table 3 Operating Range Symbol VDDop Supply voltage Top Operational temperature range Clop Load capacitance on digital ports SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Description Description Page 5 SX1240 Integrated Transmitter IC DATASHEET Min Max Unit -0.5 3 ...
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... Time from Sleep to Tx mode TOFFT Timer from Tx data activity to Sleep RAMP PA Ramp up and down time SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. = 433.93 MHz, 2-level FSK modulation kHz, bit rate = 10 kbit/s and RF Conditions RF Power o/p = +10 dBm RF Power o dBm Number of programmable values ...
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... CTRL Clock Fall time fall t DATA Setup time setup t DATA hold time hold SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Conditions Time from power on to sampling of CTRL *** Conditions From Data transition to CTRL rising edge From CTRL rising edge to DATA transition Page 7 ...
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... Advanced Mode operation please consult Section 3.2. The diagram below summarises the mode selection process. Table 6 Control Pin Selection of the Application Mode Logic ‘0’ then Clock on CTRL SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Figure 3. SX1240 Mode Selection CTRL Pin (6) Logic ‘1’ or ‘0’ Power & Go Mode (see Section 3.1) Advanced Mode (see Section 3 ...
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... The transition back to sleep mode is managed automatically. In 868 MHz FSK modulation mode, after inactivity on the DATA line, the SX1240 returns to sleep mode 434 MHz, OOK modulation mode, the SX1240 waits for inactivity before returning to sleep mode. SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Configuration OOK 433.92 MHz, 10 dBm FSK 868.3 MHz, Fdev = 20 kHz, 10 dBm ...
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... T42). Read access should be used when developing the device firmware, but is not intended for use in the normal operation mode. - During the register ‘write’ or ‘read’ phases the SX1240 remains in sleep mode. SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. D11 D10 D9 ...
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... Please also note that once in sleep mode, subsequent activity on the DATA pin (without clocking of the CTRL line) will trigger transmission in accordance with Figure 4. Care must hence be taken to avoid inadvertent transmission due to such activity. SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Figure 7. Power-up Timing Page 11 SX1240 ...
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... D12 = ’1' Data TWI Config Ctrl TS_TR RF Out Sleep State Tx Enable Figure 8. Manual Control of Transmitter Enable via the TWI SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Integrated Transmitter IC Tx Data Transmission Page 12 SX1240 DATASHEET D12 = ’0' TWI Config RAMP Sleep Tx Off ...
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... D(7:5) Freq. Devia- 3 tion D4 RF Power Timer 1 D(2:0) Fine Tuning 3 T(42:0) Test 43 SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. State Setting CTRL = ‘0’ 0 Power & Forced Transmit 000 418.00 MHz 001 433.42 MHz 010 433.92 MHz 011 864.00 MHz 100 868 ...
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... VBAT 3 R_VBAT GND XTAL MHDR1X10 26 MHz GND Q2 GND 1 xtal 26 MHz 2 GND Figure 9. Application Module Schematics (See BoM for Optional Components) SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Conditions VCC GND GND L1 U1 SX1240 1 8 GND RFOUT 2 7 DATA GND GND C7 3 ...
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... Reference Design PCB Layout With careful RF design practices, the SX1240 can be designed on a single-layer PCB, optimizing the cost of the application. The single layer design below also features a spiral antenna and optional on-board regulation SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp ...
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... Q2 - 2.5 x 3.2 mm C11 - VBAT - R6 - Table 11 868 MHz Reference Design BoM To be Confirmed SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Value Qty SO8 SX1240 1 RF Transmitter IC 26 MHz 1 Crystal 26 MHz 0402 NC 0 Capacitor NPO (+/-5%) 0402 3 Capacitor NPO (+/-0.25 pF) 0402 S/C 0 0402 8.2 pF ...
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... ADVANCED COMMUNICATIONS & SENSING 6. Packaging Information 6.1. Package Outline Drawing 6.2. Land Pattern SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Figure 11. Package Outline Drawing Figure 12. Land Pattern Page 17 SX1240 Integrated Transmitter IC DATASHEET www.semtech.com ...
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... Carrier Tape Tape Pocket Width Pitch (W) ( 6.5 / 5.4 +/-0.30 +/-0.10 +/-0.30 Note Single Sprocket Holes SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Reel Min. Reel Reel Ko Trailer Size Width Length 2.00 330.2 12.4 400 +/-0.15 Figure 13. Tape & Reel Specification Page 18 ...
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... ADVANCED COMMUNICATIONS & SENSING 7. Revision History Revision History Revision Date 1 October 2010 First FINAL datasheet version SX1240, Rev 1, Oct 2010 ©2010 Semtech Corp. Integrated Transmitter IC Comment Page 19 SX1240 DATASHEET www.semtech.com ...
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... No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent or other industrial or intellectual property rights. Semtech assumes no responsibility or liability whatsoever for any failure or unexpected operation resulting from misuse, neglect improper installation, repair or improper handling or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified maximum ratings or operation outside the specified range ...