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SX1211I084TRT Datasheet(PDF) 9 Page - Semtech Corporation |
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SX1211I084TRT Datasheet(HTML) 9 Page - Semtech Corporation |
9 / 73 page SX1211 ADVANCED COMMUNICATIONS & SENSING V3.0 – august 15 th, 2007 Page 9 of 73 www.semtech.com 2.4.2. Frequency Synthesis Table 6: Frequency Synthesizer Specification 2.4.3. Transmitter Table 7: Transmitter Specification Symbol Description Conditions Min Typ Max Unit FR Frequency ranges Programmable but requires a specific BOM. 863 902 950 - - - 870 928 960 MHz MHz MHz BR_F Bit rate (FSK) NRZ 1.56 - 100 kb/s BR_O Bit rate (OOK) NRZ 1.56 - 32 kb/s FDA Frequency deviation (FSK) 33 50 200 kHz XTAL Crystal oscillator frequency 12 12.8 15 MHz FSTEP Frequency synthesizer step Variable, depending on the frequency. - 2 - kHz TS_OSC Oscillator wake-up time From sleep mode. - 1.5 5 ms TS_FS Frequency synthesizer wake-up time From Stby to frequency at most 10 kHz away from the target. - 500 800 µs 200 kHz step at most 10 kHz away from the target - 200 - µs 1MHz step at most 10 kHz away from the target - 220 - µs TS_HOP Frequency synthesizer hop time 10 MHz step at most 10 kHz away from the target - 350 - µs Symbol Description Conditions Min Typ Max Unit Maximum power setting - 12.5 - dBm RFOP RF output power, programmable with 8 steps of typ. 3dB Minimum power setting - -8.5 - PN Phase noise Measured with a 600 kHz offset, at the transmitter output. - -112 - dBc/Hz SPT Transmitted spurious At any offset between 200 kHz and 600 kHz, unmodulated carrier, Fdev = 50 kHz. - - -47 dBc TS_TR Transmitter wake-up time From FS to Tx ready. - 120 500 µs TS_TR2 Transmitter wake-up time From Stby to Tx ready. - 600 900 µs |
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