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SLWRB4253A Datasheet(PDF) 56 Page - Silicon Laboratories |
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SLWRB4253A Datasheet(HTML) 56 Page - Silicon Laboratories |
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56 / 183 page  4.1.10.4 Sub-GHz RF Receiver Characteristics for 868 MHz Band Unless otherwise indicated, typical conditions are: T = 25 °C, VREGVDD = AVDD = IOVDD = 3.3 V, DVDD = RFVDD = PAVDD. RFVDD and PAVDD path is filtered using ferrites. Crystal frequency=38.4 MHz. RF center frequency 868 MHz. Table 4.23. Sub-GHz RF Receiver Characteristics for 868 MHz Band Parameter Symbol Test Condition Min Typ Max Unit Tuning frequency range FRANGE 863 — 876 MHz Max usable input level, 0.1% BER SAT2k4 Desired is reference 2.4 kbps GFSK signal1 — 10 — dBm Max usable input level, 0.1% BER SAT38k4 Desired is reference 38.4 kbps GFSK signal2 — 10 — dBm Sensitivity SENS Desired is reference 2.4 kbps GFSK signal1, 0.1% BER — -120.6 — dBm Desired is reference 38.4 kbps GFSK signal2, 0.1% BER — -109.5 -105.4 dBm Desired is reference 500 kbps GFSK signal3, 0.1% BER — -96.4 — dBm Desired is reference BPSK sig- nal4, 1% PER — -110.6 — dBm Level above which RFSENSE will trigger5 RFSENSETRIG CW at 868 MHz — -28.1 — dBm Level below which RFSENSE will not trigger5 RFSENSETHRES CW at 868 MHz — -50 — dBm Adjacent channel selectivity, Interferer is CW at ± 1 × channel-spacing C/I1 Desired is 2.4 kbps GFSK signal1 at 3dB above sensitivity level, 0.1% BER 44.5 56.9 — dB Desired is 38.4kbps GFSK signal2 at 3dB above sensitivity level, 0.1% BER 35.4 43 — dB Alternate channel selectivity, Interferer is CW at ± 2 × channel-spacing C/I2 Desired is 2.4kbps GFSK signal1 at 3dB above sensitivity level, 0.1% BER — 56.8 — dB Desired is 38.4kbps GFSK signal2 at 3dB above sensitivity level, 0.1% BER — 48.2 — dB Image rejection, Interferer is CW at image frequency C/IIMAGE Desired is 2.4kbps GFSK signal1 at 3dB above sensitivity level, 0.1% BER — 50.2 — dB Desired is 38.4kbps GFSK signal2 at 3dB above sensitivity level, 0.1% BER — 48.7 — dB Blocking selectivity, 0.1% BER. Desired is 2.4 kbps GFSK signal1 at 3 dB above sensitivity level C/IBLOCKER Interferer CW at Desired ± 1 MHz — 72.1 — dB Interferer CW at Desired ± 2 MHz — 77.5 — dB Interferer CW at Desired ± 10 MHz — 90.4 — dB EFR32FG12 Flex Gecko Proprietary Protocol SoC Family Data Sheet Electrical Specifications silabs.com | Building a more connected world. Rev. 1.0 | 51 |
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