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SLWRB4253A Datasheet(PDF) 67 Page - Silicon Laboratories |
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SLWRB4253A Datasheet(HTML) 67 Page - Silicon Laboratories |
67 / 183 page 4.1.10.10 Sub-GHz RF Receiver Characteristics for 315 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 315 MHz. Table 4.29. Sub-GHz RF Receiver Characteristics for 315 MHz Band Parameter Symbol Test Condition Min Typ Max Unit Tuning frequency range FRANGE 195 — 358 dBm 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 — -123.2 -120.7 dBm Desired is reference 38.4 kbps GFSK signal2, 0.1% BER — -111.4 -108.6 dBm Desired is reference 500 kbps GFSK signal3, 0.1% BER — -98.8 -95.5 dBm Level above which RFSENSE will trigger4 RFSENSETRIG CW at 315 MHz — -28.1 — dBm Level below which RFSENSE will not trigger4 RFSENSETHRES CW at 315 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 54.1 63.6 — dB Desired is 38.4kbps GFSK signal2 at 3dB above sensitivity level, 0.1% BER — 49.9 — 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 — 64.2 — dB Desired is 38.4kbps GFSK signal2 at 3dB above sensitivity level2, 0.1% BER — 56.2 — 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 — 53 — dB Desired is 38.4kbps GFSK signal2 at 3dB above sensitivity level, 0.1% BER — 51.4 — 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 — 75 — dB Interferer CW at Desired ± 2 MHz — 76.5 — dB Interferer CW at Desired ± 10 MHz 72.6 91.9 — dB Upper limit of input power range over which RSSI reso- lution is maintained RSSIMAX — — 5 dBm EFR32FG12 Flex Gecko Proprietary Protocol SoC Family Data Sheet Electrical Specifications silabs.com | Building a more connected world. Rev. 1.0 | 62 |
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