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SI4455-C2A-GMR Datasheet(PDF) 7 Page - Silicon Laboratories |
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SI4455-C2A-GMR Datasheet(HTML) 7 Page - Silicon Laboratories |
7 / 39 page Si4x55-C Rev 1.0 7 Table 4. Transmitter AC Electrical Characteristics1 Parameter Symbol Test Condition Min Typ Max Unit TX Frequency Range FTX 284 — 350 MHz 350 — 525 MHz 850 — 960 MHz (G)FSK Data Rate DRFSK2 1.0 — 500 kbps OOK Data Rate DROOK 0.5 — 120 kbps Modulation Deviation Range f960 850–960 MHz — — 500 kHz f525 350–525 MHz — — 500 kHz f350 284–350 MHz — — 500 kHz Modulation Deviation Resolution FRES-960 850–1050 MHz —114.4 — Hz FRES-525 420–525 MHz —57.2 — Hz FRES-420 350–420 MHz —45.6 — Hz FRES-350 284–350 MHz —38.1 — Hz Output Power Range3 PTX Measured at 434 MHz, 3.3 V, Class E match –20 — +13 dBm TX RF Output Steps3 PRF_OUT Using switched current match within 6 dB of max power —0.25 — dB TX RF Output Level3 Variation vs. Temperature PRF_TEMP –40 to +85 C— 2.3 — dB TX RF Output Level Variation vs. Frequency3 PRF_FREQ Measured across 902–928 MHz — 0.6 — dB Transmit Modulation Filtering B*T Gaussian Filtering Bandwith Time Product —0.5 — Notes: 1. All minimum and maximum values are guaranteed across the recommended operating conditions of supply voltage and from –40 to +85 °C unless otherwise stated. All typical values apply at VDD = 3.3 V and 25 °C unless otherwise stated. 2. The maximum data rate is dependent on the XTAL frequency and is calculated as per the formula: Maximum Symbol Rate = Fxtal/60, where Fxtal is the XTAL frequency (typically 30 MHz). 3. Conducted measurements based on RF evaluation board. Output power and emissions specifications are dependent on transmit frequency, matching components, and board layout. |
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