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MC13851 Scheda tecnica(PDF) 5 Page - Freescale Semiconductor, Inc |
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MC13851 Scheda tecnica(HTML) 5 Page - Freescale Semiconductor, Inc |
5 / 34 page Electrical Specifications MC13851 Advance Information, Rev. 2.0 Freescale Semiconductor 5 Table 5 lists the electrical characteristics measured on evaluation boards tuned for typical application frequencies when Rbias is 1.2 k Ω. Further details on the application circuits are shown in Section 3, “Application Information” Associated Gain at Minimum Noise Figure Gnf dB R1=1.2 k Ω, Freq=1.575 GHz 20.5 22 — R1=1.2 k Ω, Freq=2.14 GHz 17 18.6 — R1=1.5 k Ω, Freq=1.575 GHz 20.5 22 — R1=1.5 k Ω, Freq=2.14 GHz 17.5 19 — Icc and RF Turn On Time Enable trigger total time of 1.8 μsecond from 0 to 2.75 V μs Icc rise time from 0 to 76% of final current level — 6.4 — Icc rise time from 0 to 87% of final current level — 9.6 — RF on time from leading edge of enable trigger to RF turn-on — 1.37 — Note: Maximum Available Gain and Maximum Stable Gain are defined by the K factor as follows: MAG = |S21/S12(K ±sqrt(K2-1)) |, if K>1, MSG = |S21/S12|, if K<1 Table 5. Electrical Characteristics Measured in Frequency Specific Tuned Circuits (Vcc = 2.75V, TA = 25°C, Rbias =1.2kΩ unless otherwise noted) Characteristic Symbol Min Typ Max Unit 1575 MHz (Refer to Figure 7) Frequency f — 1575 — MHz Active RF Gain G 18.4 19.4 — dB Active Noise Figure NF — 1.28 1.6 dB Active Input Third Order Intercept Point IIP3 -6.5 -5 — dBm Active Input 1dB Compression Point P1dBoutput 6.3 7.4 — dBm Active Current @ 2.75V, Rbias=1.2k Ω Icc — 4.8 5.8 mA Active Current @ 2.75V, Rbias=1.5k Ω Icc — 3.8 4.8 mA Active Gain S21 18 19 — dB Bypass RF Gain G -6.5 -5.5 — dB Bypass Noise Figure NF — 6 7 dB Bypass Input Third Order Intercept Point IIP3 24 25.5 — dBm Bypass Current — — 4 20 μA Bypass Gain S21 -7 -5.5 — dB 1960 MHz (Refer to Figure 8) Frequency f — 1960 — MHz Active RF Gain G 17.7 18.7 — dB Active Noise Figure NF — 1.37 1.65 dB Active Input Third Order Intercept Point IIP3 -4 -2.7 — dBm Active Input 1dB Compression Point P1dBoutput 6 8 — dBm Table 4. Electrical Characteristics (Vcc = 2.75 V, Ta = 25°C) Characteristic Symbol Min Typ Max Unit |
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