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MC13852 bảng dữ liệu(PDF) 4 Page - Freescale Semiconductor, Inc |
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MC13852 bảng dữ liệu(HTML) 4 Page - Freescale Semiconductor, Inc |
4 / 30 page Electrical Specifications MC13852 Advance Information, Rev. 2.0 4 Freescale Semiconductor Table 3 shows the use of the Gain, Enable and Band pins (along with the Vcc and RF out pins), to select Active mode (High Gain), Bypass mode (Low Gain), or Standby mode (Disable) operation. Table 4 lists electrical characteristics associated with noise performance measured in a 50 Ω system. Additional noise parameters are listed in Table 14 and Table 15. Also listed are the typical Icc and RF turn-on times for the device. Table 5 lists the electrical characteristics measured on evaluation boards that are tuned for typical application frequencies. Further details on the application circuits are shown in Section 4; details on the boards are shown in Section 5. Table 3. Truth Table Pin Function Pin Name Enable Disable Low Gain High Gain Low Gain High Gain Logic Circuit Bias Vcc Vcc 1 1 1 1 Toggles Gain Mode (Active or Bypass) Gain 0 1 0 1 Toggles LNA On/Off Enable 1 1 0 0 Selects the LNA Band 1 1 1 1 NOTES: 1. Logic state "1" equals Vcc voltage. Logic state of "0" equals ground potential. 2. Vcc is inductively coupled to LNA Out pin and Vcc pin. 3. Minimum logic state "1" for enable and gain pins is 1.25V. 4. Maximum logic state "0" for enable and gain pins is 0.8V. Table 4. Electrical Characteristics (Vcc = 2.75 V, Ta = 25 °C) Characteristic Symbol Min Typ Max Unit Insertion Gain R1=1.2 k Ω, Freq=434 MHz R1=1.2 k Ω, Freq=900 MHz |S21|2 20.4 16.4 21.9 18.3 —dB Maximum Stable Gain and/or Maximum Available Gain [Note1] R1=1.2 k Ω, Freq=434 MHz R1=1.2 k Ω, Freq=900 MHz MSG, MAG 26.7 22 28.2 23.5 —dB Minimum Noise Figure R1=1.2 k Ω, Freq=434 MHz R1=1.2 k Ω, Freq=900 MHz NFmin — 0.92 0.84 1.2 1.1 dB Associated Gain at Minimum Noise Figure R1=1.2 k Ω, Freq=434 MHz R1=1.2 k Ω, Freq=900 MHz Gnf 27.6 21 29.6 23 —dB Icc and RF Turn On Time Enable trigger total time of 1.8 usec from 0 to 2.75 V Icc rise time from 0 to 76% of final current level Icc rise time from 0 to 87% of final current level RF on time from leading edge of enable trigger to RF turn-on —— 6.4 9.6 1.37 — usec NOTES: 1. 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 |
Số phần tương tự - MC13852 |
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Mô tả tương tự - MC13852 |
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