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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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RF212 bảng dữ liệu(PDF) 5 Page - List of Unclassifed Manufacturers |
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RF212 bảng dữ liệu(HTML) 5 Page - List of Unclassifed Manufacturers |
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5 / 9 page  Image-Reject Front End RF212 100956A Conexant – Preliminary 5 May 18, 2000 Proprietary Information and Specifications are Subject to Change Table 7. RF212 Electrical Specifications (2 of 3) (TA = 25 °°°°C, Vcc = 2.7 V, fIF = 400 MHz, Plo = −−−−10 dBm) Parameter Symbol Test Condition Min Typical Max Units DCS1800 Mode Supply current: Enable mode Sleep mode ENA = 1 ENA = 0 19 30 mA µA RF input frequency 1805 1880 MHz IF frequency 350 400 450 MHz LO to RF input isolation 30 dB Input impedance 50 Ω Power gain (for 2 k Ω differential output impedance): High gain mode Low gain mode 1 Low gain mode 2 Gain step 1 Gain step 2 Temperature coefficient Gain variation versus frequency GMAX1 GMIN1 GMIN2 GSTEP1 GSTEP2 FTC1 GAINSEL = 0 GAINSEL = 1, STEPSEL = 1 GAINSEL = 1, STEPSEL = 0 20 –22 –14 22 2 10 –20 –12 –0.02 25 –18 –10 1.2 dB dB dB dB dB dB/ °C dB Noise figure: High gain Low gain mode 1 Low gain mode 2 GAINSEL = 0 GAINSEL = 1, STEPSEL = 1 GAINSEL = 1, STEPSEL = 0 3.5 16.5 11 4.5 dB dB dB Noise figure degradation with blocker: High gain −22 dBm blocker, GAINSEL = 0 (Note 2) 1.6 dB Input 1 dB compression point IP1DB high gain mode low gain mode −23 −20 –20 –16 dBm dBm Input third order intercept point IP3 −12 dBm Differential IF shunt output resistance 2 k Ω Image rejection: fIF = 400 MHz fIF = 350 or 450 MHz 35 25 40 dB dB PCS1900 Mode (for tri-band device only) Supply current: Enable mode Sleep mode ENA = 1 ENA = 0 19 30 mA µA RF input frequency 1930 1990 MHz IF frequency 350 400 450 MHz LO to RF input isolation 30 dB Input impedance 50 Ω Power gain (for 2 k Ω differential output impedance): High gain mode Low gain mode 1 Low gain mode 2 Gain step 1 Gain step 2 Temperature coefficient Gain variation versus frequency GMAX1 GMIN1 GMIN2 GSTEP1 GSTEP2 FTC1 GAINSEL = 0 GAINSEL = 1, STEPSEL = 1 GAINSEL = 1, STEPSEL = 0 20 –22 –14 22 2 10 –20 –12 –0.02 25 –18 –10 1.2 dB dB dB dB dB dB/ °C dB Noise figure: High gain Low gain mode 1 Low gain mode 2 GAINSEL = 0 GAINSEL = 1, STEPSEL = 1 GAINSEL = 1, STEPSEL = 0 3.5 16.5 11 4.5 dB dB dB Noise figure degradation with blocker: High gain −22 dBm blocker, GAINSEL = 0 (Note 3) 1.6 dB |
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