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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AFE5808A датащи(PDF) 21 Page - Texas Instruments |
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AFE5808A датащи(HTML) 21 Page - Texas Instruments |
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21 / 83 page  0 10 20 30 40 50 60 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 Vcntl (V) LNA 12 dB LNA 18 dB LNA 24 dB 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0.0 0.1 0.2 0.3 0.4 Vcntl (V) LNA 12 dB LNA 18 dB LNA 24 dB −170 −168 −166 −164 −162 −160 −158 −156 −154 −152 −150 −148 −146 −144 100 1000 10000 50000 Phase Noise Frequency Offset (Hz) PN 1 Ch PN 8 Ch −170 −168 −166 −164 −162 −160 −158 −156 −154 −152 −150 −148 −146 −144 100 1000 10000 50000 Eight Channel CW PN Offset frequency (Hz) 16X Clock Mode 8X Clock Mode 4X Clock Mode −170 −168 −166 −164 −162 −160 −158 −156 −154 −152 −150 −148 −146 −144 100 1000 10000 50000 Single Channel CW PN Offset frequency (Hz) 16X Clock Mode 8X Clock Mode 4X Clock Mode −40 −35 −30 −25 −20 −15 −10 −5 0 5 10 100 500 HPF CHARACTERISTICS (LNA+VCA+PGA+ADC) Frequency (KHz) AFE5808A www.ti.com SLOS729D – OCTOBER 2011 – REVISED NOVEMBER 2015 Typical Characteristics (continued) at AVDD_5 V = 5 V, AVDD = 3.3 V, AVDD_ADC = 1.8 V, DVDD = 1.8 V, ac-coupled with 0.1-µF caps at INP and 15-nF caps at INM, No active termination, VCNTL = 0 V, fIN = 5 MHz, LNA = 18 dB, PGA = 24 dB, 14 bit, sample rate = 65 MSPS, LPF filter = 15 MHz, low-noise mode, VOUT = –1 dBFS, 500-Ω CW feedback resistor, CMOS 16X clock, ADC configured in internal-reference mode, single-ended VCNTL mode, VCNTLM = GND, and ambient temperature TA = 25°C (unless otherwise noted) fIN = 2 MHz Figure 14. Full Channel High-Pass Filter Response at Figure 15. CW Phase Noise Default Register Setting fIN = 2 MHz fIN = 2 MHz Figure 16. CW Phase Noise, 1 Channel vs 8 Channel Figure 17. CW Phase Noise vs Clock Modes Figure 18. Input Referred Noise (IRN) and Low-Noise Mode Figure 19. IRN and Low-Noise Mode Enlarged Version Copyright © 2011–2015, Texas Instruments Incorporated Submit Documentation Feedback 21 Product Folder Links: AFE5808A |
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