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MCP3901 датащи(PDF) 10 Page - Microchip Technology |
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MCP3901 датащи(HTML) 10 Page - Microchip Technology |
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10 / 62 page ![]() MCP3901 DS22192D-page 10 © 2011 Microchip Technology Inc. Note: Unless otherwise indicated, AVDD = 5.0V, DVDD = 5.0V; TA = +25°C, MCLK = 4 MHz; PRESCALE = 1; OSR = 64; GAIN = 1; Dithering OFF; VIN = -0.5 dBFS @ 60 Hz. FIGURE 2-7: Spectral Response. FIGURE 2-8: Spectral Response. FIGURE 2-9: Spurious Free Dynamic Range Histogram. FIGURE 2-10: Spurious Free Dynamic Range vs. Oversampling Ratio. FIGURE 2-11: Signal-to-Noise and Distortion and Effective Number of Bits vs. Oversampling Ratio. FIGURE 2-12: Signal-to-Noise and Distortion vs. Gain. -180 -160 -140 -120 -100 -80 -60 -40 -20 0 0 2000 4000 6000 8000 Frequency (Hz) fIN = -0.5dBFS @ 60 Hz fD = 15.6 ksps 16384 Point FFT OSR = 64 Dithering ON -200 -180 -160 -140 -120 -100 -80 -60 -40 -20 0 0 2000 4000 6000 8000 Frequency (Hz) f IN = -60dBFS @ 60 Hz fD = 15.6 ksps 16384 Point FFT OSR = 64 Dithering ON 0 2 4 6 8 1 0 1 2 107 107.5 108 108.5 109 109.5 110 110.5 111 Spurious Free Dynamic Range (dB) fIN = 60 Hz MCLK = 4 MHz OSR = 256 Dithering On 0 10 20 30 40 50 60 70 80 90 100 110 120 32 64 128 256 Oversampling Ratio (OSR) Dithering OFF Dithering ON 50 55 60 65 70 75 80 85 90 95 100 32 64 128 256 Oversampling Ratio (OSR) 8 9 10 11 12 13 14 15 16 Dithering ON Dithering OFF 40 45 50 55 60 65 70 75 80 85 90 95 1 2 4 8 16 32 Gain (V/V) OSR = 256 (Dithering ON) OSR = 32 OSR = 64 OSR = 128 (Dithering ON) |
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