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AD7923BRUZ Datasheet(PDF) 8 Page - Analog Devices |
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AD7923BRUZ Datasheet(HTML) 8 Page - Analog Devices |
8 / 24 page AD7923 Rev. C | Page 8 of 24 TYPICAL PERFORMANCE CHARACTERISTICS INPUT FREQUENCY (kHz) –50 –90 –85 –80 –75 –70 –65 –60 –55 10 100 fSAMPLE = 200kSPS TA = 25°C RANGE = 0V TO REFIN AVDD = VDRIVE = 5.25V AVDD = VDRIVE = 4.75V AVDD = VDRIVE = 2.7V AVDD = VDRIVE = 3.6V FREQUENCY (kHz) –10 –50 –30 –70 –90 –110 0 10 203040 60 708090 50 100 4096 POINT FFT AVDD = 4.75V fSAMPLE = 200kSPS fIN = 50 kHz SINAD = 70.714dB THD = –82.853dB SFDR = –84.815dB Figure 4. Dynamic Performance at 200 kSPS Figure 7. THD vs. Analog Input Frequency for Various Supply Voltages at 200 kSPS INPUT FREQUENCY (kHz) 75 70 65 60 0 100 fSAMPLE = 200kSPS TA = 25°C RANGE = 0V TO REFIN AVDD = VDRIVE = 5.25V AVDD = VDRIVE = 4.75V AVDD = VDRIVE = 3.6V AVDD = VDRIVE = 2.7V INPUT FREQUENCY (kHz) –55 –95 –90 –85 –80 –75 –70 –65 –60 10 100 fSAMPLE = 200kSPS TA = 25°C AVDD = 5.25V RANGE = 0V TO REFIN RIN = 100Ω RIN = 1000Ω RIN = 10Ω RIN = 50Ω Figure 5. SINAD vs. Analog Input Frequency for Various Supply Voltages at 200 kSPS Figure 8. THD vs. Analog Input Frequency for Various Source Impedances SUPPLY RIPPLE FREQUENCY (kHz) 0 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 20 40 60 80 100 120 140 160 180 200 AVDD = 5V 200mV p-p SINE WAVE ON AVDD REFIN = 2.5V, 1μF CAPACITOR TA = 25°C CODE 1.0 0.6 0.8 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 512 1024 1536 2048 2560 3072 3584 4096 AVDD = VDRIVE = 5V TEMP = 25 °C Figure 9. Typical INL Figure 6. PSRR vs. Supply Ripple Frequency |
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