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AD7321 Datasheet(PDF) 11 Page - Analog Devices |
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AD7321 Datasheet(HTML) 11 Page - Analog Devices |
11 / 36 page AD7321 Rev. 0 | Page 11 of 36 –50 –100 10 1000 ANALOG INPUT FREQUENCY (kHz) 100 –55 –60 –65 –70 –75 –80 –85 –90 –95 0V TO +10V SE 0V TO +10V DIFF ±10V DIFF ±10V SE ±2.5V SE ±2.5V DIFF ±5V DIFF ±5V SE VCC =VDRIVE =3V VDD/VSS =±12V TA = 25°C fS = 500kSPS INTERNAL REFERENCE 80 50 10 1000 ANALOG INPUT FREQUENCY (kHz) 100 75 70 65 60 55 VCC =VDRIVE =5V VDD/VSS = ±12V TA =25°C fS = 500kSPS INTERNAL REFERENCE ±10V SE 0V TO +10V SE ±10V DIFF ±2.5V SE ±5V SE ±2.5V DIFF ±5V DIFF 0V TO +10V DIFF Figure 10. THD vs. Analog Input Frequency for Single-Ended (SE) and True Differential Mode (Diff) at 3 V VCC Figure 13. SINAD vs. Analog Input Frequency for Single-Ended (SE) and True Differential Mode (Diff) at 5 V VCC –50 –95 0 600 FREQUENCY OF INPUT NOISE (kHz) –55 –60 –65 –70 –75 –80 –85 –90 100 200 300 400 500 VDD/VSS =±12V SINGLE-ENDED MODE fS = 500kSPS TA =25°C 50kHz ON SELECTED CHANNEL VCC =3V VCC =5V –50 –100 10 1000 ANALOG INPUT FREQUENCY (kHz) 100 –55 –60 –65 –70 –75 –80 –85 –90 –95 VCC =VDRIVE =5V VDD/VSS = ±12V TA =25°C fS = 500kSPS INTERNAL REFERENCE 0V TO +10V SE ±10V SE ±10V DIFF 0V TO +10V DIFF ±5V SE ±5V DIFF ±2.5V SE ±2.5V DIFF Figure 14. Channel-to-Channel Isolation Figure 11. THD vs. Analog Input Frequency for Single-Ended (SE) and True Differential Mode (Diff) at 5 V VCC 10k 0 –2 CODE 9k 8k 7k 6k 5k 4k 3k 2k 1k –1 0 1 2 0 228 9469 303 0 VCC =5V VDD/VSS =±12V RANGE = ±10V 10k SAMPLES TA =25°C 80 50 10 1000 ANALOG INPUT FREQUENCY (kHz) 100 75 70 65 60 55 VCC =VDRIVE =3V VDD/VSS = ±12V TA =25°C fS = 500kSPS INTERNAL REFERENCE ±5V DIFF ±2.5V DIFF ±5V SE ±2.5V SE 0V TO +10V DIFF ±10V DIFF ±10V SE 0V TO +10V SE Figure 15. Histogram of Codes, True Differential Mode Figure 12. SINAD vs. Analog Input Frequency for Single-Ended (SE) and True Differential Mode (Diff) at 3 V VCC |
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