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AD7689ACPZ Fiches technique(PDF) 11 Page - Analog Devices |
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AD7689ACPZ Fiches technique(HTML) 11 Page - Analog Devices |
11 / 28 page AD7682/AD7689 Rev. 0 | Page 11 of 28 TYPICAL PERFORMANCE CHARACTERISTICS VDD = 2.5 V to 5.5 V, VREF = 2.5 V to 5 V, VIO = 2.3 V to VDD 1.5 1.0 0.5 0 –0.5 –1.5 –1.0 CODES 0 16,384 32,768 49,152 65,536 Figure 6. Integral Nonlinearity vs. Code, VREF = VDD = 5 V 200k 180k 160k 140k 120k 100k 80k 60k 40k 20k 0 7FFA CODE IN HEX 7FFB 7FFC 7FFD 7FFE 7FFF 8000 8001 8002 0 0 487 619 0 0 0 σ = 0.50 VREF = VDD = 5V 135,326 124,689 Figure 7. Histogram of a DC Input at Code Center 0 –20 –40 –60 –80 –100 –120 –140 –160 –180 050 25 75 100 125 FREQUENCY (kHz) VREF = VDD = 5V fS= 250kSPS fIN = 19.9kHz SNR = 92.9dB SINAD = 92.4dB THD = –102dB SFDR = 103dB SECOND HARMONIC = –111dB THIRD HARMONIC = –104dB Figure 8. 20 kHz FFT, VREF = VDD = 5 V 1.5 1.0 0.5 0 –0.5 –1.0 0 16,384 32,768 49,152 65,536 CODES Figure 9. Differential Nonlinearity vs. Code, VREF = VDD = 5 V 160k 140k 120k 100k 80k 60k 40k 20k 0 CODE IN HEX 7FFB 7FFC 7FFD 7FFE 7FFF 8000 8001 8002 8003 178 6649 51,778 4090 60 1 σ = 0.78 VREF = VDD = 2.5V 63,257 135,207 Figure 10. Histogram of a DC Input at Code Center 0 –20 –40 –60 –80 –100 –120 –140 –160 –180 050 25 75 100 FREQUENCY (kHz) VREF = VDD = 2.5V fs= 200kSPS fIN = 19.9kHz SNR = 88.0dB SINAD = 87.0dB THD = –89dB SFDR = 89dB SECOND HARMONIC = –105dB THIRD HARMONIC = –90dB Figure 11. 20 kHz FFT, VREF = VDD = 2.5 V |
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Description similaire - AD7689ACPZ |
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