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AD7683ARMZ Fiches technique(PDF) 9 Page - Analog Devices |
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AD7683ARMZ Fiches technique(HTML) 9 Page - Analog Devices |
9 / 16 page AD7683 Rev. A | Page 9 of 16 TYPICAL PERFORMANCE CHARACTERISTICS 3 2 1 0 –1 –2 –3 0 16384 32768 49152 65536 CODE POSITIVE INL = +0.43LSB NEGATIVE INL = –0.97LSB Figure 7. Integral Nonlinearity vs. Code 7000 6000 5000 4000 3000 2000 1000 0 79FD 79FE 79FF 7A007A017A027A037A047A057A06 7A077A08 CODE IN HEX VDD = REF = 2.5V 001 4604 130 00 2755 25440 50 62564 35528 Figure 8. Histogram of a DC Input at the Code Center 0 –180 –160 –140 –120 –100 –80 –60 –40 –20 0 102030 40 FREQUENCY (kHz) 50 16384 POINT FFT VDD = REF = 5V fS = 100kSPS fIN = 20.43kHz SNR = 92.7dB THD = –105.7dB SFDR = –106.4dB Figure 9. FFT Plot 3 2 1 0 –1 –2 –3 0 16384 32768 49152 65536 CODE POSITIVE DNL = +0.43LSB NEGATIVE DNL = –0.41LSB Figure 10. Differential Nonlinearity vs. Code 120000 100000 80000 60000 40000 20000 0 7A0E 7A0F 7A10 7A11 7A12 7A13 7A14 7A15 7A16 CODE IN HEX 00 6 0 0 102287 13619 15152 8 VDD = REF = 5V Figure 11. Histogram of a DC Input at the Code Center 0 –180 –160 –140 –120 –100 –80 –60 –40 –20 0 102030 405 FREQUENCY (kHz) 0 16384 POINT FFT VDD = REF = 2.5V fS = 100kSPS fIN = 20.43kHz SNR = 88.7dB THD = –102.6dB SFDR = –104.6dB Figure 12. FFT Plot |
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