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AD7091R-5BRUZ-RL7 Scheda tecnica(PDF) 10 Page - Analog Devices |
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AD7091R-5BRUZ-RL7 Scheda tecnica(HTML) 10 Page - Analog Devices |
10 / 34 page AD7091R-5 Data Sheet Rev. 0 | Page 10 of 34 0 –160 –140 –120 –100 –80 –60 –40 –20 FREQUENCY (Hz) 0 10000 8000 6000 4000 2000 VDD = VDRIVE = 3.3V VREF = 2.5V EXTERNAL TA = 25°C fIN = 1kHz fSAMPLE = 22.2kSPS fSCL = 400kHz SNR = 68.3dB SINAD = 68.2dB THD = –85.3dB SFDR = –88.2dB Figure 11. 10 kHz FFT, VDD = 3.0 V, VREF = 2.5 V External 0 –160 –140 –120 –100 –80 –60 –40 –20 FREQUENCY (Hz) 0 10000 8000 6000 4000 2000 VDD = VDRIVE = 3.3V VREF = 2.5V INTERNAL fIN = 1kHz fSAMPLE = 22.2kSPS fSCL = 400kHz SNR = 68.4dB SINAD = 68.2dB THD = –83.3dB SFDR = –87.9dB Figure 12. 10 kHz FFT, VDD = 3.0 V, VREF = 2.5 V Internal 64 65 66 67 68 69 70 1 10 100 INPUT FREQUENCY (kHz) VDD = 3.3V VREF = 2.5V SIGNAL AMPLITUDE = –0.5dB fSCL = 400kHz TA = 25°C SNR SINAD Figure 13. SNR, SINAD vs. Input Frequency 66 REFERENCE INPUT VOLTAGE (V) 1.0 71 70 1.5 65 64 63 62 67 69 2.5 4.0 4.5 5.0 11.7 11.5 11.3 11.1 10.9 10.7 10.5 10.3 10.1 9.9 2.0 3.0 3.5 68 ENOB SINAD SNR VDD = 3.0V VREF = EXTERNAL fSCL = 400kHz fIN = 1kHz SIGNAL AMPLITUDE = –0.5dB TA = 25°C Figure 14. SNR, SINAD, and ENOB vs. Reference Input Voltage –90 –88 –86 –84 –82 –80 –78 –76 –74 –72 –70 1 10 100 ANALOG INPUT FREQUENCY (kHz) VDD = 3.3V VREF = 2.5V SIGNAL AMPLITUDE = –0.5dB fSCL = 400kHz TA = 25°C Figure 15. THD vs. Analog Input Frequency 70.0 69.5 69.0 68.5 68.0 67.5 67.0 66.5 66.0 INPUT LEVEL (dB) VDD = 3.0V VREF = 2.5V fSCL = 400kHz fIN = 1kHz TA = 25°C –10 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 Figure 16. SNR vs. Input Level |
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