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AD7278BRMZ Datasheet(PDF) 14 Page - Analog Devices |
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AD7278BRMZ Datasheet(HTML) 14 Page - Analog Devices |
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14 / 29 page 
AD7276/AD7277/AD7278 Rev. C | Page 13 of 28 TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. FREQUENCY (kHz) 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 –120 –20 –100 –80 –60 –40 1500 16,384 POINT FFT FSAMPLE =3MSPS FIN =1MHz SINAD = 71.2dB THD = –80.9dB SFDR = –82.4dB VDD =3V Figure 10. AD7276 Dynamic Performance at 3 MSPS, Input Tone = 1 MHz FREQUENCY (kHz) 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 –110 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 1500 16,384 POINT FFT FSAMPLE = 3MSPS FIN =1MHz SINAD = 61.6dB THD = –80.2dB SFDR = –83.4dB VDD =3V Figure 11. AD7277 Dynamic Performance at 3 MSPS, Input Tone = 1 MHz INPUT FREQUENCY (kHz) 100 67.5 72.5 1500 1000 72.0 71.5 71.0 70.5 70.0 69.5 69.0 68.5 68.0 VDD = 2.35V VDD =3V VDD =3.6V Figure 12. AD7276 SINAD vs. Analog Input Frequency at 3 MSPS for Various Supply Voltages, SCLK Frequency = 48 MHz INPUT FREQUENCY (kHz) 100 69.0 73.0 1500 1000 VDD = 2.35V 72.5 72.0 71.5 71.0 70.5 70.0 69.5 VDD =3.6V VDD =3V Figure 13. AD7276 SNR vs. Analog Input Frequency at 3 MSPS for Various Supply Voltages, SCLK Frequency = 48 MHz CODE 2046 0 30,000 25,000 20,000 15,000 10,000 5,000 2050 2049 2048 2047 30,000 CODES Figure 14. Histogram of Codes for 30,000 Samples INPUT FREQUENCY (kHz) 100 –90 –72 1500 1000 –74 –76 –78 –80 –82 –84 –86 –88 VDD =3.6V VDD = 2.35V VDD =3V Figure 15. THD vs. Analog Input Frequency at 3 MSPS for Various Supply Voltages, SCLK Frequency = 48 MHz |
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