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AD7656A Datasheet(PDF) 11 Page - Analog Devices |
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AD7656A Datasheet(HTML) 11 Page - Analog Devices |
11 / 29 page AD7656A Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 0 –160 0 FREQUENCY (kHz) 125 –20 –40 –60 –80 –100 –120 –140 25 50 75 100 VDD/VSS = ±15V AVCC/DVCC/VDRIVE = +5V INTERNAL REFERENCE ±10V RANGE TA = 25°C fS = 250kSPS fIN = 50kHz SNR = +87.33dB SINAD = +87.251dB THD = –104.32dB SFDR = –104.13dB Figure 4. FFT for ±10 V Range 0 –160 0 FREQUENCY (kHz) 125 –20 –40 –60 –80 –100 –120 –140 25 50 75 100 VDD/VSS = ±12V AVCC/DVCC/VDRIVE = +5V INTERNAL REFERENCE ±5V RANGE TA = 25°C fS = 250kSPS fIN = 50kHz SNR = +86.252dB SINAD = +86.196dB THD = –105.11dB SFDR = –98.189dB Figure 5. FFT for ±5 V Range 2.0 –2.0 0 10k 20k 30k 40k 50k 60k 65535 CODE 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 AVCC/DVCC/VDRIVE = +5V VDD/VSS = ±12V fSAMPLE = 250kSPS 2 × VREF RANGE INL WCP = 0.64LSB INL WCN = –0.76LSB Figure 6. Typical INL 2.0 –2.0 0 10k 20k 30k 40k 50k 60k 65535 CODE 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 AVCC/DVCC/VDRIVE = +5V VDD/VSS = ±12V fSAMPLE = 250kSPS 2 × VREF RANGE DNL WCP = 0.81LSB DNL WCN = –0.57LSB Figure 7. Typical DNL 90 60 10 1000 ANALOG INPUT FREQUENCY (kHz) 100 85 80 75 70 65 AVCC/DVCC/VDRIVE = +5.25V VDD/VSS = ±16.5V ±10V RANGE AVCC/DVCC/ VDRIVE = +5V VDD/VSS = ±12V ±5V RANGE AVCC/DVCC/ VDRIVE = +5V VDD/VSS = ±5.25V ±5V RANGE AVCC/DVCC/ VDRIVE = +4.75 V VDD/VSS = ±10V ±10V RANGE fSAMPLE = 250kSPS INTERNAL REFERENCE TA = 25°C Figure 8. SINAD vs. Analog Input Frequency –60 –120 10 1000 ANALOG INPUT FREQUENCY (kHz) 100 –70 –80 –90 –100 –110 AVCC/DVCC/ VDRIVE = +5V VDD/VSS = ±12V ±5V RANGE AVCC/DVCC/ VDRIVE = +5.25V VDD/VSS = ±16.5V ±10V RANGE fSAMPLE = 250kSPS INTERNAL REFERENCE TA = 25°C AVCC/DVCC/VDRIVE = +5V VDD/VSS = ±5.25V ±5V RANGE AVCC/DVCC/ VDRIVE = +4.75V VDD/VSS = ±10V ±10V RANGE Figure 9. THD vs. Analog Input Frequency Rev. 0 | Page 10 of 28 |
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