Datasheet AD9240 (Analog Devices) - 7

AD9240 (AVDD = +5 V, DVDD = +5 V, DRVDD = +5 V, f Typical Differential AC Characterization Curves/Plots SAMPLE = 10 MSPS, RBIAS = 2 k
⍀
, TA = +25
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C, Differential Input) 90 –40 0 1st –10 85 –50 –20 80 –0.5dBFS –30 –60 –40 75 –6.0dBFS –20.0dBFS –50 70 –70 –60 SINAD – dB THD – dB –70 65 –6.0dBFS –20.0dBFS 2nd 3rd –80 AMPLITUDE – dB –80 5th 60 –90 9th 4th 8th –90 –0.5dBFS –100 7th 6th 55 –110 50 –100 –120 0.1 1 10 20 0.1 1 10 20 0 FREQUENCY – MHz 5.0 INPUT FREQUENCY – MHz INPUT FREQUENCY – MHz
Figure 2. SINAD vs. Input Frequency Figure 3. THD vs. Input Frequency Figure 4. Typical FFT, fIN = 1.0 MHz (Input Span = 5 V, VCM = 2.5 V) (Input Span = 5 V, VCM = 2.5 V) (Input Span = 5 V, VCM = 2.5 V)
90 –40 0 1 85 –15 –50 –30 80 –45 –60 75 –0.5dBFS –60 –20.0dBFS 70 –6.0dBFS –70 –75 2 3 4 5 SINAD – dB 65 THD – dB –90 6 7 8 9 –80 –6.0dBFS AMPLITUDE – dB –105 60 –20.0dBFS –90 –120 55 –0.5dBFS –135 50 –100 –150 0.1 1 10 20 0.1 1 10 20 0 5.0 INPUT FREQUENCY – MHz FREQUENCY – MHz INPUT FREQUENCY – MHz
Figure 5. SINAD vs. Input Frequency Figure 6. THD vs. Input Frequency Figure 7. Typical FFT, fIN = 5.0 MHz (Input Span = 2 V, VCM = 2.5 V) (Input Span = 2 V, VCM = 2.5 V) (Input Span = 2 V, VCM = 2.5 V)
–60 110 110 5V SPAN – dBFS 105 –65 100 5V SPAN – dBFS 100 90 –70 5V SPAN 2V SPAN – dBFS 95 80 2V SPAN – dBFS –75 90 70 5V SPAN – dBc –80 2V SPAN 85 60 THD – dB 80 –85 2V SPAN – dBc 50 5V SPAN – dBc SFDR – dBc AND dBFS 75 –90 40 70 2V SPAN – dBc –95 30 65 WORST CASE SPURIOUS – dBc AND dBFS –100 20 60 0.1 1 10 –60 –50 –40 –30 –20 –10 0 –40 –35 –30 –25 –20 –15 –10 –5 0 SAMPLE RATE – MHz AIN – dB INPUT POWER LEVEL (f1
=
f2) – dBFS
Figure 8. THD vs. Sample Rate Figure 9. Single Tone SFDR Figure 10. Dual Tone SFDR (fIN = 5.0 MHz, AIN = –0.5 dBFS, (fIN = 5.0 MHz, VCM = 2.5 V) (f1 = 0.95 MHz, f2 = 1.04 MHz, VCM = 2.5 V) VCM = 2.5 V) –6– REV. B