Datasheet AD9241 (Analog Devices) - 7

AD9241 (AVDD = +5 V, DVDD = +5 V, DRVDD = +5 V, f Typical Differential AC Characterization Curves/Plots SAMPLE = 1.25 MSPS, TA = +25
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C, Differential Input) 80 –40 0 –0.5dBFS FUND –10 75 –20 –50 –30 70 –40 –6.0dBFS –50 –60 65 –60 –70 –20.0dBFS –80 60 –20dBFS –70 –90 2 4 –100 3 6 7 THD – dB 9 SINAD – dB 55 8 5 –80 –6.0dBFS –110 AMPLITUDE – dB –120 50 –130 –90 –140 45 –150 –0.5dBFS –160 40 –100 –170 0.01 0.1 1.0 10.0 0.01 0.1 1.0 10.0 0 100 200 300 400 500 600 INPUT FREQUENCY – MHz INPUT FREQUENCY – MHz FREQUENCY – kHz
Figure 2. SINAD vs. Input Frequency Figure 3. THD vs. Input Frequency Figure 4. Typical FFT, fIN > 500 kHz (Input Span = 5 V, VCM = 2.5 V) (Input Span = 5 V, V (Input Span = 5 V, V CM = 2.5 V) CM = 2.5 V)
80 –40 0 –10 FUND 75 –20 –50 –30 –0.5dBFS 70 –40 –50 –60 65 –60 –70 –6.0dBFS –20.0dBFS 60 –70 –80 2 –90 4 –100 3 7 SINAD – dB 55 THD – dB 5 8 6 9 –110 –20.0dBFS –80 –6.0dBFS AMPLITUDE – dB –120 50 –130 –90 –140 45 –0.5dBFS –150 –160 40 –100 –170 0.01 0.1 1.0 10.0 0.01 0.1 1.0 10.0 0 100 200 300 400 500 600 INPUT FREQUENCY – MHz INPUT FREQUENCY – MHz FREQUENCY – kHz
Figure 5. SINAD vs. Input Frequency Figure 6. THD vs. Input Frequency Figure 7. Typical FFT, fIN > 500 kHz (Input Span = 2 V, V (Input Span = 2 V, V CM = 2.5 V) (Input Span = 2 V, VCM = 2.5 V) CM = 2.5 V)
–40 110 110 105 –50 100 dBFS - 5V 5V SPAN - dBFS 100 90 95 –60 2V SPAN - dBFS dBc - 5V 90 80 –70 85 THD – dB 70 dBFS - 5V 80 –80 5V SPAN - dBc 75 5V SPAN 60 SFDR – dBc AND dBFS 70 2V SPAN - dBc –90 dBc - 2V 50 2V SPAN 65 –100 40 WORST CASE SPURIOUS – dBc AND dBFS 60 0.1 1.0 10.0 –45 –39 –33 –27 –21 –15 –9 –3 0 –40 –35 –30 –25 –20 –15 –10 –5 0 SAMPLE RATE – MSPS AIN – dBFS INPUT POWER LEVEL (f1 = f2) – dBFS
Figure 8. THD vs. Sample Rate Figure 9. Single Tone SFDR Figure 10. Dual Tone SFDR (f (f IN = 0.3 MHz, AIN = –0.5 dBFS, (fIN = 0.6 MHz, VCM = 2.5 V) 1 = 0.5 MHz, f2 = 0.6 MHz, V V CM = 2.5 V) CM = 2.5 V) –6– REV. 0