Datasheet

AD7482
Rev. B | Page 9 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
FREQUENCY (kHz)
0
0 200 400 600 800 1400
(dB)
–20
–40
–80
–100
–120
–60
1000 1200
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f
IN
= 10.7kHz
SNR = 72.97dB
SNR + D = 72.94dB
THD = –91.5dB
Figure 3. 64k FFT Plot With 10 kHz Input Tone
FREQUENCY (kHz)
0
0 200 400 600 800 1400
(dB)
–20
–40
–80
–100
–120
–60
1000 1200
f
IN
= 1.013MHz
SNR = 72.58dB
SNR + D = 72.57dB
THD = –94.0dB
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Figure 4. 64k FFT Plot With 1 MHz Input Tone
ADC (Code)
0.5
0 1024 2048 4096
DNL (LSB)
0.4
0.1
–0.3
–0.4
–0.5
–0.2
3072
0.3
0
0.2
–0.1
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Figure 5. Typical DNL
ADC (Code)
0.5
0 1024 2048 4096
INL (LSB)
0.4
0.1
–0.3
–0.4
–0.5
–0.2
3072
0.3
0
0.2
–0.1
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Figure 6. Typical INL
INPUT FREQUENCY (kHz)
80
65
10 10000100
SINAD (dB)
1000
70
75
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Figure 7. SINAD vs. Input Tone (AD8021 Input Circuit)
INPUT FREQUENCY (kHz)
–40
100 1000
THD (dB)
–70
–90
–100
–60
10000
–50
–80
100Ω
10Ω
0Ω
51Ω
200Ω
02638-008
Figure 8. THD vs. Input Tone for Different Input Resistances