AD7484 データシートの表示（PDF） - Analog Devices
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AD7484 Datasheet PDF : 20 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
0
fIN = 10.7kHz
SNR = 78.9dB
–20
SNR + D = 78.8dB
THD = –93.9dB
–40
–60
–80
–100
–120
–140
0
200 400 600 800 1000 1200 1400
FREQUENCY (kHz)
Figure 3. 64 k FFT Plot with 10 kHz Input Tone
0 fIN = 1.013MHz
SNR = 77.7dB
–20 SNR + D = 77.6dB
THD = –95.5dB
–40
–60
–80
–100
–120
–140
0
200 400 600 800 1000 1200 1400
FREQUENCY (kHz)
Figure 4. 64 k FFT Plot with 1 MHz Input Tone
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
4096
8192
ADC (Code)
12288
Figure 5. Typical DNL
16384
AD7484
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
80
4096
8192
ADC (Code)
12288
Figure 6. Typical INL
16384
75
70
65
10
100
1000
INPUT FREQUENCY (kHz)
10000
Figure 7. SINAD vs. Input Tone (AD8021 Input Circuit)
–40
200Ω
100Ω
–50
–60
51Ω
–70
10Ω
–80
0Ω
–90
–100
100
1000
INPUT FREQUENCY (kHz)
10000
Figure 8. THD vs. Input Tone for Different Input Resistances
Rev. C | Page 9 of 20
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