Datasheet

AD7484
Rev. C | Page 9 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
FREQUENCY (kHz)
0
0 200 400 600 800 1400
(dB)
–20
–40
–80
–100
–140
–60
1000 1200
f
IN
= 10.7kHz
SNR = 78.9dB
SNR + D = 78.8dB
THD = –93.9dB
–120
02642-003
Figure 3. 64 k FFT Plot with 10 kHz Input Tone
FREQUENCY (kHz)
0
0 200 400 600 800 1400
(dB)
–20
–40
–80
–100
–140
–60
1000 1200
f
IN
= 1.013MHz
SNR = 77.7dB
SNR + D = 77.6dB
THD = –95.5dB
–120
02642-004
Figure 4. 64 k FFT Plot with 1 MHz Input Tone
ADC (Code)
1.0
0 4096 8192 16384
DNL (LSB)
0.8
0.2
–0.6
–0.8
–1.0
–0.4
12288
0.6
0
0.4
–0.2
02642-005
Figure 5. Typical DNL
ADC (Code)
1.0
0 4096 8192 16384
INL (LSB)
0.8
0.2
–0.6
–0.8
–1.0
–0.4
12288
0.6
0
0.4
–0.2
02642-006
Figure 6. Typical INL
INPUT FREQUENCY (kHz)
80
65
10 10000100
SINAD (dB)
1000
70
75
02642-007
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
02642-008
Figure 8. THD vs. Input Tone for Different Input Resistances