AD7694(Rev0) 데이터 시트보기 (PDF) - Analog Devices
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AD7694 Datasheet PDF : 16 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
4
POSITIVE INL = +0.68 LSB
NEGATIVE INL = –1.14 LSB
3
2
1
0
–1
–2
–3
–4
0
16384
32768
49152
CODE
Figure 5. Integral Nonlinearity vs. Code
65536
AD7694
2.0
POSITIVE DNL = +0.59 LSB
NEGATIVE DNL = –0.56 LSB
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0
16384
32768
CODE
49152
Figure 8. Differential Nonlinearity vs. Code
65536
12000
10000
108568
VDD = REF = 5V
8000
6000
4000
2000
10003
12500
0
0
24E0
0
24E1
1
24E2
24E3 24E4 24E5
CODE IN HEX
0
24E6
0
24E7
0
24E8
Figure 6. Histogram of a DC Input at the Code Center
8000
7000
6000
65487
VDD = REF = 2.5V
5000
4000
3000
28148
32418
2000
1000
2133
0 0 27
2808
50 1 0 0
0
251B 251C 251D 251E 251F 2520 2521 2522 2523 2524 2525 2526
CODE IN HEX
Figure 9. Histogram of a DC Input at the Code Center
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0
16384 POINT FFT
VDD = REF = 5V
fS = 250kSPS
fIN = 20.43kHz
SNR = 92.5dB
THD = –109.9dB
SFDR = –111.0dB
20
40
60
80
100 120
FREQUENCY (kHz)
Figure 7. FFT Plot
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0
16384 POINT FFT
VDD = REF = 2.5V
fS = 150kSPS
fIN = 20.43kHz
SNR = 88.5dB
THD = –102.7dB
SFDR = –105.1dB
10
20
30
40
50
60
70
FREQUENCY (kHz)
Figure 10. FFT Plot
Rev. 0 | Page 9 of 16
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