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AD7674 Datasheet(PDF) 9 Page - Analog Devices

Part No. AD7674
Description  16-Bit, 250 kSPS CMOS ADC
Download  24 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD7674 Datasheet(HTML) 9 Page - Analog Devices

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REV. B
AD7663
–9–
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
0
16384
32768
49152
65536
CODE
TPC 1. Integral Nonlinearity vs. Code
50
45
40
35
30
25
20
15
10
5
0
0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.1
2.7
POSITIVE INL – LSB
TPC 2. Typical Positive INL Distribution (446 Units)
80
70
60
50
40
30
20
10
0
–3
–2.7
–2.4
–2.1
–1.8 –1.5
–1.2
–0.9
–0.6 –0.3
NEGATIVE INL – LSB
TPC 3. Typical Negative INL Distribution (446 Units)
Typical Performance Characteristics–
00
33
1800
6802 6745
1000
40
0
8000
7000
6000
5000
4000
3000
2000
1000
0
7FFD 7FFE 7FFF 8000 8001 8002 8003 8004 8004 8005
CODE IN HEXA
TPC 4. Histogram of 16,384 Conversions of a DC Input
at the Code Transition
00
2
233
3944
8032
3902
271
00
0
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
7FFC 7FFD 7FFE 7FFF 8000 8001 8002 8003 8004 8005 8006
CODE IN HEXA
TPC 5. Histogram of 16,384 Conversions of a DC Input
at the Code Center
–0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0
25
50
75
100
125
FREQUENCY – kHz
4096 POINT FFT
FS = 250kHz
fIN = 45kHz, –0.5dB
SNR = 90.1dB
SINAD = 89.8dB
THD = –100.5dB
SFDR = 102.7dB
TPC 6. FFT Plot


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