AD7651 Analog Devices, AD7651 Datasheet - Page 13

• Manufacturer Part Number: AD7651
• Manufacturer: Analog Devices

Specifications of AD7651

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 100kSPS
• Interface: Par,Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: Uni (Vref),Uni 2.5V
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

Figure 12. SNR and S/(N+D) vs. Input Level (Referred to Full Scale)
–100
–105
–110
–115
–120
–70
–75
–80
–85
–90
–95
89
85
88
87
86
90
88
87
86
85
89
–55
–60
1
Figure 11. THD, Harmonics, and SFDR vs. Frequency
Figure 13. SNR, S/(N+D), and ENOB vs. Temperature
–35
THIRD
HARMONIC
–50
–15
–40
5
10
TEMPERATURE (dB)
FREQUENCY (kHz)
INPUT LEVEL (dB)
THD
25
–30
S/[N+D]
45
SNR
SFDR
65
100
–20
SECOND
HARMONIC
85
S/[N+D]
SNR
–10
105
02964-0-033
02964-0-031
02964-0-032
125
1000
0
15.5
15.0
14.5
14.0
13.5
120
110
100
90
80
70
60
50
40
30
20
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10000
Figure 16. Zero Error, Full Scale with Reference vs. Temperature
0.001
1000
–100
–105
–110
–115
–120
0.01
100
–1
–2
–3
–4
–5
–6
0.1
10
6
5
4
3
2
1
0
1
–55
–55
10
Figure 14. THD and Harmonics vs. Temperature
Figure 15. Operating Current vs. Sample Rate
–35
–35
–15
–15
100
5
5
SAMPLE RATE (SPS)
TEMPERATURE (°C)
TEMPERATURE (°C)
THIRD
HARMONIC
THD
25
25
1000
45
45
PDREF = PDBUF = HIGH
65
65
SECOND
HARMONIC
10000
FULL SCALE
ZERO ERROR
85
85
OVDD
AVDD
AD7651
105
DVDD
105
02964-0-036
02964-0-035
02964-0-034
100000
125
125