AD7951 Analog Devices, AD7951 Datasheet - Page 14

• Manufacturer Part Number: AD7951
• Manufacturer: Analog Devices

Specifications of AD7951

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 1MSPS
• Interface: Byte,Par,Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: Bip 10V,Bip 5.0V,Uni 10V,Uni 5.0V
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

AD7951
Figure 19. Reference Voltage Temperature Coefficient Distribution (247 Devices)
Figure 18. Zero Error, Positive and Negative Full Scale vs. Temperature
–100
–104
–108
–112
–116
–120
–0.5
–1.0
–1.5
–96
1.5
1.0
0.5
60
50
40
30
20
10
–55
0
–55
0
0
0V TO 5V
0V TO 10V
±5V
±10V
–35
–35
ZERO ERROR
POSITIVE FS ERROR
NEGATIVE FS ERROR
1
–15
Figure 17. THD vs. Temperature
–15
2
REFERENCE DRIFT (ppm/°C)
5
5
TEMPERATURE (°C)
TEMPERATURE (°C)
3
25
25
4
45
45
5
65
65
6
85
85
7
105
105
125
125
8
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Figure 21. Typical Reference Voltage Output vs. Temperature (3 Devices)
100000
10000
0.001
5.008
5.006
5.004
5.002
5.000
4.998
4.996
1000
0.01
100
124
122
120
118
116
114
112
110
108
106
0.1
10
1
–55
10
–55
Figure 20. SFDR vs. Temperature (Excludes Harmonics)
OVDD, ALL MODES
AVDD, IMPULSE
AVDD, WARP/NORMAL
DVDD, ALL MODES
Figure 22. Operating Currents vs. Sample Rate
–35
–35
100
–15
–15
SAMPLING RATE (SPS)
5
5
TEMPERATURE (°C)
TEMPERATURE (°C)
1000
25
25
45
45
10000
PDREF = PDBUF = HIGH
65
65
100000
VCC +15V
VEE –15V
ALL MODES
85
85
0V TO 5V
0V TO 10V
±5V
±10V
105
105
1000000
125
125