AD7951 Analog Devices, AD7951 Datasheet - Page 12

• 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
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = DVDD = 5 V; OVDD = 5 V; VCC = 15 V; VEE = −15 V; V
300000
250000
200000
150000
100000
–0.5
–1.0
50000
1.0
0.5
250
200
150
100
0
50
Figure 7. Histogram of 261,120 Conversions of a DC Input
0
Figure 6. Integral Nonlinearity Distribution (239 Devices)
0
–1.0
0
–0.8
1FFF
0
Figure 5. Integral Nonlinearity vs. Code
–0.6
4096
–0.4
2000
INL DISTRIBUTION (LSB)
0
at the Code Center
–0.2
CODE IN HEX
CODE
8192
261120
2001
0
0.2
NEGATIVE INL = –0.15
POSITIVE INL = +0.15
0.4
2002
12288
0
NEGATIVE INL
POSITIVE INL
0.6
0.8
2003
0
16384
1.0
Rev. 0 | Page 12 of 32
REF
= 5 V; T
A
= 25°C.
140000
120000
100000
–0.5
–1.0
80000
60000
40000
20000
1.0
0.5
200
180
160
140
120
100
Figure 9. Differential Nonlinearity Distribution (239 Devices)
0
80
60
40
20
Figure 10. Histogram of 261,120 Conversions of a DC Input
0
0
–1.0
0
–0.8
8192
Figure 8. Differential Nonlinearity vs. Code
0
–0.6
4096
8193
0
–0.4
at the Code Transition
DNL DISTRIBUTION (LSB)
–0.2
132052
8194
CODE IN HEX
CODE
8192
0
129068
8195
0.2
NEGATIVE DNL = –0.27
POSITIVE DNL = +0.27
0.4
12288
NEGATIVE DNL
POSITIVE DNL
8196
0
0.6
0.8
8197
0
16384
1.0