AD7623 Analog Devices, AD7623 Datasheet - Page 12

• Manufacturer Part Number: AD7623
• Manufacturer: Analog Devices

Specifications of AD7623

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 1.33MSPS
• Interface: Byte,Par,Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

AD7623
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 7. Typical Reference Voltage Output vs. Temperature (3 Units)
2.0530
2.0525
2.0520
2.0515
2.0510
2.0505
2.0500
2.0495
2.0490
2.0485
2.0480
160k
140k
120k
100k
–0.5
–1.0
–1.5
–2.0
80k
60k
40k
20k
2.0
1.5
1.0
0.5
Figure 6. Histogram of 261,120 Conversions of a DC Input
0
0
0
–55
7FFC
0
at the Code Center (External 2.5V Reference)
–35
Figure 5. Integral Nonlinearity vs. Code
7FFD 7FFE 7FFF
11
16384
–15
2406
58814
5
TEMPERATURE (°C)
CODE IN HEX
147157
25
CODE
32768
8000
45
50472
8001
65
2258
8002
49152
85
8003
2
σ
105
= 0.70
8004
0
65536
125
Rev. 0 | Page 12 of 28
Figure 10. Zero Error, Positive and Negative Full Scale vs. Temperature
160k
140k
120k
100k
–0.5
–1.0
80k
60k
40k
20k
–10
1.5
1.0
0.5
10
–2
–4
–6
–8
Figure 9. Histogram of 261,120 Conversions of a DC Input
0
0
8
6
4
2
0
–55
0
7FFC
0
ZERO
ERROR
–35
Figure 8. Differential Nonlinearity vs. Code
at the Code Center (Internal Reference)
7FFD 7FFE 7FFF
–FS
119
+FS
–15
16384
5928
5
TEMPERATURE (°C)
59008
CODE IN HEX
25
126114
CODE
32768
8000
45
62565
8001
65
7217
8002
49152
85
8003
168
σ
105
= 0.82
8004
1
65536
125