AD7622 Analog Devices, AD7622 Datasheet - Page 12

• Manufacturer Part Number: AD7622
• Manufacturer: Analog Devices

Specifications of AD7622

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

AD7622
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 8. Typical Reference Voltage Output vs. Temperature (2 Units)
250000
200000
150000
100000
2.0486
2.0484
2.0482
2.0480
2.0478
2.0476
2.0474
2.0472
2.0470
–0.50
–1.00
–1.50
50000
1.50
1.00
0.50
Figure 7. Histogram of 261,120 Conversions of a DC Input at
0
0
–55
0
7FF8 7FF9 7FFA 7FFB 7FFC 7FFD 7FFE 7FFF
0
–35
Figure 6. Integral Nonlinearity vs. Code
the Code Center (External Reference)
0
–15
16384
44
5
TEMPERATURE (°C)
27695
CODES IN HEX
25
32768
CODE
196433
45
POSITIVE INL = +0.43 LSB
NEGATIVE INL = –0.49 LSB
36872
65
49152
76
V
85
REF
σ = 0.5
0
= 2.5V
105
8000
0
65536
125
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200000
160000
120000
80000
40000
–0.25
–0.50
–0.75
–1.00
Figure 10. Histogram of 261,120 Conversions of a DC Input at
1.25
1.00
0.75
0.50
0.25
–1
–2
–3
–4
0
0
4
3
2
1
0
–55
0
7FF8 7FF9 7FFA 7FFB 7FFC 7FFD 7FFE 7FFF
Figure 11. Zero Error, Gain Error vs. Temperature
0
Figure 9. Differential Nonlinearity vs. Code
–35
the Code Center (Internal Reference)
0
–15
16384
784
5
TEMPERATURE (°C)
50640
CODES IN HEX
25
171449
32768
CODE
45
37789
65
457
49152
GAIN ERROR
ZERO ERROR
V
REF
85
= 2.048V
1
σ = 0.5
105
8000
0
65536
125