AD7623AST datasheet(13/29 Pages) AD

13 / 29 page

AD7623

Rev. 0 | Page 12 of 28

TYPICAL PERFORMANCE CHARACTERISTICS

2.0

–2.0

65536

CODE

1.5

1.0

0.5

–0.5

–1.0

–1.5

16384

32768

49152

Figure 5. Integral Nonlinearity vs. Code

160k

7FFC

8004

CODE IN HEX

011

2406

2258

50472

58814

140k

120k

100k

80k

60k

40k

20k

7FFD 7FFE

7FFF

8000

8001

8002

8003

σ = 0.70

147157

Figure 6. Histogram of 261,120 Conversions of a DC Input

at the Code Center (External 2.5V Reference)

2.0530

2.0480

–55

125

TEMPERATURE (°C)

2.0525

2.0520

2.0515

2.0510

2.0505

2.0500

2.0495

2.0490

2.0485

–35

–15

105

Figure 7. Typical Reference Voltage Output vs. Temperature (3 Units)

1.5

–1.0

65536

CODE

1.0

0.5

–0.5

16384

32768

49152

Figure 8. Differential Nonlinearity vs. Code

160k

7FFC

8004

CODE IN HEX

140k

120k

100k

80k

60k

40k

20k

7FFD 7FFE

7FFF

8000

8001

8002

8003

σ = 0.82

119

5928

59008

62565

7217

168

126114

Figure 9. Histogram of 261,120 Conversions of a DC Input

at the Code Center (Internal Reference)

–10

–55

125

TEMPERATURE (°C)

–2

–4

–6

–8

–35

–15

105

+FS

–FS

ZERO

ERROR

Figure 10. Zero Error, Positive and Negative Full Scale vs. Temperature

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