AD7621 datasheet(13/33 Pages) AD

13 / 33 page

AD7621

Rev. 0 | Page 12 of 32

TYPICAL PERFORMANCE CHARACTERISTICS

CODE

16384

32768

49152

–2.0

–1.5

–1.0

–0.5

0.5

1.0

1.5

2.0

65536

Figure 5. Integral Nonlinearity vs. Code

CODE IN HEX

160000

140000

120000

100000

80000

60000

40000

20000

7FFC 7FFD 7FFE

7FFF

8000

8001

8002

8003

8004

σ = 0.69

013

2080

2415

54791

51847

149969

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

at the Code Center (External Reference)

TEMPERATURE (

°C)

2.0480

2.0530

2.0525

2.0520

2.0515

2.0510

2.0505

2.0500

2.0495

2.0490

2.0485

–55

–35

–15

105

125

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

CODE

16384

32768

49152

–1.0

–0.5

0.5

1.5

1.0

65536

Figure 8. Differential Nonlinearity vs. Code

CODE IN HEX

160000

140000

120000

100000

80000

60000

40000

20000

7FFC 7FFD 7FFE

7FFF

8000

8001

8002

8003

8004

σ = 0.82

176

6644

60842

127317

59637

6376

128

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

at the Code Center (Internal Reference)

TEMPERATURE (

°C)

–10

–8

–6

–4

–2

–55

–35

–15

125

105

–FS

ZERO ERROR

+FS

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

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