AD7902BRQZ-RL7 datasheet(10/29 Pages) AD

部件名	AD7902BRQZ-RL7

功能描述	Dual Pseudo Differential 16-Bit, 1 MSPS PulSAR ADC 12.0 mW in QSOP

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制造商	AD [Analog Devices]

网页	http://www.analog.com

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10 / 29 page

Data Sheet

AD7902

Rev. B | Page 9 of 28

Figure 11. Histogram of a DC Input at the Code Center, VREF = 5 V

Figure 12. Histogram of a DC Input at the Code Transition, VREF = 5 V

Figure 13. SNR, SINAD, and ENOB vs. Reference Voltage

Figure 14. Histogram of a DC Input at the Code Center, VREF = 2.5 V

Figure 15. SNR vs. Input Level

Figure 16. THD and SFDR vs. Reference Voltage

50000

45000

40000

35000

30000

25000

20000

15000

10000

5000

0

CODES IN HEX

FA6C FA6D FA6E FA6F FA70 FA71 FA72 FA73 FA74 FA75 FA76

210

12406

41352

11317

249

50000

45000

40000

35000

30000

25000

20000

15000

10000

5000

0

CODES IN HEX

F87C F87D F87E F87F F880 F881 F882 F883 F884 F885

19

3393

31890

28056

2177

100

98

96

94

92

90

88

86

84

82

80

16.0

12.0

12.5

13.0

13.5

14.0

14.5

15.0

15.5

2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25

REFERENCE VOLTAGE (V)

SNR

SINAD

ENOB

50000

45000

40000

35000

30000

25000

20000

15000

10000

5000

0

CODES IN HEX

135

38

4

3524

2991

521

33

46115

12174

FABA FABB FABC FABD FABE FABF FAC0 FAC1 FAC2 FAC3 FAC4 FAC5 FAC6

94

93

92

91

90

89

88

–10

–9

–8

–7

–6

–5

–4

–3

–2

–1

–0.1

INPUT LEVEL (dB)

–95

–125

–110

–115

–105

–100

–120

2.25

5.25

REFERENCE VOLTAGE (V)

2.75

3.25

3.75

4.25

4.75

THD

SFDR

100

102

104

106

108

110

112

114

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