AD7902 datasheet(10/29 Pages) AD

10 / 29 page

Data Sheet

AD7903

Rev. A | 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, SFDR vs. Reference Voltage

45000

40000

35000

30000

25000

20000

15000

10000

5000

FFE1 FFE2 FFE3 FFE4 FFE5 FFE6 FFE7 FFE8 FFE9 FFEA

CODES IN HEX

40000

35000

30000

25000

20000

15000

10000

5000

FFD2 FFD3 FFD4 FFD5 FFD6 FFD7 FFD8 FFD9 FFDA FFDB

CODES IN HEX

100

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

45000

40000

35000

30000

25000

20000

15000

10000

5000

FFF1 FFF2 FFF3 FFF4 FFF5 FFF6 FFF7 FFF8 FFF9

FFFB

FFFA

CODES IN HEX

–10

–9

–8

–7

–6

–5

–4

–3

–2

–1

INPUT LEVEL (dB)

–95

–125

–110

–115

–105

–100

–120

115

100

105

110

2.25

5.25

REFERENCE VOLTAGE (V)

2.75

3.25

3.75

4.25

4.75

THD

SFDR

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