AD7991 datasheet(13/28 Pages) AD

13 / 28 page

AD7991/AD7995/AD7999

Rev. 0 | Page 13 of 28

TYPICAL PERFORMANCE CHARACTERISTICS

CODE

500

1000

1500

2000

2500

3000

3500

4000

–1.0

–0.8

–0.6

–0.4

–0.2

0.2

0.4

0.6

0.8

1.0

VDD = 2.7V

VREF = 2.35V

fSCL = 1.7MHz

Figure 4. DNL Error, VDD = 2.7 V, VREF = 2.35 V, fSCL = 1.7 MHz

Without Clock Stretching

CODE

500

1000

1500

2000

2500

3000

3500

4000

–1.0

–0.8

–0.6

–0.4

–0.2

0.2

0.4

0.6

0.8

1.0

VDD = 2.7V

VREF = 2.35V

fSCL = 1.7MHz

Figure 5. INL Error, VDD = 2.7 V, VREF = 2.35 V, fSCL = 1.7 MHz

Without Clock Stretching

12.0

8.0

REFERENCE VOLTAGE (V)

11.5

11.0

10.5

10.0

9.5

9.0

8.5

123

ENOB VDD = 3V

ENOB VDD = 5V

SINAD VDD = 5V

SINAD VDD = 3V

Figure 6. ENOB/SINAD vs. Reference Voltage, fSCL = 1.7 MHz

Without Clock Stretching

1.0

–1.0

1.2

REFERENCE VOLTAGE (V)

0.8

0.6

0.4

0.2

–0.2

–0.4

–0.6

–0.8

1.7

2.2

2.7

3.2

3.7

4.2

4.7

NEGATIVE INL

POSITIVE INL

Figure 7. INL Error vs. Reference Voltage , fSCL = 1.7 MHz

Without Clock Stretching

1.0

–1.0

1.2

REFERENCE VOLTAGE (V)

0.8

0.6

0.4

0.2

–0.2

–0.4

–0.6

–0.8

1.7

2.2

2.7

3.2

3.7

4.2

4.7

NEGATIVE DNL

POSITIVE DNL

Figure 8. DNL Error vs. Reference Voltage, fSCL = 1.7 MHz

Without Clock Stretching

CODE

500

1000

1500

2000

2500

3000

3500

4000

–1.0

–0.8

–0.6

–0.4

–0.2

0.2

0.4

0.6

0.8

1.0

VDD = 5V

VREF = 2.5V

fSCL = 1.7MHz

Figure 9. INL Error, VDD = 5 V, VREF = 2.5 V, fSCL = 1.7 MHz

Without Clock Stretching

AD7991 데이터시트(PDF) 13 Page - Analog Devices

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