AD7980BCPZ-R2 datasheet(9/28 Pages) AD

9 / 28 page

Data Sheet

AD7980

Rev. C | Page 9 of 28

TYPICAL PERFORMANCE CHARACTERISTICS

VDD = 2.5 V, VREF = 5.0 V, VIO = 3.3 V, unless otherwise noted.

1.25

–1.25

65536

CODE

1.00

0.75

0.50

0.25

–0.25

–0.75

–0.50

–1.00

16384

32768

49152

POSITIVE INL: +0.33 LSB

NEGATIVE INL: –0.39 LSB

Figure 6. Integral Nonlinearity vs. Code, REF = 5 V

1.25

1.00

–1.25

–1.00

65536

CODE

0.75

0.50

0.25

–0.25

–0.75

–0.50

16384

32768

49152

POSITIVE INL: +0.47 LSB

NEGATIVE INL: –0.26 LSB

Figure 7. Integral Nonlinearity vs. Code, REF = 2.5 V

–180

500

FREQUENCY (kHz)

–20

–40

–60

–80

–100

–120

–140

–160

100

200

300

400

fS = 1 MSPS

fIN = 10kHz

SNR = 91.27dB

THD = –114.63dB

SFDR = 110.10dB

SINAD = 91.25dB

Figure 8. FFT Plot, REF = 5 V

1.00

–1.00

65536

CODE

0.75

0.50

0.25

–0.25

–0.75

–0.50

16384

32768

49152

POSITIVE INL: +0.18 LSB

NEGATIVE INL: –0.21 LSB

Figure 9. Differential Nonlinearity vs. Code, REF = 5 V

1.00

–1.00

65536

CODE

0.75

0.50

0.25

–0.25

–0.75

–0.50

16384

32768

49152

POSITIVE INL: +0.25 LSB

NEGATIVE INL: –0.22 LSB

Figure 10. Differential Nonlinearity vs. Code, REF = 2.5 V

–180

500

FREQUENCY (kHz)

–20

–40

–60

–80

–100

–120

–140

–160

100

200

300

400

fS = 1 MSPS

fIN = 10kHz

SNR = 86.8dB

THD = –111.4dB

SFDR = 105.9dB

SINAD = 86.8dB

Figure 11. FFT Plot, REF = 2.5 V

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