AD4020BCPZ-R2 datasheet(12/39 Pages) AD

12 / 39 page

AD4020/AD4021/AD4022

Data Sheet

Rev. B | Page 12 of 39

50000

100000

150000

200000

250000

524210

524220

524230

524240

524250

524260

524270

ADC CODE

2.5V CODE CENTER

5V CODE CENTER

Figure 11. Histogram of a DC Input at Code Center, VREF = 2.5 V and VREF = 5 V

–60

–160

–120

–20

–100

–80

–140

–40

–180

100

100k

10k

900k

FREQUENCY (Hz)

VREF = 5V

SNR = 100.33dB

THD = –123.99dB

SINAD = 100.31dB

Figure 12. 1 kHz, −0.5 dBFS Input Tone Fast Fourier Transform (FFT),

VREF = 5 V

–60

–160

–120

–20

–100

–80

–140

–40

–180

100k

10k

900k

FREQUENCY (Hz)

VREF = 5V

SNR = 98.37dB

THD = –98.52dB

SINAD = 95.58dB

Figure 13. 100 kHz, −0.5 dBFS Input Tone FFT

50000

100000

150000

200000

250000

524205

524215

524225

524235

524245

524255

524265

ADC CODE

2.5V CODE TRANSITION

5V CODE TRANSITION

Figure 14. Histogram of a DC Input at Code Transition, VREF = 2.5 V and VREF = 5 V

–60

–160

–120

–20

–100

–80

–140

–40

–180

100

100k

10k

900k

FREQUENCY (Hz)

VREF = 2.5V

SNR = 95.01dB

THD = –118.60dB

SINAD = 94.99dB

Figure 15. 1 kHz, −0.5 dBFS Input Tone FFT, VREF = 2.5 V

–60

–160

–120

–20

–100

–80

–140

–40

–180

100k

10k

900k

FREQUENCY (Hz)

VREF = 5V

SNR = 91.22dB

THD = –91.97dB

SINAD = 89.15dB

Figure 16. 400 kHz, −0.5 dBFS Input Tone FFT

AD4020BCPZ-R2 Datasheet(PDF) 12 Page - Analog Devices

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