AD7475/AD7495

Data Sheet

Rev. D | Page 12 of 24

TYPICAL PERFORMANCE CHARACTERISTICS

Figure 7 shows a typical FFT plot for the AD7475 at a 1 MHz sample rate and a 100 kHz input frequency. Figure 8 shows a typical FFT

plot for the AD7495 at a 1 MHz sample rate and a 100 kHz input frequency. Figure 9 shows the SINAD performance vs. input frequency

for various supply voltages while sampling at 1 MSPS with an SCLK of 20 MHz.

FREQUENCY (kHz)

–115

0

50

100

150

200

250

300

–95

–75

–55

–35

350

400

500

450

–15

8192 POINT FFT

SINAD = 70.46dB

THD = –87.7dB

SFDR = –89.5dB

Figure 7. AD7475 Dynamic Performance

FREQUENCY (kHz)

–115

0

50

100

150

200

250

300

–95

–75

–55

–35

350

400

500

450

–15

8192 POINT FFT

SINAD = 69.95dB

THD = –89.2dB

SFDR = –91.2dB

Figure 8. AD7495 Dynamic Performance

INPUT FREQUENCY (kHz)

68.5

10

100

69.0

69.5

70.0

70.5

1000

71.0

Figure 9. AD7495 SINAD vs. Input Frequency at 1 MSPS