AD1890/AD1891

REV. 0

–17–

–80.00

–100.0

–120.0

–110.0

–90.00

–95.00

–105.0

–115.0

–85.00

100

20k

10k

1k

20

FREQUENCY – Hz

Figure 17a. AD1890—THD+N vs. Frequency, 48 kHz Input

Sample Frequency, 44.1 kHz Output Sample Frequency,

Full-Scale Input Signal

–90.00

–110.0

–130.0

–120.0

–100.0

–105.0

–115.0

–125.0

–95.00

0.0

–90.0

–100

–10.0

–20.0

–30.0

–40.0

–50.0

–60.0

–70.0

–80.0

20kHz

1kHz

AMPLITUDE – dBFS

Figure 18a. AD1890—THD+N vs. Input Amplitude,

44.1 kHz Input Sample Frequency, 48 kHz Output Sample

Frequency, 1 kHz and 20 kHz Tones

100

20k

10k

1k

20

FREQUENCY – Hz

–120.0

–80.00

–100.0

–110.0

–90.00

–95.00

–105.0

–115.0

–85.00

Figure 17b. AD1891—THD+N vs. Frequency, 48 kHz Input

Sample Frequency, 44.1 kHz Output Sample Frequency,

Full-Scale Input Signal

0.0

–90.0

–100

–10.0

–20.0

–30.0

–40.0

–50.0

–60.0

–70.0

–80.0

1kHz

AMPLITUDE – dBFS

–96.00

–100.00

–98.00

–94.00

–95.00

–97.00

–99.00

–92.00

–93.00

–90.00

–91.00

20kHz

Figure 18b. AD1891—THD+N vs. Input Amplitude,

44.1 kHz Input Sample Frequency, 48 kHz Output Sample

Frequency, 1 kHz and 20 kHz Tones

10.000

8.0000

6.0000

4.0000

2.0000

0.0

–2.000

–4.000

–6.000

–8.000

–10.00

10.0

11.0

12.0

13.0

14.0

15.0

16.0

17.0

18.0

19.0

20.0

FREQUENCY – Hz

44.1k

40k

35k

30k

25k

Figure 19. AD1890/AD1891 Digital Filter Signal Transfer Function, 10 kHz to

20 kHz, 44.1 kHz Input Sample Frequency, 44.1, 40, 35, 30 and 25 kHz

Output Sample Frequencies