AD1857/AD1858
Typical Performance Characteristics
Figures 1 through 4 illustrate the typical performance of the
AD1857/AD1858 as measured by an Audio Precision System
Two. Signal-to-Noise (dynamic range) THD+N performance is
shown under a range of conditions. Figure 5 shows the power
supply rejection performance of the AD1857/AD1858. The
channel separation performance of the AD1857/AD1858 is
shown in Figure 6. The digital filter transfer function is shown
in Figure 7.
0
–10
–20
–30
–40
–50
–60
dBr A
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–70
–80
–90
–100
–110
–120
–130
–140
–150
0
2.5
5.0
7.5
10.0
kHz
12.5
15.0
17.5
20.0
dBr A
0
2.5
5.0
7.5
10.0
kHz
12.5
15.0
17.5
20.0
Figure 1. 1 kHz Tone at –0.5 dBFS
Figure 3. THD+N vs. Frequency at –0.5 dBFS
0
–10
–20
–30
–40
–50
0
–10
–20
–30
–40
–50
dBr A
–70
–80
–90
–100
–110
–120
–130
–140
0
2.5
5.0
7.5
10.0
kHz
12.5
15.0
17.5
20.0
dBr A
–60
–60
–70
–80
–90
–100
–110
–120
–130
–140
–100
–80
–60
dBFS
–40
–20
0
Figure 2. 1 kHz Tone at –10 dBFS
Figure 4. THD+N vs. Amplitude at 1 kHz
REV. 0
–7–
AD [ ANALOG DEVICES ]
