STW5098_07 Datasheet, PDF (77/86 Pages) STMicroelectronics – Dual low power asynchronous stereo audio Codec with integrated power amplifiers

Typical performance plots
Figure 26. ADC path FFT
0
-20
-40
-60
-80
-100
-120
0 2k 4k 6k 8k 10k 12k 14k 16k 18k 20k
Frequency [Hz]
12 MHz master clock.
Differential input at Mic preamplifier, 21 dB gain.
48 kHz sampling rate.
Both channels active
Figure 28. DAC path FFT
0
-20
-40
-60
-80
-100
-1200 _{2k 4k 6k 8k 10k 12k 14k 16k 18k 20k}
Frequency [Hz]
12 MHz master clock.
48 kHz sampling rate
Differential output at line-out, 1kΩ load.
Both channels active
Figure 30. Analog path FFT
0
-20
-40
-60
-80
-100
-120
0 2k 4k 6k 8k 10k 12k 14k 16k 18k 20k
Frequency [Hz]
Differential input at Mic Preamplifier, 21 dB gain.
Direct Mic to Line-Out connection (MICLO=1)
Differential output at Line-Out, 20kΩ load. Both channels active
STw5098
Figure 27. ADC S/N versus input-level
100
90
80
70
60
50
40
30
20 _{-60 -50 -40 -30 -20 -10}
0
Input Level [dBFS]
12 MHz master clock
Differential input at Line-In Amplifier, 0 dB gain.
48 kHz Sampling Rate
A-Weighted, Both channels active
Figure 29. DAC S/N versus input-level
100
90
80
70
60
50
40
30
20 _{-60 -50 -40 -30 -20 -10}
0
Input Level [dBFS]
12 MHz master clock.
48 kHz Sampling Rate
Differential output at Line-Out, 1kΩ load.
A-Weighted, Both channels active
Figure 31. Analog path S/N versus input-level
100
90
80
70
60
50
40
30
20 _{-60 -50 -40 -30 -20 -10}
0
Input Level [dBFS]
Differential input at Line-In Amplifier, 0 dB gain.
Line-In to DA-Mixer to Line-Out connection.
Differential output at Line-Out, 20kΩ load. A-weighted, both channels
active
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