5-32
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Technical Reference Guide
Input/Output Interfaces
5.8.5 Audio Specifications
The specifications for the HD Audio subsystem are listed in Table 5-24.
NOTE:
[1] Device driver limitation: 48 KHz
Table 5-24.
HD Audio Subsystem Specifications
Parameter
Measurement
Sampling Rates:
DAC
ADC
44.1-, 48-, 96-, & 192-KHz [1]
44.1-, 48-, & 96-KHz [1]
Resolution:
DAC
ADC
24-bit
20-bit
Nominal Input Voltage:
Mic In (w/+20 db gain)
Line In
.283 Vp-p
2.83 Vp-p
Subsystem Impedance (nominal):
Mic In
Line In
Line Out
Headphones Out
64K ohms
64K ohms
200 ohms
32 0hms
Signal-to-Noise Ratio
ADC
DAC
90 db (nom)
100 db (nom)
Total Harmonic Distortion (THD)
ADC
DAC
-82
-87
Max. Subsystem Power Output to 4-ohm Internal
Speaker (with 10% THD):
1.5 watts
Gain Step
1.5 db
Master Volume Range
-94.5 db
Frequency Response:
ADC/DAC
Internal Speaker
16 – 19,200 Hz
450–4000 Hz
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