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SigmaTel, Inc.
Data Sheet
STAC9721
44
04/07/00
04/07/00
Vrefout
-
0.5 x
AVdd
−
V
Interchannel Gain Mismatch ADC
0.5
dB
Interchannel Gain Mismatch DAC
-
0.5
dB
Gain Drift
100
ppm/ oC
DAC Offset Voltage
10
50
mV
Deviation from Linear Phase
1
degree
External Load Impedance
10
K
Ω
Mute Attenuation (0 dB)
90
96
dB
Notes:
1.
With +20 dB Boost on, 1.0Vrms with Boost off
2.
± 1 dB limits
3.
The ratio of the rms output level with 1 kHz full scale input to the rms output level with all
zeros into the digital input. Measured “A weighted” over a 20 Hz to a 20 kHz bandwidth.
(AES17-1991 Idle Channel Noise or EIAJ CP-307 Signal-to-noise Ratio).
4.
0 dB gain, 20 kHz BW, 48 kHz Sample Frequency
5.
± 0.25dB limits
6.
Stop Band rejection determines filter requirements. Out-of-Band rejection determines
audible noise.
7.
The integrated Out-of-Band noise generated by the DAC process, during normal PCM audio
playback, over a bandwidth 28.8 to 100 kHz, with respect to a 1 Vrms DAC output.
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