STAC9721 Datasheet, PDF (42/48 Pages) List of Unclassifed Manufacturers – Stereo AC 97 Codec With Multi-Codec Option

SigmaTel, Inc.
Data Sheet
STAC9721
Out-of-Band Rejection⁷
-
Group Delay
-
Power Supply Rejection Ratio (1kHz)
-
Crosstalk between Input channels
-
Spurious Tone Rejection
-
Attenuation, Gain Step Size
-
Input Impedance
10
Input Capacitance
-
Vrefout
-
Interchannel Gain Mismatch ADC
Interchannel Gain Mismatch DAC
Gain Drift
DAC Offset Voltage
Deviation from Linear Phase
External Load Impedance
10
Mute Attenuation (Vrms input)
90
+40
-
+40
-
+100
1.5
-
15
0.5 x AVdd
-
100
10
96
−
dB
1
ms
−
dB
-70
dB
−
dB
−
dB
−
KΩ
−
pF
−
V
0.5
dB
0.5
dB
ppm/deg. C
50
mV
1
degree
K ohm
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.
42
04/07/00
04/07/00