STAC9704 Datasheet, PDF (44/49 Pages) Hynix Semiconductor – Multimedia Audio Codec for AC97

SigmaTel, Inc.
STAC9704/7
Spurious Tone Rejection
Attenuation, Gain Step Size
Input Impedance
Input Capacitance
Vrefout
Interchannel Gain Mismatch ADC
Interchannel Gain Mismatch DAC
Gain Drift
DAC Offset Voltage
Deviation from Linear Phase
External Load Impedance
Mute Attenuation (0 dB)
-
+100
−
dB
-
1.5
−
dB
10
-
−
K Ohm
-
15
−
pF
-
0.41 x
−
V
AVdd
0.5
dB
-
0.5
dB
100
ppm/ ^o C
10
50
mV
1
degree
10
K ohm
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.
44
10/02/98