STAC9766 Datasheet, PDF (11/97 Pages) Integrated Device Technology – TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING

STAC9766/9767
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
PC AUDIO
Note:
Parameter
D/A to LINE_OUT
LINE_IN to A/D with High pass filter enabled
Analog Frequency Response (Note 3)
Total Harmonic Distortion: (Note 4)
CD to LINE_OUT
Other to LINE_OUT
D/A to LINE_OUT (full scale)
LINE_IN to A/D with High pass filter enabled
HEADPHONE_OUT
A/D & D/A Digital Filter Pass Band (Note 5)
A/D & D/A Digital Filter Transition Band
A/D & D/A Digital Filter Stop Band
A/D & D/A Digital Filter Stop Band Rejection (Note 6)
DAC Out-of-Band Rejection (Note 7)
Group Delay (48 KHz sample rate)
Any Analog Input to LINE_OUT Crosstalk (10 KHz Signal Frequency)
Any Analog Input to LINE_OUT Crosstalk (1 KHz Signal Frequency)
Spurious Tone Rejection
Attenuation, Gain Step Size
Input Impedance (Note 8)
Input Capacitance
VREFout
Interchannel Gain Mismatch ADC
Interchannel Gain Mismatch DAC
Min
Typ
Max Unit
-
95
-
dB
-
85
-
dB
20
-
20,000 Hz
-
95
-
dB
-
95
-
dB
-
84
-
dB
84
-
-
dB
74
80
-
dB
20
-
19,200 Hz
19,200
-
28,800 Hz
28,800
-
-
Hz
100
-
-
dB
55
-
-
dB
-
1
ms
70
-
-
dB
-
100
-
dB
-
100
-
dB
-
1.5
-
dB
-
50
-
KΩ
-
15
-
pF
-
0.5 x AVdd
-
V
-
-
0.5
dB
-
-
0.5
dB
1. With +30 dB Boost on, 1.0 Vrms with Boost off
2. Ratio of Full Scale signal to idle channel noise output is 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).
3. ± 1dB limits for Line Output & 0dB gain
4. 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.
8. For all inputs except PC BEEP.
2.1.6. STAC9767 Analog Performance Characteristics
(T_ambient = 2 5 º C , A V d d = 3 . 3 V ± 5 % , D V d d = 3 . 3 V ± 5 % , A V s s = D V s s = 0 V ; 1 K H z i n p u t s i n e
wave; Sample Frequency=48KHz; 0dB=1Vrms, 10KΩ / 50 pFload, TestbenchCharacterization
BW: 20Hz–20KHz, 0dB settings on all gain stages)
Full Scale Input Voltage:
All Analog Inputs except Mic
Mic Inputs (Note 1)
Full Scale Output:
Line Output
Parameter
Min
Typ
Max
Unit
-
1.0
-
Vrms
-
0.03
-
Vrms
-
0.5
-
Vrms
IDT™
11
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
STAC9766/9767
V 7.4 12/06