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STAC9750 Datasheet, PDF (13/73 Pages) Integrated Device Technology – VALUE-LINE TWO-CHANNEL AC’97 CODECS
◁
STAC9750/9751
VALUE-LINE TWO-CHANNEL AC’97 CODECS
PC AUDIO
2.1.7.
STAC9751 Analog Performance Characteristics
(Tambient = 25 ºC, AVdd = DVdd = 3.3 V ± 5%, AVss=DVss=0 V; 1 KHz input sine wave; Sample Fre-
quency = 48 KHz; 0dB = 1 Vrms, 10 KΩ / 50 pF load, Testbench Characterization BW: 20 Hz –
20 KHz, 0dB settings on all gain stages)
Parameter
Min
Typ
Full Scale Input Voltage:
All Analog Inputs except Microphone
-
1.0
Microphone Inputs (Note 1)
-
0.03
Full Scale Output:
Line Output
-
0.5
PCM (DAC) to LINE_OUT
MONO_OUT
HEADPHONE_OUT (32 Ω load) (peak)
0.5
-
0.5
-
12.5
Analog S/N: (Note 2)
CD to LINE_OUT
Other to LINE_OUT
-
90
-
90
D/A to LINE_OUT
LINE_IN to A/D with High pass filter enabled
Analog Frequency Response (Note 3)
-
89
-
85
20
-
Total Harmonic Distortion: (Note 4)
CD to LINE_OUT
-
89
Other to LINE_OUT
D/A to LINE_OUT (full scale)
LINE_IN to A/D with High pass filter enabled
-
89
-
89
-
84
HEADPHONE_OUT
A/D & D/A Digital Filter Pass Band (Note 5)
A/D & D/A Digital Filter Transition Band
74
80
20
-
19,200
-
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)
28,800
-
100
-
55
-
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)
-
-
-
70
-
100
Spurious Tone Rejection
Attenuation, Gain Step Size
Input Impedance (Note 8)
-
100
-
1.5
-
50
Input Capacitance
VREF_OUT
-
15
-
0.5 X AVdd
Table 1. STAC9751 Analog Performance Characteristics
Max
-
-
-
-
-
-
-
-
-
20,000
-
-
-
-
-
19,200
28,800
-
-
-
1
-
-
-
-
-
-
-
Unit
Vrms
Vrms
Vrms
Vrms
Vrms
mW
dB
dB
dB
dB
Hz
dB
dB
dB
dB
dB
Hz
Hz
Hz
dB
dB
ms
dB
dB
dB
dB
KΩ
pF
V
IDT™
VALUE-LINE TWO-CHANNEL AC’97 CODECS
13
STAC9750/9751
V 5.8 103106
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