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STAC9767 Datenblatt(PDF) 11 Page - Integrated Device Technology

Teilenummer STAC9767
Bauteilbeschribung  TWO-CHANNEL, 20-BIT, AC??7 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
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Hersteller  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

STAC9767 Datenblatt(HTML) 11 Page - Integrated Device Technology

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STAC9766/9767
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
PC AUDIO
IDT™
11
STAC9766/9767
V 7.4 12/06
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
Note:
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
(Tambient =25ºC, AVdd=3.3V±5%, DVdd=3.3V±5%, AVss=DVss=0V; 1KHzinputsine
wave; Sample Frequency=48KHz; 0dB=1Vrms, 10K
Ω/ 50 pFload, TestbenchCharacterization
BW: 20Hz–20KHz, 0dB settings on all gain stages)
D/A to LINE_OUT
-
95
-
dB
LINE_IN to A/D with High pass filter enabled
-
85
-
dB
Analog Frequency Response (Note 3)
20
-
20,000
Hz
Total Harmonic Distortion: (Note 4)
CD to LINE_OUT
-
95
-
dB
Other to LINE_OUT
-
95
-
dB
D/A to LINE_OUT (full scale)
-
84
-
dB
LINE_IN to A/D with High pass filter enabled
84
-
-
dB
HEADPHONE_OUT
74
80
-
dB
A/D & D/A Digital Filter Pass Band (Note 5)
20
-
19,200
Hz
A/D & D/A Digital Filter Transition Band
19,200
-
28,800
Hz
A/D & D/A Digital Filter Stop Band
28,800
-
-
Hz
A/D & D/A Digital Filter Stop Band Rejection (Note 6)
100
-
-
dB
DAC Out-of-Band Rejection (Note 7)
55
-
-
dB
Group Delay (48 KHz sample rate)
-
1
ms
Any Analog Input to LINE_OUT Crosstalk (10 KHz Signal Frequency)
70
-
-
dB
Any Analog Input to LINE_OUT Crosstalk (1 KHz Signal Frequency)
-
100
-
dB
Spurious Tone Rejection
-
100
-
dB
Attenuation, Gain Step Size
-
1.5
-
dB
Input Impedance (Note 8)
-
50
-
K
Input Capacitance
-
15
-
pF
VREFout
-
0.5 x AVdd
-
V
Interchannel Gain Mismatch ADC
-
-
0.5
dB
Interchannel Gain Mismatch DAC
-
-
0.5
dB
Parameter
Min
Typ
Max
Unit
Full Scale Input Voltage:
All Analog Inputs except Mic
-
1.0
-
Vrms
Mic Inputs (Note 1)
-
0.03
-
Vrms
Full Scale Output:
Line Output
-
0.5
-
Vrms
Parameter
Min
Typ
Max
Unit


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