CMI8768 Datasheet, PDF (15/17 Pages) C-Media Electronics – PCI 8CH Integrated Sound Chip

PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 0.9
6.6 Analog Performance
The measurements are performed under the circumstance as:
T_ambient = 25℃, AVdd = 5.0V ± 5%, DVdd = 3.3V ± 5%, 10kΩ/50pF external load. Input is 1
kHz sine wave; Sampling frequency = 48 kHz; Bandwidth = 20 to 20 kHz; 0dB attenuation;
All sound effects such as 3D effects are disabled.
Parameter
Minimum
Full Scale Input Voltage:
Line Inputs (Mixer)
-
Line Inputs (A/D)
-
Mic Inputs (20dB boost)
-
Full Scale Output Voltage:
Front_Out
-
Side_Surround_Out
-
Center / LFE_out
-
Back_Surround_Out
-
SNR (Idle)
A/A
-
D/A
-
A/D
-
Dynamic Range (-60dB)
A/A
-
D/A
-
A/D
-
THD+N
A/A
-
D/A
-
A/D
-
Frequency Response
A/A
5
D/A
5
A/D
10
Cross-talk @ 10KHz (A/A)
-
Transition Band
19,200
Stop Band
28,800
Stop Band Rejection
-
Out-Of-Band Rejection
-
Power Supply Rejection Ratio
-
Master Volume Gain (32 steps)
Step Size
Control Range
-54
Analog Input Gain (16 steps)
Step Size
Control Range
-30
Mic Input Gain (16 steps)
Step Size
Control Range
-22
Mic Boost Gain
-
PCSPK Input Gain (4 steps)
Step Size
Control Range
-24
Recording Gain (16 steps)
Step Size
Control Range
0
Input Impedance
Copyright 2003-2004 © C-Media Electronics Inc.
Typical
1.1
-
0.1
1.1
1.1
1.1
1.1
100
101
86
100
94
85
0.005
0.017
0.015
-
-
-
100
-70
-65
-65
1.5
-
2
-
3
-
+20
8
-
1.5
-
Maximum
1.25
1.25
1.25
-
-
-
-
-
-
-
-
-
-
-
-
-
22,000
22,000
22,000
-
28,800
∞
-
-
-
+6
0
+24
-
0
+22.5
Units
Vrms
Vrms
Vrms
Vrms
Vrms
Vrms
Vrms
-
dB
dB
dB
dB
dB
dB
%
%
%
Hz
Hz
Hz
dB
Hz
Hz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
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