alc272 Realtek Semiconductor Corporation, alc272 Datasheet - Page 78

• Manufacturer Part Number: alc272
• Description: 4 Channel High Definition Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

9.3. Analog Performance
4 Channel High Definition Audio Codec
Standard Test Conditions
Parameter
Full-Scale Input Voltage
Full-Scale Output Voltage
S/N (A Weighted)
THD+N
Magnitude Response
Power Supply Rejection Ratio
Total Out-of-Band Noise (28.8kHz~100kHz)
Crosstalk Between Output Channel
Output Noise Level During System Activity
Output Inter-Channel Phase Delay
Input Impedance (Gain=0dB)
Output Impedance
Power Supply Current (Normal Operation)
AVDD=5V/DVDD=3.3V
Power Supply Current (Power Down Mode)
AVDD=5V/DVDD=3.3V
VREFOUTx Output Voltage (AVDD=5.0V)
VREFOUTx Output Current (AVDD=5.0V)
*1: The higher edge of magnitudes for DAC and ADC are -0.6dB@20,000Hz.
Analog Input (Gain=0dB)
ADC
DAC
ADC
DAC
Headphone Amplifier
ADC
DAC
Headphone Amplifier (32Ω Load)
ADC (-3dB lower edge, -1dB higher edge)*
DAC (-3dB lower edge, -1dB higher edge)*
Pass Band Ripple for DAC and ADC
Line Output
Amplified Output
• T
• 1kHz input sine wave; Sampling frequency=48kHz; 0dB=1Vrms
• 10KΩ/50pF load; Test bench Characterization BW: 10Hz~22kHz
Table 86. Analog Performance
ambient
1
1
=25
o
C, DVDD=3.3V±5%, AVDD=5.0V±5%
70
-0.02
Min
10
10
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1.5/0.4
45/25
Typ
100
-80
-87
-75
-60
-60
-80
1.6
1.4
1.1
2.5
90
95
95
32
1
5
-
-
-
-
-
Track ID: JATR-1076-21
> 20,000
> 20,000
+0.02
Max
110
0.2
3.2
2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Datasheet
dB FSA
dB FSA
dBFS A
Degree
dB FS
dB FS
dB FS
Units
Vrms
Vrms
Vrms
ALC272
KΩ
mA
mA
mA
Hz
Hz
dB
dB
dB
dB
dB
Ω
Ω
V
Rev. 1.0