alc250-lf Realtek Semiconductor Corporation, alc250-lf Datasheet - Page 10

• Manufacturer Part Number: alc250-lf
• Description: Two-channel Ac?97 2.3 Audio Codec With Equalizer
• Manufacturer: Realtek Semiconductor Corporation

5.3 Filter/Reference/NC
5.4 Power/Ground
Two-Channel AC’97 2.3 Audio Codec
MONO-OUT/
VREFOUT3
VREFOUT2
VREFOUT3
HP-OUT-R
HP-OUT-L
VREFOUT
(B version)
DC VOL
VREF
AVDD1
AVDD2
DVDD1
DVDD2
AFILT1
AFILT2
AVSS1
AVSS2
DVSS1
DVSS2
VAUX
Name
Name
Name
NC
NC
NC
Type Pin No
Type Pin No
Type Pin No
IO
IO
O
O
O
O
-
-
-
-
I
I
-
-
I
I
I
I
I
I
I
I
39
41
37
29
30
31
32
34
40
45
25
38
27
28
33
37
26
42
1
9
4
7
Headphone Out Left
channel
Headphone Out Left
channel
Mono output /
Third reference voltage
Reference voltage
Ref. voltage out
ADC anti-aliasing filter
ADC anti-aliasing filter
Not Connection
DC
Control
Secondary Ref. voltage out
Third Ref. voltage out
Auxiliary Power to keep CD
and amplifier turned on.
Not Connection
Not Connection
Analog VDD (5.0V or 3.3V)
Analog VDD (5.0V or 3.3V)
Analog GND
Analog GND
Digital VDD (3.3V)
Digital VDD (3.3V)
Digital GND
Digital GND
Description
Description
Voltage
Description
Volume
5
ALC250: Analog output with amplifier / Analog input
ALC250: Analog output with amplifier / Analog input
Analog output / Voltage output (2.5V/4.0V)
1uf capacitor to analog ground
Analog DC voltage output (2.5V / 4.0V)
1000pf capacitor to analog ground.
1000pf capacitor to analog ground.
Analog Input (AGND~AVDD)
Analog DC voltage output (2.5V / 4.0V)
Analog DC voltage output (2.5V / 4.0V)
+5V analog stand-by power
Characteristic Definition
Characteristic Definition
Characteristic Definition
Total: 18 Pins
Total: 11 Pins
Total: 8 Pins
ALC250 DataSheet
Rev1.3