alc272 Realtek Semiconductor Corporation, alc272 Datasheet - Page 79

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

10. Application Circuits
The ALC272 is NOT pin compatible with the ALC662, ALC88x, and ALC26x series HD Audio Codecs.
To get the best compatibility in hardware design and software driver, any modification should be
confirmed by Realtek. Realtek may upload the latest application circuits onto our website
(www.realtek.com.tw) without modifying this datasheet.
10.1. Filter Connection
4 Channel High Definition Audio Codec
+5VA
HPOUT-JD
LINE2-JD
MIC2-JD
C19
10u
Headphone Amp output w/o DC
blocking capacitors
+
Tied at one point only under the
codec or near the codec
AGND
CD3
0.1u
S/PDIF-OUT2
MONO
DMIC-CLK34
DMIC-CLK12
S/PDIF-OUT
R1
R3
R4
20K, 1%
39.2K, 1%
5.1K, 1%
R8
DMIC-DATA12
LOUT2-R
C65
LOUT2-L
DMIC-DATA34
20K, 1%
C64 100u
+3.3V
100P
LOUT1-L
LOUT1-R
DGND
HPOUT-L
HPOUT-R
37
38
39
40
41
42
43
44
45
46
47
48
MONO
AVDD2
SURR-L
JDREF
SURR-R
AVSS2
NC
DMIC-CLK3/4
SPDIFO2
DMIC-CLK1/2
EAPD
SPDIFO1
CD4
0.1u
Figure 18. Filter Connection
C30
10u
+
C44
10p
ALC272
2.2u
C1
+
71
C41
10p
2.2u
C2
+
CD1
10u
C40
10p
LINE2-VREFO
LINE1-VREFO
MIC2-VREFO
R31
R35
MIC1-VREFO
R20
R22
R27
LINE1-R
LINE2-R
Sense A
LINE1-L
LINE2-L
MIC1-R
MIC2-R
MIC1-L
MIC2-L
10
10
10
10
10
24
23
22
21
20
19
18
17
16
15
14
13
U1
C29
SDIN
SDOUT
BCLK
RESET#
SYNC
Track ID: JATR-1076-21
1u
+
C12
10u
CD10
0.1u
MIC2-R
MIC2-L
LINE2-R
LINE1-R
LINE1-L
MIC1-R
MIC1-L
LINE2-L
C31
100P
CD2
0.1u
C42
10u
+
MIC2-VREFO
R13
R14
R15
R16
LINE1-VREFO
LINE2-VREFO
+1.5V~+3.3V if HDA link
I/O voltage is scaleable
DVDD-IO:
R21
10K
R17
39.2K, 1%
20K, 1%
10K, 1%
5.1K, 1%
+3.3V or DVDD-IO
47K
+5VA
Datasheet
ALC272
LOUT1-JD
LINE1-JD
MIC1-JD
LOUT2-JD
PCBEEP
Rev. 1.0