Datasheet

Line
Input
LM4550
$&µ97 Rev 2.1
Codec
LINE_IN_R
24
LINE_IN_L
23
LINE_OUT_L
1.0 PF
35
Line
Output
AV
DD
DV
DD1
DV
SS1
DV
SS2
DV
DD2
AV
SS
Microphone
Inputs
MIC2
22
MIC1
21
CD
Input
CD_GND
19
CD_L
18
CD_R
20
Video
Input
VIDEO_R
17
VIDEO_L
16
Auxiliary
Input
AUX_R
15
AUX_L
14
Mono
Inputs
PHONE
13
PC_BEEP
12
BIT_CLK
6
SDATA_OUT
5
SDATA_IN
8
SYNC
10
RESET#
11
XTAL_IN
2
XTAL_OUT
3
33 pF
33 pF
1 M:
Z97
Digital
Controller
24.576 MHz
Analog
Ground
Digital
Ground
Connect Grounds at a single point
underneath or close to the package
+
LINE_OUT_R
1.0 PF
36
+
HP_OUT_L
220 PF
39
+
HP_OUT_C
1.0 PF
40
+
HP_OUT_R
220 PF
41
+
Headphone
Output
1.0 PF
37
+
MONO_OUT
V
REF
3DN
V
REF_OUT
AV
DD
10 k:
+
0.1 PF 3.3 PF
27
28
3DP
33
34
0.022 PF
Optional: for
National 3D Sound
ID0#
ID1#
45
46
48
NC
NC
NC
NC
NC
NC
NC
NC
44
43
42
38
32
31
30
29
NC
NC
NC
NC
NC
NC
NC
NC
26 4 7
CIN
EAPD
47
NC
NC
Default setting: Primary
Codec (ID 00)
External Amplifier
Power Down
NC
Mono
Output
1 PF
25
+
0.1 PF
5V Analog Supply
1
9
All NC pins should normally
be left floating.
See Pin Descriptions for
details
V
REF
Output
(For external
microphone bias)
1.0 PF
1.0 PF
1.0 PF
1.0 PF
1.0 PF
1.0 PF
1.0 PF
1.0 PF
1.0 PF
1.0 PF
1.0 PF
1.0 PF
1.0 PF
+
++++++++++++
AV
DD
3.3V or 5V Digital Supply
1 PF
+
0.1 PF
27 nH.
OBSOLETE
LM4550
SNAS032F –SEPTEMBER 2001–REVISED APRIL 2013 www.ti.com
Typical Application
Figure 8. LM4550 Typical Application Circuit, Single Codec, 1 Vrms inputs
8 Submit Documentation Feedback Copyright © 2001–2013, Texas Instruments Incorporated
Product Folder Links: LM4550