Datasheet

APPLICATIONINFORMATION
TYPICALCIRCUITCONNECTION1
D+
28
27
26
25
24
23
22
21
20
19
1
2
3
4
5
6
7
8
9
10
PCM2906B
D–
V
BUS
DGNDU
HID0
HID1
HID2
SEL0
SEL1
V
CCCI
SSPND
XTI
V
DDI
DGND
DOUT
DIN
XTO
V
CCP2I
AGNDX
V
CCXI
D+
D–
C
1
11
12
13
14
AGNDC
V L
IN
V R
IN
V
COM
18
17
16
15
V
CCP1I
V L
OUT
V R
OUT
AGNDP
22 W
22 W
1.5k 3W ´
1.5kW
GND
V
BUS
C
2
C
9
C
10
1MW
12MHz
C
5
C
6
C
3
C
8
C
11
C
12
LPF,
Amp
LPF,
Amp
C
7
C
4
3.60V–
3.85V
13kW27kW
IN
1
OUT
2
GND
3
ADJ
4
EN
5
IC1
MUTE/
Power
Down
+
+
C
13
+
+
+
+
D
1
2.2 W
1 Fm
S0264-02
PCM2906B
SLES227–DECEMBER2008........................................................................................................................................................................................... www.ti.com
Figure36illustratesatypicalcircuitconnectionforasimpleapplication.Thecircuitillustratedisforinformation
only.TheentireboarddesignshouldbeconsideredtomeettheUSBspecificationasaUSB-compliantproduct.
NOTE:C
1
,C
2
:10µF
C
3
,C
4
,C
7
,C
8
,C
13
:1µF(Thesecapacitorsmustbelessthan2µF.)
C
5
,C
6
:10pFto33pF(dependingoncrystalresonator)
C
9
,C
10
,C
11
,C
12
:Thecapacitancemayvarydependingondesign.
IC1:REG103xA-A(TI)orequivalent.AnalogperformancemayvarydependingonIC1.
D
1
:Schottkybarrierdiode(V
F
≤350mVat10mA,I
R
≤2µAat4V)
Figure36.Bus-PoweredConfigurationforHigh-PerformanceApplication
24SubmitDocumentationFeedbackCopyright©2008,TexasInstrumentsIncorporated
ProductFolderLink(s):PCM2906B
Not Recommended for New Designs