AN383 Просмотр технического описания (PDF) - Silicon Laboratories
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AN383 Datasheet PDF : 69 Pages
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AN383
2.4. Si47xx 3x3 mm Bill of Materials
The required bill of materials for Figure 1 is shown in Table 6.
Designator
C1
C3
R12
R13
R14
R15
Table 6. Required Bill of Materials
Description
VD/VDD Supply bypass capacitor,
22 nF, 10%, Z5U/X7R
VI0 Supply bypass capacitor,
100 nF, 10%, Z5U/X7R
DOUT current limiting resistor, 604
DCLK current limiting resistor, 25 –2 k
DFS current limiting resistor, 25 –2 k
DFS current limiting resistor, 25 –2 k
Note
For supply noise mitigation.
Optional for Si47xx rev C and earlier parts.
For Si47xx rev D parts, C3 is required.
For digital audio output
(Si4705/06/21/31/35/37/39/8x only)
For digital audio
(Si4705/06/1x/2x/31/35/37/39/8x only)
For digital audio output
(Si4705/06/21/31/35/37/39/8x only)
For digital audio input (Si471x/2x only)
R16
DIN current limiting resistor, 25 –2 k
For digital audio input (Si471x/2x only)
U1
Silicon Laboratories Si47xx,
3x3 mm, 20 pin, QFN
The optional bill of materials for Figure 1 is shown in Table 7.
Table 7. Optional Bill of Materials
Designator
C2
C6, C7
C8, C9
C10, C11
C12, C13
R2–R6
R7,R8
R1, R9, R10, R11,
R17, R18
X1
Description
VA Supply bypass capacitor,
22 nF, 10%, Z5U/X7R
AC coupling capacitor,
0.39 µF, X7R/X5R
AC coupling capacitor,
0.39 µF, X7R/X5R
Crystal load capacitor, 22 pF, 5%, C0G
Noise mitigation capacitor
2.2 pF, C0G
Current limiting resistor, 25–2 k
Pullup resistor, 4.7 k
0 jumper
Crystal, Epson FC-135
Note
For supply noise mitigation (Si4702/03 only)
For analog audio input
(Si471x/2x only)
For analog audio output
For internal oscillator option
For DFS noise mitigation purpose
For digital system noise mitigation
For I2C bus mode communication
For universal layout design supporting all
Si47xx
For internal oscillator feature
10
Rev. 0.8
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