AN350

Rev. 0.2

3

2.3. Si4708/09 2.5 x 2.5 mm Bill of Materials

The required bill of materials for Figure 1 is shown in Table 1.

The optional bill of materials for Figure 1 is shown in Table 2.

Table 1. Required Bill of Materials

Designator

Description

Note

C1

VD Supply bypass capacitor,

22 nF, 10%, Z5U/X7R

U1

Silicon Laboratories Si4708/09,

2.5 x 2.5 mm, 16 pin, QFN

R1

Series termination resistor, 1 k



For noise mitigation (Si4709 only)

Table 2. Optional Bill of Materials

Designator

Description

Note

C2

VA Supply bypass capacitor,

22 nF, 10%, Z5U/X7R

For supply noise mitigation

C3

VI0 Supply bypass capacitor,

100 nF, 10%, Z5U/X7R

For supply noise mitigation

C4

VCO filter capacitor,

3.3 pF, 0402, C0G,

Venkel C0402COG2503R3JN

For filtering of VCO energy

C8, C9

AC coupling capacitor,

0.39 µF, X7R/X5R

For analog audio output

R2–R6

Series termination resistor, 2 k



For system noise mitigation

R7, R8

Pullup resistor, 4.7 k



R3

Pulldown resistor

C5

GPO bypass capacitor,

3.3 pF

For noise mitigation (Si4709 only)