Silicon Laboratories SI2493/57/34/15/04 - Manual (Page 45)

AN93
Rev. 1.3 45
Figure 17. Billing-Tone Filter
Table 33. Optional Billing Tone Filters Component Values
Symbol Value
C1,C2 0.027 µF, 50 V, ±10%
C3 0.01 µF, 250 V, ±10%
L3 3.3 mH, >120 mA, <10
, ±10%
Coilcraft RFB0810-332 or equivalent
L4 10 mH, >40 mA, <10
, ±10%
Coilcraft RFB0810-103 or equivalent
L4
C3
RING
TIP
FROM
LINE
To
DAA
C1
C2
L3