Silicon Laboratories SI2493/57/34/15/04 - Manual (Page 48)

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48 Rev. 1.3
4.3. Bill of Materials
Component Value Supplier(s)
C1, C2 33 pF, Y2, X7R, ±20% Panasonic, Murata, Vishay,
Holy Stone
C3 10 nF, 250 V, X7R, ±20% Venkel, SMEC
C4 1.0 µF, 50 V, Elec/Tant, ±20% Panasonic
C5, C6, C50, C52 1 0.1 µF, 16 V, X7R, ±20% Venkel, SMEC
C7 2.7 nF, 50 V, X7R, ±20% Venkel, SMEC
C8, C9 680 pF, Y2, X7R, ±10% Panasonic, Murata, Vishay,
Holy Stone
C10 0.01 µF, 16 V, X7R, ±20% Venkel, SMEC
C40
C41 32.768 kHz, 18 pF, 16 V, NPO, ±5%
Venkel, SMEC
4.9152 MHz, 27 MHz, 33 pF, 16 V, NPO, ±5%
C51, C53
1
0.22 µF, 16 V, X7R, ±20% Venkel, SMEC
D1, D2
2
Dual Diode, 225 mA, 300 V, MMBT3004S Diodes Inc.
FB1, FB2 Ferrite Bead, BLM18AG601SN1 Murata
Q1, Q3 NPN, 300 V, MMBTA42 Diodes Inc., Fairchild
Q2 PNP, 300 V, MMBTA92 Diodes Inc., Fairchild
Q4, Q5 NPN, 80 V, 330 mW, MMBTA06 Diodes Inc., Fairchild
RV1 Sidactor, 275 V, 100 A Teccor, Protek, ST Micro
R1 1.07 k
, 1/2 W, 1%
Venkel, SMEC, Panasonic
R2 150
, 1/16 W, 5%
Venkel, SMEC, Panasonic
R3 3.65 k
, 1/2 W, 1%
Venkel, SMEC, Panasonic
R4 2.49 k
, 1/2 W, 1%
Venkel, SMEC, Panasonic
R5, R6 100 k
, 1/16 W, 5%
Venkel, SMEC, Panasonic
R7, R8 20 M
, 1/16 W, 5%
Venkel, SMEC, Panasonic
R9 1 M
, 1/16 W, 1%
Venkel, SMEC, Panasonic
R10 536
, 1/4 W, 1%
Venkel, SMEC, Panasonic
R11 73.2
, 1/2 W, 1%
Venkel, SMEC, Panasonic
R12, R13 56
, 1/16 W, 1%
Venkel, SMEC, Panasonic
R15, R16
3
0
, 1/16 W
Venkel, SMEC, Panasonic
U1 Si24xx ISOmodem Silicon Labs
U2 Si3018 Silicon Labs
Y1 4
32.768 kHz, 12 pF, 100 ppm, 50 k
 max ESR
ECS Inc., Siward, Abracon 4.9152 MHz, 20 pF, 100 ppm, 150
 ESR
27 MHz (from external clock)
Z1 Zener Diode, 43 V, 1/2 W, BZT84C43 On Semi
Notes:
1. C52 and C53 should not be populated with the Si2493 16-pin package option.
2. Several diode bridge configurations are acceptable. For example, a single DF04S or four 1N4004 diodes may be used.
3. Murata BLM18AG601SN1 may be substituted for R15–R16 (0
) to decrease emissions.
4. To ensure compliance with ITU specifications, frequency tolerance must be less than 100 ppm including initial
accuracy, 5-year aging, 0 to 70 °C, and capacitive loading. For optimal V.92 PCM upstream performance, the
recommended crystal accuracy is ±25 ppm.