Silicon Laboratories SI2493/57/34/15/04, SI2494/39 Bill of Materials, Component Value Suppliers

AN93

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, C521	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	32.768 kHz, 18 pF, 16 V, NPO, ±5%	Venkel, SMEC
C41	4.9152 MHz, 27 MHz, 33 pF, 16 V, NPO, ±5%
C51, C531	0.22 µF, 16 V, X7R, ±20%	Venkel, SMEC
D1, D22	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 kΩ, 1/2 W, 1%	Venkel, SMEC, Panasonic
R2	150 Ω, 1/16 W, 5%	Venkel, SMEC, Panasonic
R3	3.65 kΩ, 1/2 W, 1%	Venkel, SMEC, Panasonic
R4	2.49 kΩ, 1/2 W, 1%	Venkel, SMEC, Panasonic
R5, R6	100 kΩ, 1/16 W, 5%	Venkel, SMEC, Panasonic
R7, R8	20 MΩ, 1/16 W, 5%	Venkel, SMEC, Panasonic
R9	1 MΩ, 1/16 W, 1%	Venkel, SMEC, Panasonic
R10	536 Ω, 1/4 W, 1%	Venkel, SMEC, Panasonic
R11	73.2 Ω, 1/2 W, 1%	Venkel, SMEC, Panasonic
R12, R13	56 Ω, 1/16 W, 1%	Venkel, SMEC, Panasonic
R15, R163	0 Ω, 1/16 W	Venkel, SMEC, Panasonic
U1	Si24xx ISOmodem	Silicon Labs
U2	Si3018	Silicon Labs
Y14	32.768 kHz, 12 pF, 100 ppm, 50 kΩ max ESR
		ECS Inc., Siward, Abracon
	4.9152 MHz, 20 pF, 100 ppm, 150 Ω 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 Ω) 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.

48 Rev. 1.3