Silicon Laboratories Si2457 Manual de usuario descargar pdf (Pagina 13)

Si2493/57/34/15/04

Global ISOmodem-EVB

Rev. 0.7 13

Bias

Ring Detect/CID/Voltage monitoring

DC Term

Add 0.020 to 0.030 sq.

inches of Cu at all

transistor collectors

Place C3 near D1

No GND or I_GND

copper planes in DAA

section.

TIP

RING

Keep 5 mm creepage

rules between this DAA

section and all else.

C1A

C2A

I_GND

R12

56.2

R12

56.2

C10

0.01uF

C10

0.01uF

MMBTA06LT1

MMBTA42LT1

C4X1uF

25VX8R

C4X1uF

25VX8R

RV1

P3100SB

RV1

P3100SB

MMBTA42LT1

FB1

600 Ohm

FB1

600 Ohm

150

2.49K

0.1uF

C0603

0.1uF

C0603

0.1uF

C0603

0.1uF

C0603

C2 33pFC2 33pF

680pF

HD04

MMBTA92LT1

680pF

100K

FB2

600 Ohm

FB2

600 Ohm

R11

73.2

R11

73.2

C1 33pFC1 33pF

R13

56.2

R13

56.2

C7 2.7nFC7 2.7nF

C41uF

R15

43V

R7 20MR7 20M

TSM-104-01-T-SV

4X1 Header

TSM-104-01-T-SV

4X1 Header

MMBTA06LT1

R8 20MR8 20M

3.65K

0.01uF

100K

1.07K

R16

Si3018

DCT

C1B

C2B

VREG

RNG1

DCT2

IGND

DCT3

QE2

VREG2

RNG2

R10

536

R10

536

Figure 9. Si3018/10 DAA Schematic

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 36 37

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