PCM2901

PCM2903

SLES034B − MARCH 2002 − REVISED JUNE 2004

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30

PCM2903 TYPICAL CIRCUIT CONNECTION

Figure 41 illustrates a typical circuit connection for a simple application. The circuit illustrated is for information

only. The whole board design should be considered to meet the USB specification as a USB compliant product.

NOTE:

IC1 must be driven by VDD with a 5-V tolerant input.

C1, C2, C3, C4, C7, C8: 10 µF

C5, C6: 10 pF to 33 pF (depending on crystal resonator)

C9, C10, C11, C12: The capacitance may vary depending on design.

D+

28

27

26

25

24

23

22

21

20

19

1

2

3

4

5

6

7

8

9

10

PCM2903

D−

VBUS

DGNDU

HID0

HID1

HID2

SEL0

SEL1

VCCC

SSPND

XTI

VDD

DGND

DOUT

DIN

XTO

VCCP2

AGNDX

VCCX

D+

D−

MUTE/

Power Down

C1

11

12

13

14

AGNDC

VINL

VINR

VCOM

18

17

16

15

VCCP1

VOUTL

VOUTR

AGNDP

22

Ω

22

Ω

VDD (3.3 V)

1.5 k

Ω x 3

IC1

1.5 k

Ω

GND

VBUS

1 M

Ω

C2

C9

C10

VCC (3.3 V)

1 M

Ω

12 MHz

C5

C6

C3

C4

C7

C8

C11

C12

LPF,

Amp

LPF,

Amp

Figure 41. Self-Powered Configuration