PixArt Imaging Inc.

PAW3203DI

Wireless Optical Mouse Single Chip

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7

PixArt Imaging Inc.

V0.3 April. 2008

5. Referencing Application Circuit

5.1 1.8V Application Circuit (with Red LED)

RFEN

#2. EEPROM & LED-POWER Circuit

Z1

Q3

3904

BAT_1.5V

X1

27.042MHZ

RFID

VCC_1.8V

RFU

U3

24AA02

A0

A1

A2

VSS SDA

SCL

WP

VCC

C24

0.1uF

VIN PAD

U5

ELM9818

BAT_3.0V

Z2

L2

220uH

Note1: Please reserve C19, SW7 for future use

LKEY

RFosc

BatDetect

* C19

VR1

100K

SW3

ISCK

C10

0.1uF

R3 10K

BAT_3.0V

SW6

A

VCC_1.8V

RFcarrier

Optional power source: A or B

#3. RF TX Circuit

RFDATA

C31

100uF

ISDA

+

C23

1uF

R1

170K

C32

22uF

Z1

Z2

Q1

2N3906

ISDA

C30

47uF

Q2

3904

RFU

SW5

VCC_1.8V

B4

C18 10pF

VR2

100K

+

C8

1uF

LKEY

D3

1N5819

A. DC/DC Converter

VCC_1.8V

BAT_1.5V

R4

10R

ISCK

* SW7

R6

U4

PAW3203DI

20

17

23

2

24

15

6

3

21

7

14

16

8

13

1

19

10

22

4

18

9

5

11

12

BR

RFID

RFU

ZY2

BATLow

ISCK

OSCOUT

BL

BM

OSCIN

NC

ISDA

VDDD

B5

ZY1

RFEN

VDD

NC

B4

RFDATA

VSS

LED

VDDA

VREF

C9

0.1uF

Q1

2N3906

RFcarrier

VCC_1.8V

C12

100pF

+

C11

1uF

L1 200uH

C4

47uF

VCC_1.8V

R8

100K

SW2

C6

22pF

RKEY

SW1

RFEN

B5

R5

10K

R7

100K

ENSW1

ENCODER

Z2

Z1

COM

C22

0.1uF

+

C21

10uF

BatDetect

U1

ELM9318

VOUT

SW

B. Regulator

VCC_1.8V

LED_2.7V

MKEY

RFDATA

R2

470K

+

C20

1uF

RFID

D1

LED_2.7V

RFosc

D2

1N5819

VCC_1.8V

BAT_1.5V

B4

SW4

#1. Battery Power Circuit

U2

ELM9327

VOUT

SW

C33

22uF

#4. Sensor Circuit

B5

BatDetect

C5

0.1uF

MKEY

RKEY

C3

47uF

C13

100pF

Figure 6. Application Circuit for 1.8V (with Red LED)