PixArt Imaging Inc.
PAW3203DI
Wireless Optical Mouse Single Chip
5. Referencing Application Circuit
5.1 1.8V Application Circuit (with Red LED)
#1. Battery Power Circuit
Optional power source: A or B
A. DC/DC Converter
BAT_1.5V
B. Regulator
BAT_1.5V
BAT_3.0V
VIN PAD
U5
VCC_1.8V
C31
L2 220uH
D3 1N5819
VR1
100K
VR2
ELM9818
VCC_1.8V
R1
VCC_1.8V
Q1
Q1
170K
BAT_3.0V
VCC_1.8V
VOUT
SW
2N3906
2N3906
C30
BatDetect
BatDetect
C32
22uF
C33
R2
47uF
100uF
R7
470K
R8
U1
ELM9318
22uF
100K
100K
100K
A
#2. EEPROM & LED-POWER Circuit
BAT_1.5V
LED_2.7V
D2 1N5819
U3 24AA02
VCC_1.8V
L1 200uH
A0 VCC
WP
VOUT
SW
A1
A2 SCL
VSS SDA
C5
0.1uF
ISCK
ISDA
C3
C4
U2
ELM9327
47uF
47uF
#3. RF TX Circuit
VCC_1.8V
R4 10R
+C11
C8
1uF
C10
+
0.1uF
1uF
RFosc
C6
RFEN
C9
22pF
C13
C12
100pF
Q2
3904
RFDATA
R3 10K
0.1uF
R5
100pF
10K
Q3
3904
RFcarrier
U4
#4. Sensor Circuit
VCC_1.8V
BatDetect
RFU
Z1
Z2
1
2
24
23
22
ENSW1
ZY1
BATLow
RFU
NC
Z1
Z2
Z2
COM
Z1
ZY2
BL
LKEY
B4
3
ENCODER
4
21 MKEY
20 RKEY
19 RFEN
18 RFDATA
B4
BM
LED_2.7V
R6
D1
SW1
SW2
SW3
SW4
SW5
SW6
* SW7
5
LKEY
RKEY
MKEY
B4
LED
BR
C18 10pF
RFcarrier
6
OSCOUT
OSCIN
VDDD
VSS
RFEN
RFDATA
RFID
ISDA
ISCK
NC
X1
7
27.042MHZ
RFosc
RFID
8
17
* C19
+C20
1uF
9
16 ISDA
15 ISCK
14
VCC_1.8V
10
11
12
B5
VDD
VDDA
VREF
RFID
RFU
C21 C22 C23
+
B5
13
+
B5
C24
PAW3203DI
10uF 0.1uF 1uF
0.1uF
Note1: Please reserve C19, SW7 for future use
Figure 6. Application Circuit for 1.8V (with Red LED)
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PixArt Imaging Inc.
7
E-mail: fae_service@pixart.com.tw
V0.3 April. 2008
PIXART [ PIXART IMAGING INC. ]
