PAW3501UI Datasheet, PDF (10/14 Pages) Pixart Imaging Inc. – USB OPTICAL MOUSE SENSOR SINGLE CHIP

PixArt Imaging Inc.
PAW3501UI
USB Optical Mouse Sensor Single Chip
6.2 Typical Application for PAW3501UI-PX with Optical Encoder
U1
Z1
VCC_5V
R2 0?
R3 0?
Z2
IRCTL
SW2
BM
VCC_5V
SW3
BL
R4 0?
R5 0?
SW4
B4
VCC_5V
SW5
B5
R6 0?
R7 0?
VCC_5V
R1 D1 LED
1 _Z1
2 _Z2
3
SR
4 _IRCTL
5 _BM
TEST ²⁴
RFU ^{23 RFU}
22 ^SW1
BR
D- ^{21 D-}
R8
D+ ^{20 D+}
R9
BR
1M
1M
6
BL
7 _DT
8 _B4
9
B5
10 _CPI
19
OSCOUT
OSCIN ¹⁸
VDDQ ¹⁷
16
VSS
VDD5V ¹⁵
X1
18.000MHZ
VDDQ
+ ^C1
1uf
VCC_5V
11 _VSSLED
12
LED
VREFA ¹⁴
13
VREFB
PAW3501UI-PX
C4
+
C5 _1uF
0.1uF
C3
0.1uF
C2
+
10uF
VCC_5V
IRCTL
Q1
2N3906
PIN3(SR):
PULL LOW => -90 degree
PULL HIGH => +90 degree
FLOATING => 0 degree
PIN7(DT)
PULL LOW => 3D3B
PULL HIGH => 2D2B
FLOATING => 3D5B
PIN10(CPI)
PULL LOW => 800CPI
PULL HIGH => 600CPI
FLOATING => 400CPI
D1
U2
IR
PT
Z1
Z2
RFU
D-
D+
VCC_5V
J1
1
2
3
4
5
USB CABLE
R10
R11 R12
470
5.1K 5.1K
Note:
1. Please connect the RFU pin to USB connector shell for future use,
PAW3501UP used the pin to switch USB or PS/2.
2. For resistor value selection, refer to high or low input
level of Z1 and Z2 in the D.C. Electrical Characteristics table.
The recommended value for R10 is 470ohm.
The recommended value for R11/R12 is 5.1Kohm.
Figure 7. Application Circuit for PAW3501UI-PX (Optical Encoder)
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10
PixArt Imaging Inc.
E-mail: [e-mail]
V2.1 April. 2008