PixArt Imaging Inc.
PAN3401
PS/2 Optical Mouse Single Chip
9. Referencing Application Circuit
*Y1 OPEN
U1
VDD_5V_10R
VDD_5V
*R3
OPEN
BL
*1
1
2
3
4
5
6
*14
12
11
10
9
ENSW1
Z1
NC
NC
Z1
VDD_5V
R1 D1
BL
LED
COM
LED
Z2
Z2
*R2 OPEN
C5
C2
JP1
1
BM
BR
+
VCC
GND
DATA
CLK
OSC_RES
VSS
BM
*C4 OPEN
0.1uF 10uF
BR
2
3
4
VDD_5V
VDD_5V_10R
R4
R5
SHORT
SHORT
8
VDD5V
VREF
DATA
CLOCK
R6 10 ohm
7
C1
C3
C6
C7
+
PAN3401
0.1uF 1uF
27pF 27pF
Note:
1. *R2 is left for PAN3401 RC oscillator
2. *C4 , *R3 and *Y1 is left for PAN3502 with USB interface
2. PS/2 connector JP1 is suggested to has the pin sequence like this:
VCC, GND, DATA, CLK.
3. R4, R5, C6, C7 are for EMC immunity
Warning:
If PCBA has dual layout for PAN3401 and PAN3502, please DON'T mount
PAN3401 in PAN3502's pin pads *1 and *14
Figure 9. Application Circuit for PAN3401
10. Recommended Value for R1
z
Radiometric intensity of LED
Bin limits (mW/Sr at 20mA)
LED Bin Grade
Min.
14.7
17.7
21.2
Typ.
Max.
17.7
21.2
25.4
N
P
-
-
-
Q
Note: Tolerance for each bin will be ± 15%
z
R1 value (ohm), VDD = 5.0V (refer to Figure 9)
LED Bin Grade
Min.
Typ.
56
Max.
N
P
43
43
43
-
-
-
56
Q
56
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PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
12
V1.3, Mar. 2008
PIXART [ PIXART IMAGING INC. ]
