Design considerations for improving ESD Performance
For improved electrostatic discharge performance, typical
creepage and clearance distance are shown in the table
below. Assumption: base plate construction as per the
Avago Technologies supplied IGES file and ADNS-6130-
001 trim lens (or ADNS-6120 round lens).
Typical Distance
Creepage
Clearance
Millimeters
12.0
2.1
The lens flange can be sealed (i.e. glued) to the base
plate. Note that the lens material is polycarbonate and
therefore, cyanoacrylate based adhesives or other adhe-
sives that may damage the lens should
NOT
be used.
VCSEL PCB
SENSOR
LENS
CLIP
VCSEL
BASE PLATE
PCB
Figure 4. Cross section of PCB assembly
25LC160A 16KBit EEPROM (optional )
R7 100K
1
6
5
2
__
CS
SCLK
SI
S0
VCC
___
WP
____
HLD
GND
8
3
7
4
C5
0.1
C7
4.7
+3.3V
3.3V Regulator
LP2950ACZ-3.3
Vcc
1
Vout
Gnd
Vin
3
C4
0.1
C6
4.7
2
Buttons
SW2
SW1
SW3
middle
right
left
10
9
74VHC125 Level Shifter
5
2
Vcc
C1
0.1
14
Vcc
3
8
4
2
6
7
1
1
3
14
C2
0.1
16
VDD3
18
VDD3
5
20
6
19
P1.0
P1.1
P1.2
P1.3
P1.6
P1.7
*Outputs configured
as open drain if NOT
using level shifter
1
NCS
3
2
4
R9
10 K
4
R10
10 K
7
C2
0.1
C3
0.1
P0 .7*
21
Hi-Z Configuration
SCLK
MISO
GND
GND
17
19
Q2
2N3906
C10 to be as close as
possible to VCSEL
D1
VCSEL
C10
470pF
P 0.6
22
23
24
3
USB Microcontroller
Vcc
USB Port
VBUS
GND
D+
D-
1
2
3
4
R5
1.30K
8
17
P0 .5*
P0 .4*
P0.2
P0.3
ADNS-6010
MOSI
RESET
NPD
N/C
N/C
REFC
11
C8
2.2
R6
2.7K
6
7
R2
20K
5
R1
20K
15
13
REFB
LASER _NEN
XY_LASER
12
20
14
8
9
10
C9
0.1
16
15
D+/SCLK
D-/SDAT
P1.4
P1.5
OSC_IN
GUARD
OSC_OUT
13
11
12
18
Vcc
3
Vcc
1
2
XTALOUT
Vreg
XTALIN/P2.1
GND
9
P0.0
1
P0.1
2
VPP
10
RBIN
X1
Murata
24 MHz
CSALS24MOX53-B0
Optional
Ground
Plane
QA
QB
SW4
ALPS
EC10E
Rbin
Selected to
match laser
R3 20 K
Scroll wheel encoder
R4 20 K
Figure 5. Schematic Diagram for 3-Button Scroll Wheel USB PS/2 Mouse
5
AVAGO [ AVAGO TECHNOLOGIES LIMITED ]
