PixArt Imaging Inc.
ADNS-3090 High-Performance Optical Mouse Sensor
LP2950ACZ-3.3
0.1 μF
3
1
Vin Vo
0.1
μF
0.1
μF
4.7
μF
GND
2
4.7
μF
Vo
17
15
0.1
ADNS
2120
Lens
μF
14
V DD
V DD
Internal
Image
HLMP-EG3E
Vcc
16
19
10
GND
Sensor
Vcc
Vpp
187 Ω
1/8 W
SURFACE
16
GND
SCLK
D +
D +
D -
1 KΩ
5
LED_CTRL
REFB
15
3
MMBT2222A
21
D -
P 0.7
1.3 KΩ
11
2
4
1
22
23
24
GND
Vreg
P 1.7
P 1.5
P 0.6
P 0.5
P 0.4
MISO
MOSI
NCS
ADNS-3090
17
18
14
GND
Vcc
QA
QB
USB
SHLD
2.2
μF
MCU
13
10 KΩ
10 KΩ
6
7
REFC
3
4
P 0.2
P 0.3
RESET
NPD
240 Ω
10
OSC_IN
9
8
24 MHz
GUARD
7
20
20
P 1.4
Ceramic Resonator
AVX KBR -24.0-MSA
Murata CSAL24MOX040
K
K
5
6
OSC_OUT
Z LED
Ω
Ω
P 1.0
P 1.2
L
Buttons
M
R
12
Vo 3.3V
OPTP
20
9
P 1.1
VSS
11 18
20
XTALOUT
13
XTALIN
12
Notes:
All capacitors close to chip
24 MHz and 6 MHz close to chip
6 MHz
(Optional)
Figure 8. Schematic Diagram for USB, PS/2 mouse application with ADNS-3090
Notes
1. Caps for pins 15 and 17 MUST have trace lengths LESS than 5 mm to nearest ground pin.
2. Pins 15 and 17 caps MUST use pin 16 GND.
3. Pin 9, if used, should not be connected to PCB GND to reduce potential RF emissions.
4. The 0.1 uF caps must be ceramic.
5. Caps should have less than 5 nH of self inductance.
6. Caps should have less than 0.2 Ω ESR.
7. NC pins should not be connected to any traces.
8. Surface mount parts are recommended.
9. Care must be taken when interfacing a 5V microcontroller to the ADNS-3090. Serial port inputs on the sensor should be connected to open-
drain outputs from the microcontroller or use an active drive level shifter. NPD and RESET should be connected to 5V microcontroller outputs
through a resistor divider or other level shifting technique.
10. VDD3 and GND should have low impedance connections to the power supply.
11. Capacitors connected to pin 15 and 17 should be connected to pin 16 and then to pin 19.
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
8
PIXART [ PIXART IMAGING INC. ]
