ADNS-3090 Datasheet, PDF (8/38 Pages) Pixart Imaging Inc. – High-Performance Optical Mouse Sensor

PixArt Imaging Inc.
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LP2950ACZ-3.3
3 _{Vin Vo} 1
4.7
μF
0.1
μF
GND
2
4.7
μF
0.1
μF
14
Vcc
Vcc
10 _Vpp
16
D+
D+
15
D-
D-
1.3 KΩ
GND
11 _Vreg
P 0.7 ²¹
22
P 0.6
17
GND QA
P 1.7
USB
23
P 0.5
SHLD
18
MCU
Vcc
QB
P 1.5
P 0.4 ²⁴
3 ^{10 KΩ}
P 0.2
240 Ω
P 0.3 ^{4 10 KΩ}
Z LED
Notes:
All capacitors close to chip
24 MHz and 6 MHz close to chip
7 _{P 1.4}
XTALOUT
13
5
P 1.0
L
P 1.2 ⁶
M
P 1.1 ²⁰
R
XTALIN
12
VSS ⁹
6 MHz
(Optional)
Buttons
0.1 μF
0.1
μF
17 15
V DD V _{DD Internal}
16
Image
GND
Sensor
19
GND
3
SCLK
LED_CTRL ⁵
2
MISO
4
MOSI
1
NCS
6
RESET
7
NPD
ADNS-3090
REFB ¹⁴
13
REFC
OSC_IN ¹⁰
20 20
KK
ΩΩ
9
GUARD
8
OSC_OUT
ADNS
2120
Lens
SURFACE
1 KΩ
Vo
HLMP-EG3E
187 Ω
1/8 W
MMBT2222A
2.2
μF
24 MHz
Ceramic Resonator
AVX KBR -24.0-MSA
Murata CSAL24MOX040
11 18 20
OPTP ¹²
Vo 3.3V
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: [e-mail]
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