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PixArt Imaging Confidential

PMW3320DB-TYDU-DS-R3.05-250915

Design Considerations for Improved ESD Performance

For improved electrostatic discharge performance, typical

creepage and clearance distance are shown in the table below.

Assumption: base plate construction is as per the PixArt

Imaging supplied IGES file and LM31-LNG lens. Note that the

lens material is polycarbonate or polystyrene HH30. Therefore,

cyanoacrylate based adhesives or other adhesives that may

damage the lens should NOT be used.

LM31-LNG

Typical Distance (mm)

Creepage

15.43

Clearance

7.77

Regulatory Requirements

•

Passes FCC B and worldwide analogous emission limits

when assembled into a mouse with shielded cable and

following PixArt’s recommendations.

•

Passes IEC-1000-4-3 radiated susceptibility level when

assembled into a mouse with shielded cable and following

PixArt’s recommendations.

•

Passes EN61000-4-4/IEC801-4 EFT tests when assembled

into a mouse with shielded cable and following PixArt

recommendations.

•

Provides sufficient ESD creepage/clearance distance to

withstand discharge up to 15KV when assembled into a

mouse according to usage instructions above.

Table 2. Absolute Maximum Ratings

Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.

Parameter

Symbol

Min

Max

Units

Notes

Storage Temperature

-40

85

°C

Operating Temperature

-15

55

°C

Lead Solder Temperature

260

°C

For 7 seconds, 1.6mm below seating plane.

Supply Voltage

-0.5

3.6

V

ESD (Human Body Model)

2

kV

All pins

Input Voltage

-0.5

VDD + 0.5 V

All I/O pins

Table 3. Recommended Operating Conditions

Parameter

Symbol

Min

Typ.

Max

Units

Notes

Operating Temperature

0

40

°C

Power Supply Voltage

2.1

2.2

3.4

V

Power Supply Rise Time

0.15

20

ms

0 to VDD min

Supply Noise (Sinusoidal)

100

mVp-p

10kHz —50MHz

Main Oscillator Frequency

24

MHz

On-chip oscillator

Serial Port Clock Frequency

1

MHz

50% duty cycle

Distance from Lens Reference

Z

2.2

2.4

2.6

mm

Plane to Tracking Surface

580

Hz

Speed

S

ips

Applicable only for gaming mode

Acceleration

A

20

g

In run mode

Load Capacitance

100

pF

SDIO

[1]

Recommend placing the sensor as per Figure 2 at 0 degree to achieve optimum tracking speed.