PLN2020

twin-eye laser sensor

Complete navigation sensor

that works on virtually all

surfaces

Philips Laser Sensors

Introduction

The Philips’ PLN2020 twin-eye laser sensor is a high-

precision, ultra-fast, low-power consuming, small-sized,

single-component, laser-based tracking device for use in

computer mice, identification devices, printers and mobile

phones.

General information

The PLN2020 is a fully integrated single-component,

robust, self-aligning and small-sized (<180 mm

based tracking device. The 11-pin 3.85-mm high twin-eye

laser sensor has a printed circuit board footprint of a mere

6.8 mm x 6.8 mm and incorporates lenses for its two lasers

in the package assembly. Thanks to a dedicated laser

power control scheme, energy use is limited to a minimum

while power management is maximized, making the device

particularly useful for cordless mice.

The PLN2020 is based on laser tracking technology. It

measures changes in position by sensing the scattered

laser light that is reflected by the surface, and

mathematically by on-chip logic and software, determining

the direction and magnitude of the movement. It is capable

of measuring extremely accurately at a wide range of

speeds.

Key features

Design-in simplicity

Complete

single

integrated

component

solution

(System-In-Package)

11-pin miniature square package

Intelligent, built-in, multi-mode power management

system

Low-power operation and sleep modes

Accurate optical navigation

Smooth and rough surface navigation

3D motion sensor

Accurate motion up to 500 mm/s (20 ips) with an

extended motion range up to 1000 mm/s

Micrometer resolution (800 cpi)

Single 3.3 volt power supply

SPI serial bus host interface

High-speed serial port registers for programming and

data transfer

Embedded firmware can be upgraded and customized

Active redundant protection system to ensure laser

safety

Lead-free wave solderable (or by manual soldering)

No mechanical moving parts

Insensitive to wear and tear

The PLN2020 does not require a smooth surface, but can

be used on virtually all light-scattering surfaces, even those

with a relatively rough structure. Compact in dimensions,

the PLN2020 is a true ‘system-in-a-package’ that is

suitable for many applications. As there are no moving

parts, and because of its self-aligning optical path, the

application of the technology is simple and can be mass-

produced in a cost-effective manner without applying

expensive aligning procedures.