STV-376-E01(2008) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STV-376-E01
(Rev.:2008)

Ultra-low power laser motion sensor for laser mouse applications

STMicroelectronics 

VT5376

Ultra-low power laser motion sensor for laser mouse applications

Preliminary Data

Features

■ Ultra-low power performance and high

speed/high accuracy motion detection

(1 m/s, 20 g)

■ Optional on-chip power management scheme

(RUN/IDLE1/IDLE2/SLEEP)

■ On-chip boost-converter controller enables a

complete autonomous single AA/AAA-type

battery supply application

■ Very low quiescent and operating current mode

for battery life saving

■ I2C interface, with fast polling rate capability for

high end applications

(report rate up to 1 per ms)

■ Internal oscillator

■ CPI programmable up to 3200 CPI

■ On-chip ADC for battery level reporting

■ Laser drive circuitry, fault detection scheme

and safety features

■ Versatile usage: the sensor is designed to

operate with a companion microcontroller, and

can be used for any laser/LED mouse system

although it is optimized for wireless

applications (27 MHz/2.4 GHz/BT).

■ RoHS (lead-free) package

Figure 1. Application block diagram

Single battery

VTOP

(>=2.2V)

AVDD DVDD VREG VBat

VREF

VGATE Start

VGATE On

VT5376

VTOP

RBIN

RC_OSC

Laser Out

ResetOut

SDA

SCL

Power Down

Motion

Laser NEN

Vtop

Vtop

MCU

RF module

/ USB

Buttons

Scroll Wheel

Tilt Wheel

Applications

■ Ultra-low power wireless laser mouse,

27 MHz, 2.4 GHz and Bluetooth

■ Also suitable for laser USB mouse applications

Description

This device is intended to fit into any 2-chip

applications (companion MCU) and offers the

best compromise between application cost,

power and performance.

September 2008

Rev 2

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to

change without notice.

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