VT5376 Datasheet, PDF (1/30 Pages) STMicroelectronics – Ultra-low power laser motion sensor for laser mouse applications

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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