</a>LED" title="LED">LED" title="LED">LED驱动器和振荡器,四线串行接口,无源元件熟最少.主要用在有线和无线光学游戏鼠标和跟踪球,综合输入设备和以电池为能源的输入设备.本文介绍了ADNS-3050主要特性, 光学鼠标框图, 2D装配图和装配分解图,以及有线和无线解决方案电路图.

ADNS-3050: Entry-level Gaming Optical Navigation Sensor

The Avago Technologies ADNS-3050 is a small form factor entry-level gaming optical navigation sensor. It is housed in an 8-pin staggered dual in-line package (DIP). It is capable of high-speed motion detection typically at 60ips and acceleration up to 20g; suitable for both wired and wireless gaming navigation system. The low power management in wireless mode can be customized to suit user preferences. In addition, it has an on-chip oscillator and LED driver to minimize external components.

The ADNS-3050 sensor along with the ADNS-5110-001 lens, ADNS-5200 clip, and HLMP-EG3E red LED forms a complete and compact mouse tracking system. There are no moving parts, which translates to high reliability and less maintenance for the end user. Precision optical alignment is not required, thus facilitating high volume assembly.

Theory of Operation

The ADNS-3050 is based on Optical Navigation Technology, which measures changes in position by optically acquiring sequential surface images (frames) and mathematically determining the direction and magnitude of movement. The ADNS-3050 contains an Image Acquisition System (IAS), a Digital Signal Processor (DSP), and a four wire serial port. The IAS acquires microscopic surface images via the lens and illumination system. These images are processed by the DSP to determine the direction and distance of motion. The DSP calculates the ΔX and Δy relative displacement values. An external microcontroller reads and translates the ΔX and Δy information from the sensor serial port into PS2, USB, or RF signals before sending them to the host PC.

ADNS-3050主要特性:

Small Form Factor Package - 8-pin DIP

Operating Voltage: 2.8V-3.0V

High Speed Motion Detection at typical of 60ips and acceleration up to 20g.

Selectable Resolutions up to 2000cpi

Four wire Serial Port Interface

External Interrupt Output for Motion Detection

Internal Oscillator — no clock input needed

On-chip LED driver

Minimal number of passive components

Programmable power-saving modes for selectable wired or wireless application

Customizable response time and downshift time for rest modes

Confi gurable LED operating modes and drive current

ADNS-3050应用:

Wired and Wireless Optical gaming mice and trackballs

Integrated input devices

Battery-powered input devices

图1.ADNS-3050 2D装配图(顶和侧视图)

图2.ADNS-3050 装配分解图

图3.ADNS-3050 光学鼠标框图

图4.ADNS-3050和带 HLMP-EG3E 红光LED  MCU接口的有线解决方案电路图

图4.ADNS-3050和带 HLMP-EG3E 红光LED  MCU接口的无线解决方案电路图
详情请见:
http://www.avagotech.com/docs/AV02-2886E