ADNS-3550

ADNS-3550 Datasheet

ADNS-3550 Low Power LED Integrated Slim Mouse Sensor

Part	Datasheet
ADNS-3550	ADNS-3550 (pdf)

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ADNS-3550 Low Power LED Integrated Slim Mouse Sensor Data Sheet The ADNS-3550 LED optical mouse sensor is a small form factor SFF LED illuminated navigation system. The ADNS-3550 is a low-power optical navigation sensor. It has a new, low-power architecture and automatic power management modes, making it ideal for battery-and power-sensitive applications such as cordless input devices. The ADNS-3550 is capable of high-speed motion detection up to 20 ips and 8g. In addition, it has an onchip oscillator and integrated LED to minimize external components. The ADNS-3550, along with the ADNS-3150-001 lens, form a complete and compact mouse tracking system. There are no moving parts which means high reliability and less maintenance for the end user. In addition, precision optical alignment is not required, facilitating high volume assembly. The sensor is programmed via registers through a fourwire serial port. It is packaged in a 16 I/O surface mountable package. Theory of Operation The ADNS-3550 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-3550 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 Dx and Dy relative displacement values. An external microcontroller reads the Dx and Dy information from the sensor serial port. The microcontroller then translates the data into PS2, USB, or RF signals before sending them to the host PC or game console. • Low power architecture • Small form factor • Surface mount technology SMT device • Self-adjusting power-saving modes for longest battery life • High speed motion detection up to and 8g • Self-adjusting frame rate for optimum performance • Motion detect pin output • Internal oscillator no clock input needed • Selectable 500 and 1000 cpi resolution • Wide operating voltage V nominal • Four wire serial port • Minimal number of passive components • Integrated chip-on-board LED • Optical mice • Optical trackballs • Integrated input devices • Battery-powered input device Pinout of ADNS-3550 Optical Mouse Sensor Pin Name 1 MISO 2 SCLK 3 MOSI 4 MOTION 5 XY_LED 6 LED_GND 7 SHTDWN 8 LED + 9 LED - 10 AVDD 11 GND 12 GND 13 AGND 14 VDD 15 GND 16 NCS Description Serial Data Output Master In/Slave Out Serial Clock Input Serial Data Input Master Out/Slave In Motion Detect Active Low Output LED Control Ground for LED Current Shutdown Active High Input LED Positive Terminal LED Negative Terminal Analog Supply Voltage Ground Analog Ground Supply Voltage Ground Chip Select Active Low Input LED - 9 AVDD 10 GND 11 GND 12 AGND 13 VDD 14 GND 15 NCS 16 Figure 1a. Package outline drawing top view 8 LED + LED + 8 7 SHTDWN 7 6 LED-GND LED-GND 6 5 XY-LED XY-LED 5 4 MOTION 4 3 MOSI MOSI 3 2 SCLK SCLK 2 1 MISO MISO 1 Figure 1b. Package outline drawing bottom view 9 LED - 10 AVDD 11 GND 12 GND 13 AGND 14 VDD 15 GND 16 NCS ± ± ± ± PAD #1 OPTICAL CENTER CL

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ADNS-3550 Low Power LED Integrated Slim Mouse Sensor

Data Sheet

The ADNS-3550 LED optical mouse sensor is a small form factor SFF LED illuminated navigation system.

The ADNS-3550 is a low-power optical navigation sensor. It has a new, low-power architecture and automatic power management modes, making it ideal for battery-and power-sensitive applications such as cordless input devices.

The ADNS-3550 is capable of high-speed motion detection up to 20 ips and 8g. In addition, it has an onchip oscillator and integrated LED to minimize external components.

The ADNS-3550, along with the ADNS-3150-001 lens, form a complete and compact mouse tracking system. There are no moving parts which means high reliability and less maintenance for the end user. In addition, precision optical alignment is not required, facilitating high volume assembly.

The sensor is programmed via registers through a fourwire serial port. It is packaged in a 16 I/O surface mountable package.

Theory of Operation

The ADNS-3550 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-3550 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 Dx and Dy relative displacement values.

An external microcontroller reads the Dx and Dy information from the sensor serial port. The microcontroller then translates the data into PS2, USB, or RF signals before sending them to the host PC or game console.
• Low power architecture
• Small form factor
• Surface mount technology SMT device
• Self-adjusting power-saving modes for longest
battery life
• High speed motion detection up to and 8g
• Self-adjusting frame rate for optimum performance
• Motion detect pin output
• Internal oscillator no clock input needed
• Selectable 500 and 1000 cpi resolution
• Wide operating voltage V nominal
• Four wire serial port
• Minimal number of passive components
• Integrated chip-on-board LED
• Optical mice
• Optical trackballs
• Integrated input devices
• Battery-powered input device

Pinout of ADNS-3550 Optical Mouse Sensor

Pin Name 1 MISO
2 SCLK 3 MOSI 4 MOTION 5 XY_LED 6 LED_GND 7 SHTDWN 8 LED + 9 LED - 10 AVDD 11 GND 12 GND 13 AGND 14 VDD 15 GND 16 NCS

Description Serial Data Output Master In/Slave Out Serial Clock Input Serial Data Input Master Out/Slave In Motion Detect Active Low Output LED Control Ground for LED Current Shutdown Active High Input LED Positive Terminal LED Negative Terminal Analog Supply Voltage Ground Analog Ground Supply Voltage Ground Chip Select Active Low Input

LED - 9 AVDD 10 GND 11 GND 12 AGND 13

VDD 14 GND 15 NCS 16

Figure 1a. Package outline drawing top view
8 LED +

LED + 8
7 SHTDWN 7
6 LED-GND LED-GND 6
5 XY-LED

XY-LED 5
4 MOTION 4
3 MOSI

MOSI 3
2 SCLK

SCLK 2
1 MISO

MISO 1

Figure 1b. Package outline drawing bottom view
9 LED - 10 AVDD 11 GND 12 GND 13 AGND 14 VDD 15 GND 16 NCS
± ±
± ±

PAD #1

OPTICAL CENTER CL

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Datasheet ID: ADNS-3550 519980