ADBS-A320

ADBS-A320 Datasheet

ADBS-A320 Optical Finger Navigation

Part	Datasheet
ADBS-A320	ADBS-A320 (pdf)

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ADBS-A320 Optical Finger Navigation Data Sheet The ADBS-A320 sensor is a small form factor SFF LED illuminated optical finger navigation system. The ADBS-A320 is a low-power optical finger navigation sensor. It has a new, low-power architecture and automatic power management modes, making it ideal for batteryand power-sensitive applications such as mobile phones. The ADBS-A320 is capable of high-speed motion detection up to 15ips. In addition, it has an on-chip oscillator and integrated LED to minimize external components. 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 either a serial peripheral interface or a two wire interface port. It is packaged in a 28 I/O surface mountable package. The ADBS-A320 is designed for use with ADBL-A321 lens. The ADBL-A321 lens is the optical component necessary for proper operation of the sensor. Theory of Operation The ADBS-A320 is based on Optical Finger Navigation OFN Technology, which measures changes in position by optically acquiring sequential surface images frames and mathematically determining the direction and magnitude of movement. The ADBS-A320 contains an Image Acquisition System IAS , a Digital Signal Processor DSP , and a communication system. 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 and relative displacement values. The host reads the and information from the sensor serial port if a motion interrupt is published. The microcontroller then translates the data into cursor navigation, rocker switch, scrolling or other system dependent navigation data. • Low power architecture • Surface mount technology SMT device • Self-adjusting power-saving modes for longer battery life • High speed motion detection up to 15ips • Self-adjusting frame rate for optimum performance • Motion detect pin output • Finger detect pin output • Internal oscillator no clock input needed • Selectable 250, 500, 750, 1000 and 1250 cpi resolution • Dual 2.8V/1.8V or single 2.8V supply options • Selectable Input/Output voltage at 2.8V or 1.8V nominal • Serial peripheral interface SPI or Two wire interface TWI • Integrated chip-on-board LED with wavelength of 870nm • Finger input devices • Mobile devices • Integrated input devices • Battery-powered input device Avago customers purchasing the ADBS-A320 OFN product are eligible to receive a royalty free license to our US patents 6977645, 6621483, 6950094, 6172354 and 7289649, for use in their end products. CAUTION It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation which may be induced by ESD. Pinout of ADBS-A320 Optical Sensor Pin Name Input/Output pin Function 1 GND Ground 2 XY_LED 3 MOTION XY LED driver connection Motion Detect active low output O CMOS output Must connect to LED- see schematics fig 7a,7b Open when not used Default active low signal, can be changed in Motion_Control register 0x1d 4 GPIO 5 VDDIO General Purpose Input / Output for FPD function O CMOS output Voltage supply for I/O Pin indicate Finger Presence Detection, OFN engine 0x60 must be enabled see application note OFN A320 firmware design guide . Open when not used Sets I/O voltage but not for nDREG_EN 6 IO_MOSI_A0 TWI address set or Master Out Slave In 7 IO_CLK

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ADBS-A320 Optical Finger Navigation

Data Sheet

The ADBS-A320 sensor is a small form factor SFF LED illuminated optical finger navigation system.

The ADBS-A320 is a low-power optical finger navigation sensor. It has a new, low-power architecture and automatic power management modes, making it ideal for batteryand power-sensitive applications such as mobile phones.

The ADBS-A320 is capable of high-speed motion detection up to 15ips. In addition, it has an on-chip oscillator and integrated LED to minimize external components.

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 either a serial peripheral interface or a two wire interface port. It is packaged in a 28 I/O surface mountable package.

The ADBS-A320 is designed for use with ADBL-A321 lens. The ADBL-A321 lens is the optical component necessary for proper operation of the sensor.

Theory of Operation

The ADBS-A320 is based on Optical Finger Navigation OFN Technology, which measures changes in position by optically acquiring sequential surface images frames and mathematically determining the direction and magnitude of movement.

The ADBS-A320 contains an Image Acquisition System IAS , a Digital Signal Processor DSP , and a communication system.

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 and relative displacement values.

The host reads the and information from the sensor serial port if a motion interrupt is published. The microcontroller then translates the data into cursor navigation, rocker switch, scrolling or other system dependent navigation data.
• Low power architecture
• Surface mount technology SMT device
• Self-adjusting power-saving modes for longer battery
life
• High speed motion detection up to 15ips
• Self-adjusting frame rate for optimum performance
• Motion detect pin output
• Finger detect pin output
• Internal oscillator no clock input needed
• Selectable 250, 500, 750, 1000 and 1250 cpi resolution
• Dual 2.8V/1.8V or single 2.8V supply options
• Selectable Input/Output voltage at 2.8V or 1.8V
nominal
• Serial peripheral interface SPI or Two wire interface

TWI
• Integrated chip-on-board LED with wavelength of
870nm
• Finger input devices
• Mobile devices
• Integrated input devices
• Battery-powered input device

Avago customers purchasing the ADBS-A320 OFN product are eligible to receive a royalty free license to our US patents 6977645, 6621483, 6950094, 6172354 and 7289649, for use in their end products.

CAUTION It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation which may be induced by ESD.

Pinout of ADBS-A320 Optical Sensor

Pin Name

Input/Output pin

Function
1 GND

Ground
2 XY_LED 3 MOTION

XY LED driver connection

Motion Detect active low output

O CMOS output

Must connect to LED- see schematics fig 7a,7b

Open when not used Default active low signal, can be changed in Motion_Control register 0x1d
4 GPIO 5 VDDIO

General Purpose Input / Output for FPD function

O CMOS output

Voltage supply for I/O

Pin indicate Finger Presence Detection, OFN engine 0x60 must be enabled see application note OFN A320 firmware design guide . Open when not used

Sets I/O voltage but not for nDREG_EN
6 IO_MOSI_A0 TWI address set or Master Out Slave In
7 IO_CLK

More datasheets: 10-45D | 10-47 | 10-45G | 10-40E | 10-40G | 10-40F | 10-45C | 10-44A | 10-45A | 10-73

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Datasheet ID: ADBS-A320 519922