ADNS-8020

Data Sheet

Description

The ADNS-8020 is the Track-on-Glass Laser navigationsensor empowered by PixArt Imaging that enablesnavigation on all surface types including glass. It is capable of sensing mouse motion with velocities up to 30 inches per second (ips) on non-glass surfaces, 10 inches per second (ips) on glass and acceleration up to 8g.

The ADNS-8020 has dual power supplies of 1.8V and 3.0V, which enables wireless application to lengthen battery life. It integrates both sensor and VCSEL chips in a single 16-pin molded lead-frame DIP package. It is designed to be used with ADNS-8100-002 lens to form a complete la-ser illuminated navigation system. These parts provide a complete and compact navigation system without mov-ing parts and laser calibration process is NOT required in the complete mouse form, thus facilitating high volume assembly. Performance is not guaranteed if the ADNS-8020 sensor is paired with a lens other than the ADNS-8100-002. Additionally, performance is not guaranteed if the ADNS-8100-002 lens is used in conjunction with a dif-ferent navigation sensor other than the ADNS-8020.

Theory of Operation

The sensor is based on Track-on-Glass and Laser technologies, which measure changes in position by op-tically acquiring sequential surface images (frames) and mathematically determining the direction and magnitude of movement. It contains an Image Acquisition System (IAS), a Digital Signal Processor (DSP), and a four wire se-rial port. The IAS acquires microscopic surface images via the lens and illumination system provided by the VCSEL. 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 mi-crocontroller reads the Δx and Δy data information from the sensor serial port, then translates the data into USB or RF signals before sending them to the host PC or game console.

Features

Track on Glass and Laser technologies

16-pin molded lead-frame DIP package with integrated VCSEL

Dual power operation, 1.8V and 3V

High speed motion detection up to 30ips on non-glass surfaces and 10ips on glass surface, and acceleration up to 8g

Enhanced SmartSpeed self-adjusting frame rate for optimum performance

Motion detect pin output

16-bit motion data registers

Internal oscillator – no resonator nor crystal needed

Programmable resolution up to 1600cpi

Four wire serial port

Programmable rest downshift and rest period times

Minimal number of passive components

Compliance to IEC/EN 60825-1 Eye Safety

Class 1 laser power output level

On-chip laser fault detect circuitry

Advanced technology 832-865 nm wavelength VCSEL

Single-mode lasing operation

Applications

Wired and Wireless Laser Mice

Optical trackballs

NOTE: The ADNS-8020 will be referred as “sensor” and

the ADNS-8100-002 as “lens” hereafter.

All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.

PixArt Imaging Inc. E-mail: fae_service@pixart.com.tw

Track-on-Glass Laser Sensor

1

2

Pinout

Pin Name Description

1 -VCSEL Negative terminal of VCSEL

2 XY_LASER Laser driver output

3 NC No Connection

4 NCS Chip select (Active Low Input)

5 MISO Serial data output (Master In/Slave Out)

6 SCLK Serial clock input

7 MOSI Serial data input (Master Out/Slave In)

8 MOTION Motion Detect (Active Low Output)

9 VDDIO IO Voltage input (1.65-3.3V)

10 DGND Digital Ground

11 VDD18 1.8V Input

12 VDD3 3V Input

13 AGND Analog Ground

14 VDD3 3V Input

15 LASER_NEN Laser enable (Active Low Output)

16 +VCSEL Positive terminal of VCSEL

Figure 1. Device pin-out

Item Marking Remarks

Product Number A8020

Date Code XYYWWZV X = Subcon CodeYYWW = Date CodeZ = Sensor Die SourceV = VCSEL Die Source

Lot Code VVV Numeric

Lot Code

Pin 1

Pin 9

Pin 16

Pin 8

Date

Code

Product

Number

All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.

PixArt Imaging Inc. E-mail: fae_service@pixart.com.tw

PixArt Imaging Inc.

Track-on-Glass Laser Sensor

3

Figure 2. Package outline drawing

NOTES:

1.0 Dimension in millimeters / inches

2.0 Linear dimension general tolerance: ± 0.10mm unless specifi ed otherwise

3.0 Bracket in bracket () is for reference only

4.0 Maximum fl ash: 0.20mm

5.0 Lead pitch tolerance: ± 0.15mm

6.0 Angular tolerance: ± 3.0°

7.0 Coplanarity of lead: 0.10mm

PixArt Imaging Inc.

Track-on-Glass Laser Sensor

All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.

PixArt Imaging Inc. E-mail: fae_service@pixart.com.tw

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PixArt Imaging Inc.

Track-on-Glass Laser Sensor

All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.

PixArt Imaging Inc. E-mail: fae_service@pixart.com.tw

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Absolute Maximum Ratings

Parameter Symbol Min. Max. Units Notes

Storage Temperature TS -40 85 C

Lead-Free Solder Temperature

260 C For 7 seconds, 1.8mm below seating plane. Refer to wave soldering profi le in PCB Assembly & Sol-dering Considerations Application Note AN-5023.

Power Supply Voltage VDD3 -0.5 3.4 Volts

VDD1.8 -0.5 2.1 Volts

VDDIO -0.5 3.4 Volts

ESD (Human Body Model) ESD 2 kV All Pins

Input Voltage VIN -0.5 VDDIO +0.5 Volts All I/O Pins

Laser Output Power LOPMAX 716 μW Class 1 Eye Safety AEL limit

VCSEL forward current If 7 mA

Notes: 1. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are the stress ratings

only and functional operation of the device at these or any other condition beyond those indicated for extended period of time may aff ect device reliability.

2. The inherent design of this component causes it to be sensitive to electrostatic discharge. The ESD threshold is listed above. To prevent ESD-induced damage, take adequate ESD precautions when handling this product.

Recommended Operating Conditions

Parameter Symbol Min. Typ. Max. Units Notes

Operating Temperature TA 0 40 C

Power Supply Voltage VDD3 2. 8 3.0 3.3 Volts Including noise. If operate outside the range, there is neither assurance of any function nor assurance of any parametric limits except for IDD ramp.

VDD1.8 1.7 1.8 2 Volts

VDDIO 1.65 3.3 Volts

Power Supply Rise Time VRT3 0.25 1000 ms 0 to 3.0V

Supply Noise (Sinusoidal) VNA 100 mVp-p 10kHz-50MHz

Serial Port Clock Frequency fSCLK 2 MHz Active drive, 50% duty cycle

Distance From Lens Reference Plane To Navigation Surface

Z_REF 2.2 2.4 2.6 mm Refer to Figure 3

Distance from Lens Lowest Point to Navigation Surface

Z_LP 2.2 mm Refer to Figure 3

Speed S 3010

ips ips

Non-glass surfacesReference glass of min 5mm thickness

Acceleration A 8 g

Load Capacitance Cload 100 pF MOTION, MISO

VCSEL Peak Wavelength λ 832 865 nm

Note: This sensor is designed to work on glass with a thickness of at least 5mm. Most glass surfaces provide enough microscopic features to allow tracking. It will not work on glass that is perfectly clean and virtually scratch-free.The minimum requirements for the sensor to work reliably on glass is there must be at least 50 features/mm2 at the minimum of 6 μm width and 2 μm depth.

PixArt Imaging Inc.

Track-on-Glass Laser Sensor

All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.

PixArt Imaging Inc. E-mail: fae_service@pixart.com.tw

9

DC Electrical Specifi cations

Electrical Characteristics over recommended operating conditions. (Typical values at 25 °C, VDD3=3.0 V, VDD1.8 = 1.8 V, VDDIO= 1.8V), on white paper with laser pre calibrated values.

Parameter Symbol Min. Typ. Max. Units Notes

VDD3 DC Supply Current

IDD3_RUN_NG 0.8 mA Average current of VDD3 includes lasercurrent on:IDD3_XXX_NG: Non-glass surfaces

IDD3_XXX_G: Glass reference surface

No load on MISO, MOTION

IDD3_RUN_G 4.6 mA

IDD3_REST1_NG 65 uA

IDD3_REST1_G 295 uA

IDD3_REST2_NG 20 uA

IDD3_REST2_G 65 uA

IDD3_REST3_NG 9 uA

IDD3_REST3_G 17 uA

VDD1.8 DCSupply Current

IDD1.8_RUN_NG 3.2 mA Average current of VDD1.8 on:

IDD1.8_XXX_NG: Non-glass surfaces

IDD1.8_XXX_G: Glass reference surface

No load on MISO, MOTION

IDD1.8_RUN_G 4.2 mA

IDD1.8_REST1_NG 205 uA

IDD1.8_REST1_G 250 uA

IDD1.8_REST2_NG 50 uA

IDD1.8_REST2_G 55 uA

IDD1.8_REST3_NG 15 uA

IDD1.8_REST3_G 16 uA

VDD3 DC Supply Current for Fast Frame Mode

IDD3_FF 2.3 mA Highly refl ective surfaces (White tile & Glossy Formica) and Glossy Magazine. For typical rest mode current consump-tion refer to non glass mode.VDD1.8 DC Supply

Current for Fast Frame Mode

IDD1.8_FF 9.6 mA

ShutdownSupply Current

IDD3_STDWN 6 25 uA NCS, SCLK, MOSI = VDDIOMISO = GNDIDD1.8_STDWN 8 65 uA

Input Low Voltage VIL 0.3*VDDIO V SCLK, MOSI, NCS

Input High Voltage VIH 0.7*VDDIO V SCLK, MOSI, NCS

Input Hysteresis VI_HYS 100 mV SCLK, MOSI, NCS

Input Leakage Current Ileak 1 10 A Vin = 0.7*VDDIO , SCLK, MOSI, NCS

Output Low Voltage,MISO, MOTION

VOL 0.3*VDDIO V Iout=1mA, MISO, MOTION

Output High Voltage MISO, MOTION

VOH 0.7*VDDIO V Iout=-1mA, MISO, MOTION

Output Low Voltage, LASER_NEN

VOL 0.3*VDD3 V Iout= 1mA, LASER_NEN

Output High Voltage, LASER_NEN

VOH 0.7*VDD3 V Iout= -0.5mA, LASER_NEN

Input Capacitance Cin 10 pF MOSI, NCS, SCLK

PixArt Imaging Inc.

Track-on-Glass Laser Sensor

All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. PixArt Imaging Inc.

E-mail: fae_service@pixart.com.tw

10

Registers Summary

The sensor registers are accessible via the serial port. The registers are used to read motion data and status as well as to set the device confi guration.

Address Register (Before SROM download) Access (Read = R, Write = W or Read/Write = R/W) Reset Value

0x00 Product_ID R 0x3a0x01 Revision_ID R 0x020x02 MOTION R 0x020x03 Delta_X_L R 0x000x04 Delta_X_H R 0x000x05 Delta_Y_L R 0x000x06 Delta_Y_H R 0x000x07 SQUAL R 0x000x08 Pixel_Sum R 0x000x09 Maximum_Pixel R 0x000x0a Minimum_Pixel R 0x000x0b Shutter_Lower R Undefi ned0x0c Shutter_Upper R Undefi ned0x0d – 0x0e Reserved0x0f Confi guration_I R/W 0x0a0x10 Confi guration_II R/W 0x280x11 Reserved0x12 Frame_Capture R/W 0x000x13 SROM_Enable W Undefi ned0x14 Run_Downshift R/W 0x7d0x15 Rest1_Rate R/W 0x010x16 Rest1_Downshift R/W 0x7d0x17 Rest2_Rate R/W 0x090x18 Rest2_Downshift R/W 0x5e0x19 Rest3_Rate R/W 0x310x1a – 0x1f Reserved0x20 LASER_CTRL0 R/W Undefi ned0x21 LASER_CTRL1 R/W Undefi ned0x22 LP_CFG0 R/W Undefi ned0x23 LP_CFG1 R/W Undefi ned0x24 Observation R/W 0x000x25 Data_Out_Lower R Undefi ned0x26 Data_Out_Upper R Undefi ned0x27- 0x29 Reserved0x2a SROM_ID R 0x000x2b - 0x39 Reserved0x3a Power_Up_Reset W Undefi ned0x3b Shutdown W Undefi ned0x3c - 0x3e Reserved0x3f Inverse_Product_ID R 0xc50x40 - 0x4f Reserved0x50 Motion_Burst R 0x000x51-0x61 Reserved0x62 SROM_Load_Burst W Undefi ned0x63 Reserved0x64 Pixel_Burst R 0x00

PixArt Imaging Inc.

Track-on-Glass Laser Sensor

All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. PixArt Imaging Inc.

E-mail: fae_service@pixart.com.tw