ASR8600

Ambient Light, Solar-UV, IR and Proximity Sensor

Preliminary

with I2C digital interface

PRELIMINARY

(March, 2015, Version 0.0)

1

AMIC Technology Corp.

General Description

The ASR8600 is an integrated sensor of ambient light (ALS),

Infrared light (IR), Solar-UV, and proximity sensing (PS). It

provides innovative algorithms which can be friendly in

application. ASR8600 is a perfect solution in application for

light and PS sensing.

ASR8600 ALS/IR sensing offers ASC (Auto Scale Control)

mode other than traditional manual mode which needs user

to manually set sensing time and gain to get proper

resolution according to light intensity. With ASC mode,

ASR8600 could automatically adjust the sensing time and

gain to the best resolution for various light intensity. User just

needs simply to read the measured light data in accuracy

without any other setting. The ASC output data is in dynamic

range of 16 bits up to 64K lux. The Solar-UV sensing adopts

only ASC mode without manual mode option.

User can combine ASR8600 with LED or LD (Laser Diode)

to do PS sensing, detecting the presence of nearby object to

avoid any physical contact. The spectrum of LED/LD light

source could be IR or Green selected by customer using

user command. The driving current and pulse time of

LED/LD is widely optional according to the distance to be

detected.

To cancel the PS optical crosstalk from overlay reflection,

ASR8600 offers PS Offset cancellation function. The PS

Offset function can cancel the system internal reflection but

still keep full dynamic range of 8 bits (256 steps) of PS

output so that user has no need to modify the PS threshold

setting when applying the PS Offset function.

ASR8600 also offers PS Auto Trim function if user requires a

precise proximity distance to be detected in application. The

PS Auto Trim function can automatically set optimized gain

value in chip according to the distance between the preset

object and chip, and the PS Trim value could be easily read

out through user command, once the trim operation is done.

Applications

Notebook / Monitor

Smart phone (touch screen disable and backlight control)

LCD display (backlight control)

Table PC

PDA

Presence Detection

Industrial sensor

Features

Ambient Light, Solar-UV, IR and Proximity Sensor

Ambient Light (ALS) / IR Sensing

- ALS closes to human-eye response (UV/IR rejection)

- IR detecting spectrum in range of near Infrared

- 12 bits resolution with gain and integration time setting

- ASC mode optional with 16 bits dynamic range

- Detected dynamic rang up to 64K lux

- Programmable high/low threshold interrupt

Solar-UV Sensing

- CIE Erythemal Action Spectrum weighted

- 11 indexes calculated by 16 bits dynamic output data

Proximity Sensing (PS)

- Selectable light source of IR or Green

- Wide range driving current of LED/LD, 2.5mA~300mA

- Changeable PS pulse time from 0.1ms to 1.28ms

- 8 bits effective counts

- Programmable high/low threshold interrupt

- PS Offset to cancel crosstalk without dynamic range loss

- PS Auto Trim function for precise distance detection

User trimming capable for overlay or environment correction

I2C digital Interface up to 400KHz with Interrupt Pin

Wait-time range from 0 to 5 seconds to save power

50/60Hz flicker noise rejection

VDD = 2.5V to 3.6V

Temperature compensation : -40

°C to +85°C

Low Power consumption

Package option

- 6-pin OCDFN (2mm x 2.5mm x 0.8mm)

- All Pb-free (Lead-free) Products are RoHS2.0 Compliant

Pin Assignment

6 - SDA

5 - SCL

4 - INT

1 - VDD

2 - GND

3 - LDR

1

VDD Power

4

Interrupt

2

Ground

5

I2C Clock

3

LED Driving Port

6

I2C Data

Ordering Information

Part Number

Temp. Range

Package & Size

Packing

Lead-Free/RoHS

ASR8600

-40

°C ~ +85°C

6pin OCDFN (2mm x 2.5mm x 0.8mm)

Tape and Reel

Compliant