ASR8600 Datasheet, PDF (2/14 Pages) AMIC Technology – Ambient Light, Solar-UV, IR and Proximity Sensor

ASR8600
Preliminary
Ambient Light, Solar-UV, IR and Proximity Sensor
with I2C digital interface
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.
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
Applications
„ Notebook / Monitor
„ Smart phone (touch screen disable and backlight control)
„ LCD display (backlight control)
„ Table PC
„ PDA
„ Presence Detection
„ Industrial sensor
Pin Assignment
1 - VDD
6 - SDA
2 - GND
5 - SCL
3 - LDR
4 - INT
1
VDD Power
4
2
Ground
5
3 LED Driving Port 6
Interrupt
I2C Clock
I2C Data
Ordering Information
Part Number Temp. Range
ASR8600
-40°C ~ +85°C
Package & Size
6pin OCDFN (2mm x 2.5mm x 0.8mm)
Packing
Tape and Reel
Lead-Free/RoHS
Compliant
PRELIMINARY (March, 2015, Version 0.0)
1
AMIC Technology Corp.