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PDF ASR8800 Data sheet ( Hoja de datos )
| Número de pieza | ASR8800 | |
| Descripción | IR and Proximity Sensor | |
| Fabricantes | AMIC | |
| Logotipo |  |
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ASR8800
Ambient Light, Solar_UV_Index, IR and Proximity Sensor
Preliminary
with VCSEL Laser Diode Embedded and I2C digital interface
General Description
The ASR8800 is an integrated sensor of ambient light (ALS),
Infrared light (IR), Solar_UV_Index (SUVI), and proximity
sensing (PS) with an IR VCSEL LD (Laser Diode) embedded.
It provides innovative algorithms which can be friendly in
application. ASR8800 is a perfect solution for light and PS
sensing.
ASR8800 ALS/IR sensing offers ASC (Auto Scale Control)
mode other than traditional manual mode. With ASC mode,
ASR8800 can automatically adjust the sensing time and gain
value to the best resolution according to various light
intensity. User just simply needs to read the measured light
data in accuracy without any other setting. The ASC output
data is in dynamic range of 16 bits with 12 bits resolution.
And under high intensity mode sensing (AI_H mode), the
sensing intensity range can be up to 400K lux. The
Solar_UV_Index is sensing by 8 bits output without any
manual mode option.
ASR8800 has an IR LD (Laser Diode) internally built in to do
PS sensing and detects the presence of nearby object to
avoid any physical contact. The driving current and pulse
time of LD is widely optional according to the distance to be
detected.
To cancel the PS optical crosstalk from overlay reflection,
ASR8800 offers a PS Offset cancellation function to easily
cancel system internal reflection. After this cancellation,
ASR8800 still keeps full dynamic range of PS output with 8
bits (256 steps) resolution, and user has no need to modify
the PS threshold setting.
ASR8800 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_Index, 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 model with 16 bits dynamic range
- Dynamic rang up to 400K lux under high intensity mode
- Programmable high/low threshold interrupt
Solar_UV_Index Sensing
- CIE Erythemal Action Spectrum weighted
- 11 indexes calculated by 8 bits dynamic output data
Proximity Sensing (PS)
- IR VCSEL LD (Laser Diode) embedded
- LD driving current 2.5/5/10/15 mA
- Changeable PS pulse time from 0.05ms to 6.4ms
- 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 is capable for overlay correction
I2C digital Interface up to 400KHz with Interrupt Pin
Wait-time range from 0 to 7 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 IALS~17uA, IPS+LD~40uA
Package option
- 8-pin OCDFN (3.2mm x 4.2mm x 1.1mm)
- 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
8 - VDD
7 - SCL
6 - GND
5 - LDA
Ordering Information
Part Number Temp. Range
ASR8800
-40°C ~ +85°C
8 VDD Power 1
7 I2C Clock 2
6 Ground 3
5 LD Anode (+) 4
Package & Size
8-pin (3.2mm x 4.2mm x 1.1mm)
Packing
Tape and Reel
(3,000/reel)
1 - SDA
2 - INT
3 - LDR
4 - LDK
I2C Data
Interrupt
LD Driving Port
LD Cathode ( - )
Lead-Free/RoHS
Compliant
PRELIMINARY (September 2016, Version 0.2)
1
AMIC Technology Corp.
AMIC reserves the right to change products and specifications discussed herein without notice.
1 page | ||
| Páginas | Total 1 Páginas | |
| PDF Descargar | [ Datasheet ASR8800.PDF ] | |
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