|
|
PDF APDS-9930 Data sheet ( Hoja de datos )
| Número de pieza | APDS-9930 | |
| Descripción | Digital Proximity and Ambient Light Sensor | |
| Fabricantes | AVAGO | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de APDS-9930 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
APDS-9930
Digital Proximity and Ambient Light Sensor
Data Sheet
Description
The APDS-9930 provides digital ambient light sensing
(ALS), IR LED and a complete proximity detection system
in a single 8 pin package. The proximity function offers
plug and play detection to 100 mm (without front glass)
thus eliminating the need for factory calibration of the
end equipment or sub-assembly. The proximity detection
feature operates well from bright sunlight to dark rooms.
The wide dynamic range also allows for operation in short
distance detection behind dark glass such as a cell phone.
In addition, an internal state machine provides the ability
to put the device into a low power mode in between
ALS and proximity measurements providing very low
average power consumption. The ALS provides a photopic
response to light intensity in very low light condition or
behind a dark faceplate.
The APDS-9930 is particularly useful for display man-
agement with the purpose of extending battery life and
providing optimum viewing in diverse lighting conditions.
Display panel and keyboard backlighting can account for
up to 30 to 40 percent of total platform power. The ALS
features are ideal for use in notebook PCs, LCD monitors,
flat-panel televisions, and cell phones.
The proximity function is targeted specifically towards
near field proximity applications. In cell phones, the
proximity detection can detect when the user positions
the phone close to their ear. The device is fast enough
to provide proximity information at a high repetition
rate needed when answering a phone call. This provides
both improved “green” power saving capability and the
added security to lock the computer when the user is not
present. The addition of the micro-optics lenses within
the module, provide highly efficient transmission and
reception of infrared energy which lowers overall power
dissipation.
Ordering Information
Part Number
APDS-9930
APDS-9930-140
APDS-9930-200
Packaging
Tape & Reel
Tape & Reel
Tape & Reel
Quantity
2500 per reel
1000 per reel
1000 per reel
Features
ALS, IR LED and Proximity Detector in an Optical Module
• Ambient Light Sensing (ALS)
– Approximates Human Eye Response
– Programmable Interrupt Function with Upper and
Lower Threshold
– Up to 16-Bit Resolution
– High Sensitivity Operates Behind Darkened Glass
– Low Lux Performance at 0.01 lux
• Proximity Detection
– Fully Calibrated to 100 mm Detection
– Integrated IR LED and Synchronous LED Driver
– Eliminates “Factory Calibration” of Prox
• Programmable Wait Timer
– Wait State Power – 90 µA Typical
– Programmable from 2.7 ms to > 8 sec
• I2C Interface Compatible
– Up to 400 kHz (I2C Fast-Mode)
– Dedicated Interrupt Pin
• Sleep Mode Power - 2.2 µA Typical
• Small Package L3.94 x W2.36 x H1.35 mm
Applications
• Cell Phone Backlight Dimming
• Cell Phone Touch-screen Disable
• Notebook/Monitor Security
• Automatic Speakerphone Enable
• Automatic Menu Pop-up
• Digital Camera Eye Sensor
Package Diagram
8 - VDD
7 - SCL
6 - GND
5 - LED A
1 - SDA
2 - INT
3 - LDR
4 - LED K
1 page  
Proximity Characteristics, VDD = 3 V, TA = 25° C, PGAIN = 1, PEN = 1 (unless otherwise noted)
Parameter
Min Typ Max Units Test Conditions
IDD Supply current – LDR Pulse On
3 mA
ADC Conversion Time Step Size
2.58 2.73
2.9 ms
PTIME = 0xff
ADC Number of Integration Steps
1 steps PTIME = 0xff
Full Scale ADC Counts
1023 counts PTIME = 0xff
Proximity IR LED Pulse Count
0
255 pulses
Proximity Pulse Period
16.0 µs
Proximity Pulse – LED On Time
7.3 µs
Proximity LED Drive
100 mA PDRIVE = 0 ISINK Sink current @ 600 mV,
50 PDRIVE = 1 LDR Pin
25 PDRIVE = 2
12.5 PDRIVE = 3
Proximity ADC count value, no object
100 200 counts Dedicated power supply VBatt = 3 V
LED driving 8 pulses, PDRIVE = 00, PGAIN = 10,
open view (no glass) and no reflective object
above the module. [1]
Proximity ADC count value,
100 mm distance object
450 520 590 counts Reflecting object – 73 mm x 83 mm Kodak
90% grey card, 100 mm distance,
LED driving 8 pulses, PDRIVE = 00, PGAIN = 10,
open view (no glass) above the module.
Tested value is the average of 5 consecutive
readings. [1]
Note:
1. 100 mA and 8 pulses are the recommended driving conditions. For other driving conditions, contact Avago Field Sales.
IR LED Characteristics, VDD = 3 V, TA = 25C
Parameter
Min Typ Max Units Test Conditions
Peak Wavelength, λP
850 nm IF = 20 mA
Spectrum Width, Half Power, Δλ
Optical Rise Time, TR
40 nm IF = 20 mA
20 ns IFP = 100 mA
Optical Fall Time, TF
20 ns IFP = 100 mA
Wait Characteristics, VDD = 3 V, TA = 25° C, Gain = 16, WEN = 1 (unless otherwise noted)
Parameter
Min Typ Max Units Test Conditions
Wait Step Size
2.73 2.9 ms
WTIME = 0xff
Wait Number of Step
1 256 steps
5
5 Page 
After the programmed number of proximity pulses have
been generated, the proximity ADC converts and scales
the proximity measurement to a 16-bit value, then stores
the result in two 8-bit proximity data (PDATAx) registers.
ADC scaling is controlled by the proximity ADC conver-
sion time (PTIME) which is programmable from 1 to 256
2.73-ms time units. However, depending on the applica-
tion, scaling the proximity data will equally scale any ac-
cumulated noise. Therefore, in general, it is recommended
to leave PTIME at the default value of one 2.73 ms ADC
conversion time (0xFF).
In many practical proximity applications, a number of
optical system and environmental conditions can produce
an offset in the proximity measurement result. To counter
these effects, a proximity offset (POFFSET) is provided
which allows the proximity data to be shifted positive or
negative.
Once the first proximity cycle has completed, the
proximity valid (PVALID) bit in the Status register will be
set and remain set until the proximity detection function
is disabled (PEN).
Optical Design Considerations
The APDS-9930 simplifies the optical system design by
eliminating the need for light pipes and improves system
optical efficiency by providing apertures and package
shielding which will reduce crosstalk when placed in
the final system. By reducing the IR LED to glass surface
crosstalk, proximity performance is greatly improved
and enables a wide range of cell phone applications
Plastic/Glass Window
APDS-9930
utilizing the APDS-9930. The module package design
has been optimized for minimum package foot print and
short distance proximity of 100 mm typical. The spacing
between the glass surface and package top surface is
critical to controlling the crosstalk. If the package to top
surface spacing gap, window thickness and transmittance
are met, there should be no need to add additional com-
ponents (such as a barrier) between the LED and photo-
diode. Thus with some simple mechanical design imple-
mentations, the APDS-9930 will perform well in the end
equipment system.
APDS-9930 Module Optimized design parameters:
• Window thickness, t ≤ 1.0 mm
• Air gap, g ≤ 1.0 mm [1]
• Assuming window IR transmittance 90%
Note:
1. Applications with an air gap from 0.5 mm to 1.0 mm are recommended
to use Poffset Register (0x1E) in their factory calibration.
The APDS-9930 is available in a low profile package that
contains optics that provide optical gain on both the
LED and the sensor side of the package. The device has
a package Z height of 1.35 mm and will support an air
gap of ≤ 1.0 mm between the glass and the package. The
assumption of the optical system level design is that glass
surface above the module is ≤ 1.0 mm.
By integrating the micro-optics in the package, the IR
energy emitted can be reduced thus conserving the
precious battery life in the application.
The system designer can optimize his designs for slim
form factor Z height as well as improve the proximity
sensing, save battery power, and disable the touch screen
in a cellular phone.
Windows Thickness, t
Air Gap, g
Figure 10. Proximity Detection
1100
1000 4P, 100 mA
900
800
6P,100 mA
8P, 100 mA
16P, 100 mA
700
600
500
400
300
200
100
0
0 2 4 6 8 10 12 14 16
Distance (cm)
Figure 11a. PS Output vs. Distance at 100 mA, PGAIN = 10, at various Pulse
Count. No glass in front of the module, 18% Kodak Grey Card.
11
1100
1000
900
800
700
600
500
400
300 4P, 100 mA
200
6P,100 mA
8P, 100 mA
100 16P, 100 mA
0
0 2 4 6 8 10 12 14 16
Distance (cm)
Figure 11b. PS Output vs. Distance at 100 mA, PGAIN = 10, at various Pulse
Count. No glass in front of the module, 90% Kodak Grey Card.
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet APDS-9930.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| APDS-9930 | Digital Proximity and Ambient Light Sensor | AVAGO |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |