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PDF APDS-9190 Data sheet ( Hoja de datos )
| Número de pieza | APDS-9190 | |
| Descripción | Digital Proximity Sensor | |
| Fabricantes | AVAGO | |
| Logotipo |  |
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APDS-9190
Digital Proximity Sensor
Data Sheet
Description
The APDS-9190 provides IR LED and a complete digital
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.
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-9190
Packaging
Tape & Reel
Quantity
2500 per reel
Features
• IR LED and Proximity Detector in an Optical Module
• Proximity Detection
– Fully Calibrated to 100 mm Detection
– Integrated IR LED and Synchronous LED Driver
– Eliminates “Factory Calibration” of Prox
– Covers a 2000: 1 Dynamic Range
• Programmable Wait Timer
– Wait State Power – 70 µA Typical
– Programmable from 2.72 ms to > 6 Sec
• I2C Interface Compatible
– Up to 400 kHz (I2C Fast-Mode)
– Dedicated Interrupt Pin
• Sleep Mode Power - 2.5 µA Typical
• Small Package L3.94 x W2.36 x H1.35 mm
Applications
• Cell Phone Touch-screen Disable
• Notebook/Monitor Security
• Automatic Speakerphone Enable
• Automatic Menu Pop-up
• Digital Camera Eye Sensor
8 - VDD
1 - SDA
7 - SCL
2 - SINT
6 - GND
3 - LDR
5 - LED A
4 - LED K
1 page  
Characteristics of the SDA and SCL bus lines, VDD = 3 V, TA = 25° C (unless otherwise noted) †
Standard-mode
Parameter
Symbol
Min. Max.
SCL clock frequency
Hold time (repeated) START condition.
After this period, the first clock pulse is
generated
fSCL
tHD;STA
0
4.0
100
–
LOW period of the SCL clock
tLOW
4.7 –
HIGH period of the SCL clock
Set-up time for a repeated START condition
Data hold time:
Data set-up time
Rise time of both SDA and SCL signals
Fall time of both SDA and SCL signals
Set-up time for STOP condition
Bus free time between a STOP and START condition
tHIGH
4.0 –
tSU;STA 4.7 –
tHD;DAT
0
–
tSU;DAT 250 –
tr 20 1000
tf 20 300
tSU;STO 4.0 –
tBUF 4.7 –
Capacitive load for each bus line
Cb – 400
Noise margin at the LOW level for each connected device VnL
(including hysteresis)
0.1 VBUS –
Noise margin at the HIGH level for each connected device VnH
(including hysteresis)
0.2 VBUS –
† Specified by design and characterization; not production tested.
Fast-mode
Min. Max.
0 400
0.6 –
1.3
0.6
0.6
0
100
20
20
0.6
1.3
–
0.1 VBUS
–
–
–
–
–
300
300
–
–
400
–
0.2 VBUS –
Unit
kHz
µs
µs
µs
µs
ns
ns
ns
ns
µs
µs
pF
V
V
SDA
tf
SCL
S
tLOW
tHD;STA
tr tSU;DAT tf
tHD;DAT
tHIGH
tSU;STA
Start Stop
t(LOWSEXT)
SCLACK
SCLACK
SCL t(LOWMEXT)
t(LOWMEXT)
t(LOWMEXT)
SDA
Figure 1. I2C Bus Timing Diagram
tHD;STA
Sr
tSP tr tBUF
tSU;STO
P
S
MSC610
5
5 Page 
BASIC SOFTWARE OPERATION
The following pseudo-code shows how to do basic initialization of the APDS-9190.
uint8 PTIME,WTIME,PPCOUNT;
WTIME = 0xff; // 2.7ms – minimum Wait time
PTIME = 0xff; // 2.7ms – minimum Prox integration time
PPCOUNT = 1; // Minimum prox pulse count
WriteRegData(0, 0); //Disable and Powerdown
WriteRegData (2, PTIME);
WriteRegData (3, WTIME);
WriteRegData (0xe, PPCOUNT);
uint8 PDRIVE, PDIODE, PGAIN, AGAIN;
PDRIVE = 0; //100mA of LED Power
PDIODE = 0x20; // Ch1 Diode
PGAIN = 0; //1x Prox gain
WriteRegData (0xf, PDRIVE | PDIODE | PGAIN | AGAIN);
uint8 WEN, PEN, PON;
WEN = 8; // Enable Wait
PEN = 4; // Enable Prox
PON = 1; // Enable Power On
WriteRegData (0, WEN | PEN | PON); // WriteRegData(0,0x0f );
Wait(12); //Wait for 12 ms
int Prox_data;
Prox_data = Read_Word(0x18);
WriteRegData(uint8 reg, uint8 data)
{
m_I2CBus.WriteI2C(0x39, 0x80 | reg, 1, &data);
}
uint16 Read_Word(uint8 reg);
{
uint8 barr[2];
m_I2CBus.ReadI2C(0x39, 0xA0 | reg, 2, ref barr);
return (uint16)(barr[0] + 256 * barr[1]);
11
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet APDS-9190.PDF ] | |
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