SFH-7779 [OSRAM]
Ambient Light and Proximity Sensor with Integrated 940nm IR Emitter;
| 型号： | SFH-7779 |
| 厂家： | 
OSRAM GMBH |
| 描述： | Ambient Light and Proximity Sensor with Integrated 940nm IR Emitter |
| 文件： | 总35页 (文件大小：1069K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
2007-05-23
Ambient Light and Proximity Sensor with Integrated 940nm IR Emitter
Version 1.2
SFH 7779
Features:
•
Proximity sensor (PS)
- Detection range up to 160 mm
- 940 nm IR emitter integrated in package
- Programmable pulse current up to 200 mA
- No separator needed if placed <0.4mm behind glass window, window thickness<1.0 mm
Ambient light sensor (ALS)
•
- detection range 0.0022 - 73000 lx;
- 50Hz/60Hz flicker noise suppression
I2C interface (max. 400kHz)
PS and ALS Interrupt function
Current consumption
•
•
•
- typ. 0.8µA in Standby mode
- typ 90µA for ALS operation
- typ 60µA for PS operation
•
Miniature package 4mm x 2.1mm x 1.35mm
Applications
•
•
•
•
Mobile phones
PDAs- and notebooks
Cameras
Consumer products
Ordering Information
Ordering Code
Type:
SFH 7779
Q65111A4188
2016-04-25
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Version 1.2
SFH 7779
Application diagram
VINT, pullup
VIO
Rp1 Rp2
Rp3
SFH 7779
(5)
(4)
VLED
LED_C LED_A
Phone
Battery
(6)
(7)
(3)
(2)
GND
SCL
LDR
INT
GND
100nF 4.7 uF
V INT
SCL
(8)
(1)
SDA
SDA
VDD
VDD
Voltage
Regulator
1.0 uF
100nF
GND
•
•
Bypass capacitors for VDD and VLED are required for proper operation of the device.
Proposed size for the pull-up resistors Rp1, Rp2 and Rp3 are 10kOhm
Pin description
Pin Name
Function
1
2
3
4
5
6
7
8
VDD
Power supply pin
I²C bus serial clock pin
Ground pin
SCL
GND
LED_A Anode of the LED
LED_C Cathode of the LED
LDR
INT
LED driver pin
Interrupt pin; open drain output; configured via I²C bus
I²C bus serial data pin
SDA
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Version 1.2
SFH 7779
Short Evaluation program
Adress
0x42
Command
0x3F
Action
set LED pulse current to 200mA and ALS gain to x128
0x41
0x06
activate ALS & PS with a measurement repetition time of 100ms
Wait 100ms
0x44
read data
read data
read data
read data
read data
read data
read LSB of proximity measurement data
0x45
read MSB of proximity measurement data
0x46
read LSB of ambient light measurement of VIS diode
read MSB of ambient light measurement of VIS diode
read LSB of ambient light measurement of IR diode
read MSB of ambient light measurement of IR diode
0x47
0x48
0x49
I2C interface
•
•
•
•
I/O-pins are open drain type and logic high level is set with external pull-up resistor
SFH 7779 operates in slave mode. Slave address is 0111001 (0x39h)
Designed for the I2C Fast mode (400 kb/s)
Interrupt pin (INT): open-drain output (like SDA and SCL)
Block diagram
VDD
1
SDA
8
Analog / amplifier
I2C
2 SCL
digital
7
INT
+
ALS
VIS
data-
register
ALS
IR
proximity
LED
4 LED_A
driver
3
6
5
LDR
LED_C
GND
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Version 1.2
SFH 7779
Measurement modes
Mode
Description
OFF
The device is inactive. Other units may use the I2C bus without any restrictions; I/O
pins and INT are in high Z state. There is no sink current through the LED
STAND-BY
This is the initial mode after power-up. IDD is typ. 0.8A. No measurement is
performed. Device can be activated by I2C bus communication. Data registers can
be read and written.
ALS / PS free -
RUNNING
Measurements are triggered internally by the SFH 7779. Stand-by / active mode for
ALS and PS, measurement times, interrupt options and LED current can be adjusted
via I²C register. Measurement results can be read from the data register, the status
from the interrupt register.
OFF
STAND-BY
Proximity Sensor (PS)
free - RUNNING
Ambient Light Sensor (ALS)
free - RUNNING
Proximity Sensor (PS)
and
Ambient Light Sensor (ALS)
free - RUNNING
If VDD exceeds the threshold voltage, the sensor will switch from OFF mode to STAND-BY mode. As
shown in the transition-diagram above it is possible to switch between all modes without any restriction.
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Version 1.2
SFH 7779
Maximum Ratings (TA = 25 °C)
Parameter
Symbol
Tstg
Values
-40 ... 100
-40 ... 85
4.5
Unit
°C
°C
V
Storage temperature range
Operating temperature range
Top
VDD
Maximum supply voltage
(between VDD and GND)
Maximum voltage of SDA, SCL to GND
Maximum voltage of INT to GND
Maximum voltage of VLED to GND
Maximum Current of INT and SDA
Vdig
4.5
7
V
Vint
V
VLED
7
V
IINT / ISDA
7
mA
kV
ESD withstand voltage
(acc. to ANSI / ESDA JEDEC JS-001-HBM)
2
VESD
2016-04-25
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Version 1.2
SFH 7779
Operating conditions (TA = 25 °C)
Parameter
Symbol
Value
min.
2.3
Unit
typ.
max.
3.6
Supply voltage
VDD
2.5
V
Ripple on supply voltage
(VDDmin and VDDmax must stay in the VDD range,
DC ... 100MHz)
VDD,rip
200
mV
VDD threshold voltage
VDD; th
VINT
1.7
2.3
V
(voltage to initiate the start-up procedure)
Voltage for INT
5.5
3.6
V
V
Voltage for SCL and SDA
VSCL
VSDA
1.65
SDA and SCL input low level voltage
SDA and SCL input high level voltage
SDA and SCL input current
VSCL_low
VSDA_low
0.54
V
V
VSCL_high
VSDA_high
1.26
-10
ISCL_low
ISDA_low
10
µA
V
INT output low level voltage (IINT = 3 mA)
(When INT is active: VINT = low
when INT is inactive: VINT = high)
VINT_low
0.4
Supply voltage LED 1)
VLED
2.3
3.5
5.5
V
Ripple VLED
VLED,rip
200
mV
1)2.3 V is only valid for an LED current setting up to 100mA; If the sensor is driven with LED currents
>100mA the VLED voltage should be higher than 3.0V.
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Version 1.2
SFH 7779
Characteristics (TA = 25 °C)
Parameter
Symbol
Value
Unit
min.
typ.
max.
General
Conditions for OFF mode
VDD,off
IDD,off
0.5
0
V
Current consumption in OFF mode
(VDD < 0.5V)
A
STAND-BY mode current consumption
(Mode_control(41h) = 0x00; VDD = 2.5V)
IDD,stby
0.8
1.5
A
Proximity Sensor (PS)
LED centroid wavelength (ILED = 100mA)
LED Spectral bandwidth (ILED = 100mA)
centroid
940
30
nm
nm
%/K
µs
D
Temperature coefficient of optical power of LED TC
-0.5
200
ILED ON time for one measurement
t LED ON
ILED
80
25
300
200
LED current, programmable
mA
V
V
LED> 2.3V for ILED < 100mA
LED> 3.0V for ILED > 100mA
Accuracy of LED current source
ILED
IDD
22.5
25
60
27.5
150
mA
µA
(ALS_PS_CONTROL: LED Current = 00b)
Mean current consumption in PS mode
(current consumption of the pulsed LED is not
included; MODE_CONTROL(0x41h) = 0x03h;
all other registers are default; VDD = 2.5V)
Mean current consumption in PS mode during
the 200µs LED pulse (t LED ON)
(current consumption of the pulsed LED is not
included)
IDD
6.5
10
8.5
mA
cm
Typical detection distance 1)
hon
KODAK grey card 100x130mm², R=90%
(ILED=200mA, VDD=2.5V, Ev = 0lx;
high threshold = 11 counts)
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Version 1.2
SFH 7779
Typical none detection distance 1)
KODAK grey card 100x130mm², R=90%
(ILED=200mA, VDD=2.5V, Ev = 0lx
low threshold = 8 counts)
hoff
12
cm
PS sensor output with human skin reflector
(ILED=200mA, VDD=2.5V, h=0mm: skin directly
on top of the sensor)
PSout
TKPS
850
0.15
counts
%/K
Temperature coefficient of the PS signal
(ILED=200mA, VDD=2.5V, R=90%,
A
Reflector =10x13cm², h=4cm)
1)
Example of PS Hysteresis
The switching distance h is specified from top sensor surface to the reflector.
INT voltage
Reflector:
(Kodak grey card R=90%)
HIGH
LOW
h
h,HYS
SFH 7779
h_on
h_off
Reflector
distance h
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Version 1.2
SFH 7779
Dimensions of proposed optical aperture
(optical aperture: IR transmitting opening in cover glass)
IR Intransparent and Low
Reflective Cover
(deep black)
Cover Glass
Ø Aperture
Ø Aperture
35°
35°
35°
35°
Dd
SFH 7779
pcb
0.45
PS & ALS
Detector
0.9
Emitter
0.675
0.8
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Dimensions in mm
2016-04-25
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Version 1.2
SFH 7779
Characteristics (Ta = 25°C)
Parameter
Symbol
Value
min.
Unit
typ.
560
880
max.
Ambient Light Sensors: ALS VIS and ALS IR diode
Wavelength of max. sensitivity for ALS VIS
Smax
S10%
nm
nm
Spectral range of sensitivity (10% of Smax) of
ALS VIS
450
950
Wavelength of max. sensitivity of ALS IR
Smax
S10%
nm
nm
Spectral range of sensitivity (10% of Smax) of
ALS IR
830
1050
Illuminance measurement range is
programmable
0.0022
73000 lx
(the maximum ALS sensitivity can be reached
with the ALS high sensitivity mode --> 400ms
ALS integration time)
(MODE_CONTROL (0x41h) = 0Ah or 0Bh)
ALS VIS sensor output
ALSVIS_out 750
ALSIR_out 460
900
550
1080
660
counts
(1000lx; white LED; VDD = 2.5V)
((MODE_CONTROL (0x41h) = 08h)
(ALS_PS_CONTROL (0x42h): Gain = X1)
ALS IR sensor output
counts
(324µW/cm²; IRED 850 nm; VDD = 2.5V)
((MODE_CONTROL (0x41h) = 08h)
(ALS_PS_CONTROL (0x42h): Gain = X1)
ALS VIS sensor output at darkness
((MODE_CONTROL (0x41h) = 08h)
(ALS_PS_CONTROL (0x42h): Gain = X1)
ALSVIS_out
ALSIR_out
0
0
0
0
2
2
counts
counts
ALS IR sensor output at darkness
((MODE_CONTROL (0x41h) = 08h)
(ALS_PS_CONTROL (0x42h): Gain = X1)
2016-04-25
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Version 1.2
SFH 7779
Parameter
Symbol
Value
min.
Unit
typ.
max.
Resolution of the digital output signal based on ALSVIS_out
gain settings for ALS VIS:
lx/count
MODE_CONTROL (0x41h) = 08h
t
int ALS = 100ms
Gain X1
1.1
Gain X2
0.55
0.018
0.009
Gain X 64
Gain X 128
High sensitive mode:
MODE_CONTROL (0x41h) = 0Ah
t
int ALS = 400ms
Gain X 128
0.002
0.2
(VDD = 2.5V; white LED)
- Gain settings at ALS_PS_CONTROL (0x42h)
Typical temperature coefficient for ALS
measurement
(1000lx; white LED; VDD = 2.5V)
TCEv
%/K
µA
%
Mean current consumption
IDD
90
150
3
((MODE_CONTROL (0x41h) = 08h)
(other registers are in default)
Typical error by Flicker noise
(caused by bulbs (f=50 or 60Hz) or fluorescent
lamps)
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Version 1.2
SFH 7779
Diagrams for ALS sensor
Relative Spectral Sensitivity of ALS VIS
Srel_VIS = f(λ)
Relative Spectral Sensitivity of ALS IR
Srel_IR = f(λ); 100% = maximum sensitivity of ALS VIS
diode
OHF05606
OHF05597
100
100
%
%
Srel
Srel
80
70
60
50
40
30
20
10
80
70
60
50
40
30
20
10
0
0
400 500 600 700 800 900 nm 1100
400 500 600 700 800 900 nm 1100
λ
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Version 1.2
SFH 7779
ALS VIS sensitivity ranges
ALS VIS output f(Ev); white LED; f(sensitivity settings);
Tint: integration time (register 0x41h); X: gain settings (register 0x42h)
OHF05598
100000
10000
X = 64
Tint = 100 ms
X = 128
1000
100
10
T
int = 100 ms
X = 2
int = 100 ms
X = 128
T
Tint = 400 ms
X = 1
int = 100 ms
T
1
0.001
0.1
10
1000
lx
100000
EV
Direction Characteristic of ALS Vis diode
Srel f(f))
40˚
30˚
20˚
10˚
0˚
OHF05605
1.0
50˚
0.8
0.6
0.4
60˚
70˚
0.2
0
80˚
90˚
100˚
1.0
0.8
0.6
0.4
0˚
20˚
40˚
60˚
80˚
100˚
120˚
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Version 1.2
SFH 7779
Diagrams for PS sensor
PS sensitivity f(R = reflectivity)
VDD=2.5V; ILED=200mA; Trep=100ms; AReflector = 10 x 13 cm²
1000
s
t
n
u
100
o
c
/
t
u
p
t
u
o
r
o
s
n
e
s
10
S
P
1
0
50
100
150
200
250
distance h / mm
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Version 1.2
SFH 7779
PS sensitivity f(ILED
)
VDD=2.5V; Trep=100ms; R=90%; AReflector = 10 x 13 cm²
1000
s
t
n
u
100
o
c
/
t
u
p
t
u
o
r
o
s
n
e
s
10
S
P
1
0
50
100
150
200
250
distance h / mm
Typical crosstalk free range
VDD=2.5V; ILED=200mA; Trep=100ms; glass without ink and one single IR transmissive opening ;
OHF05599
1.2
mm
1.0
> 1 count
0.8
0.6
0.4
0.2
0
1 count
0 counts
0
0.2
0.4
0.6
0.8
Thickness of coverglass
1
mm
1.2
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Version 1.2
SFH 7779
Typical crosstalk free range
VDD=2.5V; ILED=200mA; Trep=100ms; glass without ink and a two separate IR transmissive openings for
emitter and detector
OHF05609
1.2
> 1 count
mm
1.0
1 count
0.8
0 counts
0.6
0.4
0.2
0
0
0.2
0.4
0.6
0.8
1
mm
1.2
Thickness of coverglass
Note for crosstalk free range: The displayed crosstalk free ranges for a single or two hole IR transmissive opening are
measured with a clear cover.Depending on the used ink the crosstalk level can differ and needs to be measured.OSRAM
OS provides costumer related application support and measurements - please contact your OSRAM OS marketing or
sales partner, if support is required.
As the measurement results show the typical performance of the sensor OSRAM OS recommends to design inn a
additional safety guard in the distance of the cover bottom surface to the top of the sensor of 200µm.
e.g.: for a 0.5mm thick cover window with two holes and an acceptable crosstalk level of 0 counts the distance of the
cover window bottom surface to the top of the sensor should not exceed 0.6mm (typ. it would be 0.8mm)!
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Version 1.2
SFH 7779
Radiation Characteristics of the IR Emitter
Irel f(f)
40˚
30˚
20˚
10˚
0˚
OHF05605
1.0
50˚
0.8
0.6
0.4
60˚
70˚
0.2
0
80˚
90˚
100˚
1.0
0.8
0.6
0.4
0˚
20˚
40˚
60˚
80˚
100˚
120˚
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Version 1.2
SFH 7779
Diagrams for IDD current consumption
Current consumption IDD in standby mode
IDD = f(VDD); Register 0x41= 0x00
Current consumption IDD in PS mode
IDD = f(VDD); Register 0x41= 0x03
OHF05602
OHF05603
4.5
120
µA
µA
IDD
IDD
100
3.5
3.0
2.5
2.0
1.5
80
60
40
20
0
1.0
0.5
2.2
2.5
2.8
3.1
3.4 V 3.7
2.2
2.5
2.8
3.1
3.4
V
3.7
VDD
VDD
Current consumption IDD in ALS mode
IDD = f(VDD); Register 0x41= 0x08
OHF05604
160
µA
IDD
120
100
80
60
40
20
0
2.2
2.5
2.8
3.1
3.4 V 3.7
VDD
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Version 1.2
SFH 7779
Register
SYSTEM_CONTROL register (0x40h)
The SYSTEM_CONTROL register is used to control the software (SW) reset and the interrupt function
(INT). Manufacturer ID and Part ID can be read.
R/W-Register 0x40
Bit
7
6
5
4
3
2
1
0
SW reset
INT reset
Manufacturer
ID
Part ID
(Read only)
(Read only)
default 0 Initial reset is not
started
0 INT pin status is not
initialized
001
001
0 Initial reset is not started 0 INT pin status is not initialized
1 Initial reset started
1 INT pin become inactive
(high impedance )
MODE_CONTROL register (0x41h)
CONTROL of PS and ALS operating modes and time settings.
Repetition time is the time between two separate measurements. Integration time is the duration for one
measurement. ALS high sensitivity modes are 1010 and 1011 with an increased integration time of
400ms. In PS operating mode: „normal mode“ only one PS measurement is performed during one PS
repetition time. In PS operating mode „twice mode“ two independent PS measurement are performed
within one PS repetition time. Both measurements are independent and can trigger the interrupt. This
feature can be used to decrease the interrupt update time if the persistence function (register 0x43h) is
used.
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Version 1.2
SFH 7779
.
R/W-Register 0x41
Bit
7
6
5
4
3
2
1
0
Repetition /
Integration
time
Repetition time
Reserved PS operating mode
ALS
PS
default
0 normal mode
0 normal mode
1 twice mode
0000
standby
standby
standby
standby
standby
standby
standby
standby
10ms
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
40ms
100ms
400ms
100ms / 100ms standby
100ms / 100ms 100ms
100ms / 100ms 400ms
400ms / 100ms standby
400ms / 100ms 100ms
400ms / 400ms standby
400ms / 400ms 400ms
50ms / 50ms
50ms
Rest forbidden
ALS_PS_CONTROL register (0x42h)
ALS and PS Control of set the PS output mode, the ALS gain and the LED current. In the „Infrared DC
level output“ PS mode (bit <6> = 1) the sensor measures the infrared DC ambient level. The proximity
value of the reflected signal is not available in this mode.
R/W-Register 0x42
Bit
7
6
5
4
3
2
1
0
Reserved
(read only)
PS output
ALS Gain for ALS VIS and ALS
IR
LED current
ALS VIS
X1
ALS PS
X1
default
write 0
0 proximity output
0000
11 200mA
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Version 1.2
SFH 7779
R/W-Register 0x42
Bit
7
6
5
4
3
2
1
0
Reserved
(read only)
PS output
ALS Gain for ALS VIS and ALS
IR
LED current
0 proximity output
0000
0100
X1
X2
X1
X1
00 25 mA
1 Infrared DC level
output
01 50 mA
0101
1010
1110
1111
X2
X2
10 100 mA
11 200 mA
X64
X128
X128
X64
X64
X128
rest
forbidden
Persistence Register (0x43h)
Settings for the interrupt activation and of the persistence interrupt function. Persistence function is only
valid for the PS measurements.
R/W-Register 0x43
Bit
7
6
5
4
3
2
1
0
Reserved (read only) Persistence
default 0000
0001 Interrupt status is updated after each measurement
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Version 1.2
SFH 7779
R/W-Register 0x43
Bit
7
6
5
4
3
2
1
0
Reserved (read only) Persistence
0000 Interrupt becomes active after each measurement
(The mode indicates that a PS or ALS measurement has been finished and can
be read via the register. It is independent of the ALS & PS measurement value
and threshold settings)
0001 Interrupt status is updated after each measurement
(The interrupt status is updated independently after each measurement. Active
or Inactive status of the interrupt is depending on the values of the last
measurement in combination with the interrupt settings :“interrupt mode“
(register 0x4Ah) and „thresholds“ register 0c4Ch and following.)
0010 Interrupt status is updated if two consecutive threshold
judgement are the same
(The interrupt status only changes if the interrupt judgement of 2 consecutive
measurement results are the same and different to the current interrupt status.)
0011 ... 1111 Interrupt status is updated if threshold judgement are
the same over consecutive set times (3 .. 15)
(This is the same procedure like in the 0010 persistence mode, but instead of
2 consecutive threshold judgments more are needed (3 to 15 depending on the
setting) to change the interrupt status.)
e.g.:
1010: 10 measurement results in a row need to fulfill the interrupt judgement to
update the interrupt status
PS_DATA_LSBs register (0x44h)
LSB of the PS output.
R-Register 0x44
Bit
7
6
5
4
3
2
1
0
27
26
0
25
0
24
0
23
0
22
0
21
0
20
0
default 0
PS_DATA_MSBs register (0x45h)
MSB of the PS output.
R-Register 0x45
Bit
7
6
5
4
3
2
1
0
not used not used not used not used 211
210
0
29
0
28
0
default
0
0
0
0
0
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Version 1.2
SFH 7779
ALS_VIS_DATA_LSBs register (0x46h)
LSB of the ALS VIS output.
R-Register 0x46
Bit
7
6
5
4
4
4
4
3
3
3
3
2
2
2
2
1
1
1
1
0
27
0
26
0
25
0
24
0
23
0
22
0
21
0
20
default
0
ALS_VIS_DATA_MSBs register (0x47h)
MSB of the ALS VIS output.
R-Register 0x47
Bit
7
6
5
0
215
0
214
0
213
0
212
0
211
0
210
0
29
0
28
default
0
ALS_IR_DATA_LSBs register (0x48h)
LSB of the ALS IR output.
R-Register 0x48
Bit
7
6
5
0
27
0
26
0
25
0
24
0
23
0
22
0
21
0
20
default
0
ALS_IR_DATA_MSBs register (0x49h)
MSB of the ALS IR output.
R-Register 0x49
Bit
7
6
5
0
215
0
214
0
213
0
212
0
211
0
210
0
29
0
28
default
0
2016-04-25
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Version 1.2
SFH 7779
Interrupt function setting register (0x4Ah)
Setting of the interrupt functions.
R/W-Register 0x4A
Bit
7
6
5
4
3
2
1
0
PS INT
status
ALS INT
status
PS INT mode
INT assert
INT latch
INT trigger
(read only) (read only)
0 inactive 0 inactive 00 PS_TH is only
active
0 INT „L“ is stable
0INT is latched 00 inactive
default
0 inactive
1 active
0 inactive
1active
00 PS_TH (PS high
threshold 0x4Bh &
0x4Ch) is only active results is also
interrupt active
0 INT „L“ is stable if
newer measurement until INT
0 INT is latched 00 INT pin is
inactive
register is read
or initialize
01 PS_TH & PS_TL
(PS high & low
1 INT “L“ is de-assert 1INT is updated 01 triggered
and re-assert if
after each
by PS only
threshold) are active
as hysteresis
newer measurement measurement
results is also
interrupt active
10 PS_TH & PS_TL
(PS high & low
10 triggered
by ALS only
threshold) are active
as outside detection
11 forbidden
11 triggered
by PS or ALS
PS INT and ALS INT status (bit <7;6>): Directly after reading the register the interrupt status for PS and
ALS and the INT Pin of the sensor is automatically set back to inactive status independent on the meas-
urement results.
PS INT mode (bit <5;4>): The INT modes are only valid for the PS interrupt function. For description
please see extra chapter „PS INT Modes“ (at the end of the register chapter).
INT assert (bit <3>): Is used to adjust the sensor behaviour to the used micro controller trigger settings.
In case a repeated trigger in low state is needed the INT assert can be set to 1.
INT trigger (bit <2>): defines the source / sources for the interrupt.
INT latched (bit <1>): In latched mode the interrupt status stays active after the first activation. It is only
released by reading the status are performing an interrupt reset.
.
PS_TH_LSBs register (0x4Bh)
LSB for the PS threshold „HIGH“.
R/W-Register 0x4B
Bit
7
6
5
4
3
2
1
0
27
1
26
1
25
1
24
1
23
1
22
1
21
1
20
1
default
2016-04-25
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Version 1.2
SFH 7779
PS_TH_MSBs register (0x4Ch)
MSB for the PS threshold „HIGH“.
R/W-Register 0x4C
Bit
7
6
5
5
5
4
4
4
4
4
3
3
3
3
3
2
2
2
2
2
1
1
1
1
1
0
211
1
210
1
29
1
28
default
0
0
0
0
1
PS_TL_LSBs register (0x4Dh)
LSB for the PS threshold „LOW“.
R/W-Register 0x4D
Bit
7
6
0
27
0
26
0
25
0
24
0
23
0
22
0
21
0
20
default
0
PS_TL_MSBs register (0x4Eh)
MSB for the PS threshold „LOW“.
R/W-Register 0x4E
Bit
7
6
0
211
0
210
0
29
0
28
default
0
0
0
0
0
ALS_VIS_TH_LSBs register (0x4Fh)
LSB for the ALS VIS threshold „HIGH“.
R/W-Register 0x4F
Bit
7
6
5
0
27
1
26
1
25
1
24
1
23
1
22
1
21
1
20
default
1
ALS_VIS_TH_MSBs register (0x50h)
MSB for the ALS VIS threshold „HIGH“.
R/W-Register 0x50
Bit
7
6
5
0
215
1
214
1
213
1
212
1
211
1
210
1
29
1
28
default
1
2016-04-25
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Version 1.2
SFH 7779
ALS_VIS_TL_LSBs register (0x51h)
LSB for the ALS VIS threshold „LOW“.
R/W-Register 0x51
Bit
7
6
5
4
3
2
1
0
27
0
26
0
25
0
24
0
23
0
22
0
21
0
20
default
0
ALS_VIS_TL_MSBs register (0x52h)
MSB for the ALS VIS threshold „LOW“.
R/W-Register 0x52
Bit
7
6
5
4
3
2
1
0
215
0
214
0
213
0
212
0
211
0
210
0
29
0
28
default
0
INT modes
The Interrupt function compares ALS and PS measurement values with the current interrupt threshold
level. PS and ALS VIS Interrupt status is readable via register 0x4Ah or at the INT pin of the sensor.
The Interrupt persistence function is only valid for PS measurements and is defined at register (0x43h).
The INT pin of the SFH 7779 is an open drain output and should be pulled-up to VI/O by an external
resistor. When VDD is supplied to the sensor the INT pin is per default in high ohmic (inactive) state.
The INT status becomes inactive by writing an INT reset command, reading the INT status register or
performing a software reset.
The INT status stays in its last state when the sensor is set to the standby mode. In the INT active state
„low“ the sensor consumes ~25µA extrra current. Therefore OSRAM recommends to set the INT state
to high impedance before setting the sensor in standby mode.
Below the ALS and PS INT modes are described for the unlatched mode. In latched mode the switching
back to the „inactive“ INT state is depending on an interrupt reset or on reading out the INT status reg-
ister.
ALS INT mode:
The ALS VIS threshold levels high (register 0x4Fh & 0x50h) and low (register 0x4Fh & 0x50h)
are only valid for the ALS VIS measurement values. The ALS VIS INT mode is fixed and can not
be adapted via register. The thresholds define a window with the following functionality:
ALS INT is active, if the ALS VIS measurement values are outside the window
ALS INT is inactive, if the ALS VIS measurement results are inside the window.
2016-04-25
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Version 1.2
SFH 7779
PS INT Modes: Bit <5;4> of interrupt function setting register (0x4Ah)
00 PS_TH is active only:
The INT state is active, if the PS measurement result is equal or higher than the set PS_TH high
threshold.
The INT state is inactive, if the PS measurement result is lower than the set PS_TH high thresh-
old.
PS INT active
PS INT inactive
PS signal
PS_TH
01 PS_TH & PS_TL (PS high & low threshold) are active as hysteresis:
PS_TH and PS_TL are working as a hysteresis. If the PS measurement signal is higher than the
PS high threshold (PS_TH) the INT state is switched to active. If the PS measurement signal is
lower than the PS low threshold (PS_TL) the INT state is inactive. If once the interrupt signal
becomes active, the INT status is kept active until the measurement result becomes less than
the PS_TL register value.
PS INT active
PS INT inactive
PS signal
PS_TH
PS_TL
10 PS_TH & PS_TL (PS high & low threshold) are active as outside detection:
In case of “PS outside detection“ mode interrupt signal inactive means that the measurement
result is within the registered threshold level and the interrupt signal active means that the meas-
urement result is out of registered threshold level.
PS INT active
PS INT inactive
PS signal
PS_TH
PS_TL
2016-04-25
27
Version 1.2
SFH 7779
Package Outline
Dimensions in mm.
The emitter is located in the cavity between pad 4 and 5. The orientation of the sensor can be detected
by the asymmetrical channel on the sensor top side.
For optical aperture design please see page 8.
Package:
Chip on Board
Approximate Weight:
15 mg
2016-04-25
28
Version 1.2
SFH 7779
Recommended solder pad design
Dimensions in mm (inch).
Cleaning / Washing
In general, OSRAM Opto Semiconductors does not recommend a wet cleaning process for the
components SFH7779 as the package is not hermetically sealed. Due to the open design, all kind of
cleaning liquids can infiltrate the package and cause a degradation or a complete failure of the LED or
ASIC. It is also recommended to prevent penetration of organic substances from the environment which
could interact with the hot surfaces of the operating chips. Ultrasonic cleaning is generally not
recommended for all types of LEDs (see also the application note "Cleaning of LEDs"). As is standard
for the electronic industry, OSRAM Opto Semiconductors recommends using low-residue or no-clean
solder paste, so that PCB cleaning after soldering is no longer required. In any case, all materials and
methods should be tested beforehand in order to determine whether the component will be damaged in
the process.
2016-04-25
29
Version 1.2
SFH 7779
Reflow Soldering Profile
Product complies to MSL Level 3 acc. to JEDEC J-STD-020D.01
OHA04525
300
˚C
T
250
T
245 ˚C
p
240 ˚C
tP
tL
217 ˚C
200
150
tS
100
50
25 ˚C
0
0
50
100
150
200
250
s
300
t
OHA04612
Pb-Free (SnAgCu) Assembly
Profile Feature
Profil-Charakteristik
Symbol
Symbol
Unit
Einheit
Minimum
Recommendation
Maximum
Ramp-up rate to preheat*)
25 °C to 150 °C
2
3
K/s
Time tS
TSmin to TSmax
Ramp-up rate to peak*)
TSmax to TP
tS
60
100
2
120
s
3
K/s
TL
tL
Liquidus temperature
217
°C
Time above liquidus temperature
Peak temperature
80
100
s
TP
tP
245
20
260
°C
Time within 5 °C of the specified peak
temperature TP - 5 K
10
30
s
3
6
K/s
Ramp-down rate*
TP to 100 °C
480
s
Time
25 °C to TP
All temperatures refer to the center of the package, measured on the top of the component
* slope calculation DT/Dt: Dt max. 5 s; fulfillment for the whole T-range
2016-04-25
30
Version 1.2
SFH 7779
Method of Taping
Dimensions in mm (inch).
2016-04-25
31
Version 1.2
SFH 7779
Tape and Reel
12 mm tape with 2000 pcs. on ∅ 180 mm reel
W1
D0
P0
P2
Label
P1
Direction of unreeling
Direction of unreeling
W2
Leader: min. 400 mm *
Trailer: min. 160 mm *
*) Dimensions acc. to IEC 60286-3; EIA 481-D
OHAY0324
Dimensions in mm
Tape Dimensions [mm]
W
P0
P1
P2
D0
E
F
12 +0.3 / -0.1
4
0.1
4
0.1
2
0.05
1.5 0.1
1.75 0.1
5.5 0.05
Reel Dimensions [mm]
A
W
Nmin
W1
W2max
18.4
180
12
60
12.4 +2
2016-04-25
32
Version 1.2
SFH 7779
Barcode-Product-Label (BPL)
OSRAM Opto
BIN1: XX-XX-X-XXX-X
LX XXXX
Semiconductors
RoHS Compliant
(6P) BATCH NO: 1234567890
ML Temp ST
XXX °C X
X
(1T) LOT NO: 1234567890
(9D) D/C: 1234
Pack: RXX
DEMY XXX
X_X123_1234.1234 X
(X) PROD NO: 123456789(Q)QTY: 9999 (G) GROUP: XX-XX-X-X
OHA04563
Dry Packing Process and Materials
Moisture-sensitive label or print
Barcode label
AM
R
S
O
Humidity indicator
Barcode label
t . a
D o n o t
A v o i d m e t
i f c i r c l e
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Desiccant
OHA00539
Note:
Moisture-sensitive product is packed in a dry bag containing desiccant and a humidity card.
Regarding dry pack you will find further information in the internet. Here you will also find the normative
references like JEDEC.
2016-04-25
33
Version 1.2
SFH 7779
Transportation Packing and Materials
Barcode label
Barcode label
0
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1-
Q-
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Bin1: P-1-20
Bin2:
3:-1-20
Bin Temp
220
240
260
S
Q
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6
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MY
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6
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PACKVAR:
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Packing
Sealing label
OHA02044
Dimensions of transportation box in mm
Width
Length
195
Height
42
195
5
5
5
2016-04-25
34
Version 1.2
SFH 7779
Disclaimer
Language english will prevail in case of any discrepancies or deviations between the two language wordings.
Attention please!
The information describes the type of component and shall not be considered as assured characteristics.
Terms of delivery and rights to change design reserved. Due to technical requirements components may contain
dangerous substances.
For information on the types in question please contact our Sales Organization.?If printed or downloaded, please find
the latest version in the Internet.
Packing
Please use the recycling operators known to you. We can also help you – get in touch with your nearest sales office.
?By agreement we will take packing material back, if it is sorted. You must bear the costs of transport. For packing
material that is returned to us unsorted or which we are not obliged to accept, we shall have to invoice you for any costs
incurred.
Components used in life-support devices or systems must be expressly authorized for such purpose!
Critical components* may only be used in life-support devices** or systems with the express written approval of
OSRAM OS.
*) A critical component is a component used in a life-support device or system whose failure can reasonably be
expected to cause the failure of that life-support device or system, or to affect its safety or the effectiveness of that
device or system.
**) Life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or
maintain and sustain human life. If they fail, it is reasonable to assume that the health and the life of the user may be
endangered.
Glossary
1)
Typical Values: Due to the special conditions of the manufacturing processes of LED and
photodiodes, the typical data or calculated correlations of technical parameters can only reflect
statistical figures. These do not necessarily correspond to the actual parameters of each single
product, which could differ from the typical data and calculated correlations or the typical
characteristic line. If requested, e.g. because of technical improvements, these typ. data will be
changed without any further notice.
Published by OSRAM Opto Semiconductors GmbH
Leibnizstraße 4, D-93055 Regensburg
www.osram-os.com © All Rights Reserved.
2016-04-25
35
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