SFH7770 [OSRAM]
Not for design in automotive and industrial applications;
| 型号： | SFH7770 |
| 厂家： | 
OSRAM GMBH |
| 描述： | Not for design in automotive and industrial applications |
| 文件： | 总22页 (文件大小：243K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Umgebungslicht und Näherungssensorꢀ
Ambient Light and Proximity Sensorꢀ
Lead (Pb) Free Product - RoHS Compliant
SFH 7770
Not for design in automotive and industrial applications
Wesentliche Merkmale
Features
• Näherungssensorꢀ
• Proximity Sensor (PS)ꢀ
- Detektionsbereich bis 100mmꢀ
- Gestenerkennungꢀ
- Ausgänge zum Betrieb von bis zu drei IRꢀ
Emitternꢀ
- Detection-range up to 100mmꢀ
- Gesture recognition possible ꢀ
- Outputs to drive up to three IR emitters ꢀ
- Optimized for 850nm emittersꢀ
- Suppression of ambient lightꢀ
- Optimiert für 850nm Emitterꢀ
- Umgebungslicht-Unterdrückung
• Umgebungslichtsensorꢀ
• Ambient Light Sensor (ALS)ꢀ
- 3lx - 65000lxꢀ
- 3lx - 65000lxꢀ
- Gute Linearitätꢀ
- High linearityꢀ
- Spektrale Empfindlichkeit ähnlich demꢀ
menschlichen Auge
- Spectral sensitivity well matched to the human
eye
• I2C interface ꢀ
• I2C interface ꢀ
- 100kHz / 400kHz und 3.4MHz Modeꢀ
- verschiedene Messmoden programmierbarꢀ
(STAND-BY, TRIGGERED, FREE-RUNNING)
• < 5 PA Stromverbrauch im STAND-BY
• Geringe Abmessungen, 2.8 x 2.8 x 0.9 mm3
- 100kHz / 400kHz and 3.4MHz modeꢀ
- Measurement modes programmable ꢀ
(STAND-BY, TRIGGERED, FREE-RUNNING)
• Current consumption < 5PA in STAND-BY
• Small package size, 2.8 x 2.8 x 0.9 mm3
ꢀ
ꢀ
Anwendungen
Applications
• Mobiltelefone
• PDA’s und Notebooks
• Kameras
• Mobile phones
• PDAs and notebooks
• Cameras
• Consumer Produkteꢀ
• Consumer products
Typꢀ
Bestellnummerꢀ
Type
Ordering Code
SFH 7770
Q65110A9565
2011-09-16
1
SFH 7770
Application diagram and basic informations
VDD=2.8V
VLED=4V
VIO = 1.8V
10 μF
V
Vf2
Vf1
LED 1
f3
LED 2
LED 3
1
2
3
SDA
SCL
9
8
6
100nF
SFH 7770
MCU
INT
5
10
7
4
GND
nc
GND_LED
• The inductivity of the wire from the LED pin (1,2 or 3) to the cathode of the LED needs to be
<20nH at If=200mA (e.g. max 2 – 3cm length of a wire). The cable length may be increased for
lower currents inversely proportional to forward current: cable length aꢀ1/forward current (e.g. max 8
- 12cm at If=50mA).
• Proposed size for the pull-up resistor is 560 Ohmꢀ
• Short evaluation program
Adress
0x80
Command
Write 03
Action
Ambient Light Sensor in FREE-RUNNING mode
Proximity Sensor in FREE-RUNNING mode
0x81
Write 03
Wait 110 ms
0x8C
Read data
Read data
Read data
read LSByte data from ambient light measurement
read MSByte data from ambient light measurement
read data from proximity measurement LED 1
0x8D
0x8F
2011-09-16
2
SFH 7770
I2C interface
• 1.8V IO-logic level for SDA and SCL
• I/O-pins are open drain type and logic high level is set with external pull-up resistor
• SFH 7770 operates always as slave, address is 0x38.
• Designed for the I2C-modes: Standard (100kHz), Fast (400kHz) and High Speed (3.4MHz)
• Combined format (see I2C Bus specification UM10204 from NXP) for data reading
• Block READ and WRITE modes are available. In these modes several registers can be read or written
during single I2C traffic period. The register values are provided in a cyclic manner until master sends
the stop condition. E.g. if master uses block read and starts from register 0x8C, the slave returns
following register values: 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94 and so on until the
master sends stop condition.
• Interrupt pin (INT): open-drain output (like SDA and SCL)
VDD
6
SDA
9
Analog / amplifier
I2C
8 SCL
digital
+
INT
5
LED 1
LED 2
3
2
data-
register
proximity
ambient
light
LED
driver
1 LED 3
10
nc
7
4
GND
GND_LED
2011-09-16
3
SFH 7770
Measurement modes
OFF
I
DD is below 2PA and the device is inactive. Other units may use the I2C bus without
any restrections; I/O pins and INT are in a high Z state. There is no sink current
through the LEDs.
STAND-BY
This is the initial mode after power-up. IDD is below 5PA. No measurement is
performed. Device can be activated by I2C bus communication. Data registers can
be read and written. The data will be stored in the registers when the device goes
from TRIGGERED or FREE-RUNNING to STAND-BY.
TRIGGERED
Every measurement is separately initiated by MCU. This mode can be used for
Ambient Light Sensor and Proximity Sensor. Measurement data are available in the
registers after a defined delay time.
FREE-RUNNING Measurements are triggered internally by SFH7770. This mode can also be used
for Ambient Light Sensor and Proximity Sensor. Measurement repetition rate and
current through the LEDs are defined by the MCU. Measurement results can be
read from the data register, the status from the interrupt register.
OFF
STAND_BY
STAND-BY
Ambientlight
Sensor
Proximity
Sensor
(PS)
(ALS)
If VDD exceeds the threshold-voltage, the sensor will switch from OFF to STAND-BY mode. As shown
in the transition diagram above it is possible to switch between all modes without any restriction. The
transition time between modes (ttrans) is < 10ms. The delay time between STAND-BY and start of
measurement is max. 10ms for the Ambient Light Sensor.
2011-09-16
4
SFH 7770
Maximum limits ꢀ
Parameter
Symbol
Value
typ.
Unit
min.
– 40
- 0.3
max.
+ 85
+ 4.5
Storage temperature
Tstg
VDD
qC
Supply voltage
V
(between VDD and GND)
Maximum Voltage of SDA, SCL and INT to GND Vdig
Maximum Voltage of LED1 ... LED3 to GND_LED VLED
Maximum Voltage between GND and GND_LED VLED
- 0.3
- 0.3
-500
2
+ 3.6
+ 5.5
+500
V
V
mV
kV
Electrostatic discharge
ESD
- Human Body Model
(according to JESD22-A114-E; Class2 )
Operating conditions
Parameter
Symbol
Value
typ.
Unit
min.
- 20
2.3
max.
+ 85
3.1
Operation temperature
Supply Voltage
Top
qC
V
VDD
Ripple on Supply Voltage ꢀ
VDD,rip
10
mV
(VDD = 2.35 - 3.05V, DC ... 100MHz)
Voltage for I/O (SDA, SCL, INT)1)
extended Voltage range for I/O (SDA, SCL, INT)2) VIO,ext
VIO
1.6
1.6
2.3
2.0
V
V
V
3.1
Supply Voltage LED
VLED
4.25
Ripple VLED
DC... 30kHzꢀ VLED,rip
500ꢀ
mVꢀ
30kHz ... 100MHz
200
mV
1)
The limits for the logic levels of SCL and SDA pins are in accordance with the I²C bus specification from NXP
(UM10204 „I²C bus specification and user manual“, Rev. 03 - 19 June 2007). The same limits are valid for the logic
levels of the interrupt pin (INT): the maximum level for logic „LOW“ level is 30% of the I/O voltage VIO, the minimum
level for logic „HIGH“ level is 70% of the I/O voltage VIO.
2)
Extended voltage range for I²C bus communication is only valid for standard- and fast-mode. Input levels are
internally referenced to 1.8V. So „LOW“ level threshold is 30% of 1.8V and „HIGH“ level threshold is 70% of 1.8V
regardless of the external I/O voltage VIO. Operating at VIO>2.0V can lead to minor timing violations to the I²C bus
specification from NXP concerning the minimum/maximum hold time requirement.
2011-09-16
5
SFH 7770
Characteristics (Ta = 25°C)
Parameter
Symbol
Value
typ.
Unit
min.
max.
General
Conditions for OFF mode 1)
On-time (from OFF to STAND-BY) 1)
Threshold level for STAND-BY mode 1)
VDD,off
ton
VDD,on
ttrans
1.4
0.2
V
s
2.0
V
Transition time between modes
10
ms
(STAND-BY ...TRIGGERED ...FREE-RUNNING)
STAND-BY mode current consumption
OFF mode current consumption
IDD,stby
IDD,off
5
2
PA
PA
1)
Start-up sequence
VDD
upper threshold limit
2.0V
lower threshold llimit
1.4V
ton
ton
<0.2s
<0.2s
STAND-BY
undefined
STAND-BY
MODE:
OFF
undefined
time
The threshold limit where the device switches from OFF to STAND-BY is between VDD =1.4V and ꢀ
VDD =2.0V. Within 0.2s after exceeding the threshold voltage the device will switch from OFF to
STAND-BY mode.
2011-09-16
6
SFH 7770
Characteristics (Ta = 25°C)
Parameter
Symbol
Value
typ.
Unit
min.
max.
Proximity Sensor (PS)
Wavelength of max. sensitivity
Spectral range of sensitivity (50% of Smax
O S,max
O S,50%
850
nm
nm
)
750 ...ꢀ
1000
Sensitivity range, O = 850nm 2)
Ee
0.09 ...ꢀ
1.6
mW/cm²
Sensor signal (logarithmic) 2)
0 ... 254
counts
dB
Measurement accuracy for irradiance Ee,
- 6
+ 6
O=850nm at Ee=500μW/cm²
LED pulse current, programmable,
ILED,PP
5.5
-20
200
mA
( only when VLED - Vf1, f2, f3 > 0.4V)1)
Accuracy of LED pulse current
'ILED,PP
+20
300
%
Mean current consumption, FREE-RUNNINGꢀ
( one LED „ON“, If=100mA, trep = 100ms)
Iact
μA
Modulation frequency of LED current
fmod
trep
667
kHz
ms
Repeat frequency in FREE-RUNNING mode ꢀ
10 ... ꢀ
(programmable)
2000
Length of a single LED burst
tburst
300
1
μs
Length of a measurement cycle for 3 LEDs
Update of register data after MCU request
Sunlight suppression
t
t
ms
ms
klx
10
50
1)
DC-offset of 0.5mA has to be added to LED current consumption during LED burst
2) Output signal of the Proximity Sensor
The sensitivity range of the Proximity Sensor is typ. 100 μW/cm2 to 1.0 mW/cm2 . Within this range, the
data in the SFH 7770 output register are available in an approximately logarithmic scale. The advantage
of the logarithmic scale is the possibility to cover a large range of distance without changing the
sensitivity settings of the sensor. In addition the data are then approximately proportional to the distance
of an object.
When the irradiation is below 100 μW/cm², the PS output signal exhibits noise which is typically below
80 output counts (see the dashed line in the graph below).
For irradiation higher than typ. 100μW/cm², the PS output signal increases monotonically up to a value
of typ. 163.
2011-09-16
7
SFH 7770
When the irradiation is higher than 1 mW/cm², the PS output signal steps up to a value of 254 output
counts.
The proximity signal is converted to a 8 bit signal. When the irradiation is 500 μW/cm² the output is
typically 137 (1010 0011). More details on the characteristics of the Proximity Sensor can be seen below.
300
250
200
150
100
50
0,01
0,1
1
10
Ee (mW/cm2)
2011-09-16
8
SFH 7770
Characteristics (Ta = 25°C)
Parameter
Symbol
Value
typ.
Unit
min.
max.
Ambient Light Sensor (ALS)
Wavelength of max. sensitivity
Spectral range of sensitivity (10% of Smax
Measurement range
O S max
O S10%
555
nm
nm
)
480-660
3
65000 counts
Sensitivity (1000lx)
Deviation from linear output characteristics1)
X = 100-65000lx
X = 10-100lx
X = 3-10lx
Out
flin
0.6
1
1.5
count/lx
%
r5
r10
r30
Temperature coefficient for EV measurementꢀ
0°C ... 50°Cꢀ
-15°C ... 70°C
TcEv
- 0.20
- 0.25
+ 0.20 %/Kꢀ
+ 0.25 %/K
Update of register data after MCU request
t
100
ms
ms
Measurement repetition rate in FREE-RUNNING trep
100 ...ꢀ
mode, programmable
2000
Mean current consumption in FREE-RUNNING Iact
mode, trep = 500ms
200
μA
Current consumption in STAND-BY mode
Istby
5
μA
%
Error by Flicker noise ꢀ
-5
+5
(caused by bulbs or fluorescent lamps)
(f = 50 or 60Hz, 100% modulation)
1)
The deviation of the linear output characteristic is referenced to 1000lx and follows the formula:
YX
1000lx
u ----------------- – 1 u 100%
§
©
·
------------------
flin
=
¹
Y1000lx
X
X:
YX:
sensor illumination level in lux ꢀ
sensor output / measurement value at illumination level Xꢀ
Y1000lX: sensor output / measurement value at illumination level 1000lx
2011-09-16
9
SFH 7770
Software reset and control of the Ambient Light Sensor
R/W-Register 0x80
Bit
7
6
5
4
3
2
1
0
not used
complete SW reset
mode of Ambient Light Sensor
00 STAND-BY
default 00000
0
1 SW reset
00 STAND-BY
01 STAND-BY
10 TRIGGERED (by MCU)
11 FREE-RUNNING (internally triggered)
SW reset (Bit 3 „H“) starts sets all registers to default (same as POWER UP). Set back to „L“ by SFH7770
automatically.
Control of the Proximity Sensor
R/W-Register 0x81
Bit
7
6
5
4
3
2
1
0
not used
mode of Proximity Sensor
00 STAND-BY
default XXXXXX
00 STAND-BY
01 STAND-BY
10 TRIGGERED by MCU
11 FREE-RUNNING (internally triggered)
2011-09-16
10
SFH 7770
Emitter current setting
R/W-Register 0x82
Bit
7
6
5
4
3
2
1
0
activation of LEDs
default 00
00 LED1 active
setting LED2 pulse current
setting LED1 pulse current
011
50 mA
5 mA
011
000
001
010
011
100
101
110
50 mA
5 mA
000
01 LED1 and 2 active 001
10 LED1 and 3 active 010
10 mA
20 mA
50 mA
100 mA
150 mA
200 mA
10 mA
20 mA
50 mA
100 mA
150 mA
200 mA
11 all LEDs active
011
100
101
110
Emitter current setting
R/W-Register 0x83
Bit
7
6
5
4
3
2
1
0
not used
setting LED3 pulse current
default XXXXX
011
000
001
010
011
100
101
110
50 mA
5 mA
10 mA
20 mA
50 mA
100 mA
150 mA
200 mA
2011-09-16
11
SFH 7770
MCU-triggered measurement (for Ambient Light Sensor and Proximity Sensor)
R/W-Register 0x84
Bit
7
6
5
4
3
2
1
0
trigger proximity
1
not used
trigger ambient light
default XXXXXX
1
If „1“ is set, a new measurement will start after the I2C stop commmand from the MCU. As soon as the
measurement is finished, the corresponding bit of the register will be set to „0“ automatically by the
SFH7770.
Proximity measurement: time interval settings (repetition time) for FREE-RUNNING mode
R/W-Register 0x85
Bit
7
6
5
4
3
2
1
0
not used
time-interval
default XXXX
0101 100 ms
0000
0001
0010
0011
0100
10 ms
20 ms
30 ms
50 ms
70 ms
0101 100 ms
0110 200 ms
0111 500 ms
1000 1000 ms
1001 2000 ms
2011-09-16
12
SFH 7770
Ambient light measurement: time interval settings (repetition time) for FREE-RUNNING mode
R/W-Register 0x86
Bit
7
6
5
4
3
2
1
0
not used
time-interval
default XXXXX
010 500 ms
000 100 ms
001 200 ms
010 500 ms
011 1000 ms
100 2000 ms
Part number and revision Identification
R-Register 0x8A
Bit
7
6
5
4
3
2
1
0
Part number ID
Revision ID
XXXX (start with 0000)
1001
Manufacturer Identification
R-Register 0x8B
Bit
7
6
5
4
3
2
1
0
Manufacturer Identification
0000
0011
2011-09-16
13
SFH 7770
Ambient Light measurement data (0x8C: LSB , 0x8D: MSB )
R-Register 0x8C
Bit
7
6
5
4
3
2
2
1
1
0
LSB data
00000000
default
R-Register 0x8D
Bit
7
6
5
4
3
0
MSB data
00000000
default
The result of the Ambient Light Sensor is a 16bit word with MSB and LSB and is stored in two registers..
The binary data can be converted directly to decimal „lx“ values (max. 65535lx)
Status of measurement data for Ambient Light Sensor (ALS) and Proximity Sensor (PS)
R-Register 0x8E
Bit
7
6
5
4
3
2
1
0
ALS
threshold
ALS
data
PS LED3 PS LED3 PS LED2 PS LED2 PS LED1 PS LED1
threshold
data
threshold
data
threshold
data
default
00000000
When the measurement data are available in the register, the corresponding status bit (bit 6 for
ambient-light; bit 4, 2 and 0 for proximity) in register 0x8E is set to „1“. When the measurement data
have been read by the MCU, the status bit is automatically set back to „0“.
Bit 7 is set „1“ when the measured ALS value is outside the threshold level settings (register 0x96...
0x99). Bit 1, 3 and 5 are set when the measured PS value is above the threshold level (register 0x93...
0x95).
The status of register 0x8E will always be updated when a new measurement is available.
Proximity measurement data (LED 1 , 8bit, logarithmic)
R-Register 0x8F
Bit
7
6
5
4
3
2
1
0
data
default
00000000
2011-09-16
14
SFH 7770
Proximity measurement data (LED 2 , 8bit, logarithmic)
R-Register 0x90
Bit
7
6
5
4
3
3
2
2
1
1
0
data
default
00000000
Proximity measurement data (LED 3 , 8bit, logarithmic)
R-Register 0x91
Bit
7
6
5
4
0
data
default
00000000
Interrupt register / INT output.
R/W-Register 0x92
Bit
7
6
5
4
3
2
1
0
not
used
Interrupt
trigger source
not
used
Output mode
Output
polarity
Interrupt mode
(triggered by..)
R/W
not
R only
not
R/W
R/W
R/W
used
used
default
X
00
X
1
0
00
00 ALS
0 latched
0 active L
1 active H
00 Z state
01 PS (LED 1)
10 PS (LED 2)
11 PS (LED 3)
1 not latched
01 only PS
10 only ALS
11 PS and ALS
In Bit6/5 the source which triggers the interrupt is noted. Data from the status register (0x8E) are used.
In latched mode (set by bit3) this remains unchanged until the Interrupt register has been read by the
MCU, afterewards it is set to 0 automatically. In unlatched mode it is updated after every measurement.ꢀ
The output polarity (pin 5 of the SFH7770) can be changed by bit 2.ꢀ
The interrupt can be triggered by the Ambient Light Sensor and / or by the Proximity Sensor; this can
be set by the Interrupt mode (bit 1/bit 0). When bit 1 and bit 0 is set to 0, the INT output is in the high Z
state (high impedance).
2011-09-16
15
SFH 7770
Threshold level for Proximity Sensor (LED 1)
RW-Register 0x93
Bit
7
6
5
4
4
4
3
3
3
2
2
2
1
1
1
0
data
default
11111111
Threshold level for Proximity Sensor (LED 2)
RW-Register 0x94
Bit
7
6
5
0
0
data
default
11111111
Threshold level for Proximity Sensor (LED 3)
RW-Register 0x95
Bit
7
6
5
data
default
11111111
Upper threshold level for Ambient Light Sensor (LSB)
RW-Register 0x96
Bit
7
6
5
4
3
2
1
0
LSB data (upper threshold)
11111111
default
2011-09-16
16
SFH 7770
Upper threshold level for Ambient Light Sensor (MSB)
RW-Register 0x97
Bit
7
6
5
4
3
2
2
2
1
1
1
0
MSB data (upper threshold)
11111111
default
Lower threshold level for Ambient Light Sensor (LSB)
RW-Register 0x98
Bit
7
6
5
4
3
0
0
LSB data (lower threshold)
00000000
default
Lower threshold level for Ambient Light Sensor (MSB)
RW-Register 0x99
Bit
7
6
5
4
3
MSB data (lower threshold)
00000000
default
2011-09-16
17
SFH 7770
Package Outlines
Maße in mm/ Dimensions in mm
Pin 1 identifier: one additional yellow pad in the edge, visible in front view
2011-09-16
18
SFH 7770
Gurtung / Polarität und Lage
Verpackungseinheit 3000/Rolle, ø180 mm
Method of Taping / Polarity and Orientation
Packing unit 3000/reel, ø180 mm
W1
SFH 7770
D0
P0
P2
Label
P1
Direction of unreeling
Direction of unreeling
W2
Gurtvorlauf: 400 mm
Leader:
400 mm
Gurtende: 160 mm
Trailer:
160 mm
OHAY0324
Maße in mm (inch) / Dimensions in mm (inch).
Tape dimensions in mm (inch)
W
P0
P1
P2
2 r 0.05ꢀ
D0
E
F
8 ꢁ0.3 / -0.1
4 r 0.1ꢀ
4 r 0.1ꢀ
1.5 ꢁꢀ0.1ꢀ
1.75 r 0.1ꢀ
3.5 r 0.05ꢀ
(0.157 r 0.004) (0.157 r 0.004) (0.079 r 0.002) (0.059 ꢁꢀ0.004) (0.069 r 0.004) (0.138 r 0.002)
Reel dimensions in mm (inch)
A
W
Nmin
W1
W2 max
180 (7)
8 (0.315)
60 (2.362)
8.4 ꢁꢀ2 (0.331 ꢁꢀ0.079)
14.4 (0.567)
2011-09-16
19
SFH 7770
Recommended solderpad design
0.7
1.05
0.5
0.7
2.8
2.6
2.8
Maße in mm/ Dimensions in mm
Lötbedingungen
Soldering Conditions
Reflow Lötprofil für bleifreies Löten
Vorbehandlung nach JEDEC Level 3ꢀ
Preconditioning acc. to JEDEC Level 3ꢀ
(nach J-STD-020-D.01)ꢀ
Reflow Soldering Profile for lead free soldering
(acc. to J-STD-020-D.01)
ꢀ
˚C
T
250
T
245 ˚C
p
240 ˚C
tP
tL
217 ˚C
200
150
tS
100
50
25 ˚C
2011-09-16
20
SFH 7770
Pb-Free (SnAgCu) Assembly
Max. Ratings
Recommendation
Profile Feature
Ramp-up Rate to Preheat*)ꢀ
25°C to 150°C
2°C / sec
3°C / sec
Time ts from TSmin to TSmaxꢀ
(150°C to 200°C
100s
min. 60sec max. 120sec
3°C / sec
217°C
Ramp-up Rate to Peak*)ꢀ
TSmax to TP
2°C / sec
Liquidus Temperture TL
Time tL above TL
80sec
245°C
20sec
max. 100sec
Peak Temperature TP
max. 260°C
Time tP within 5°C of the specified peak
temperature TP - 5K
min. 10sec max. 30sec
Ramp-down Rate*ꢀ
3°C / sec
6°C / sec maximum
max. 8 min.
TP to 100°C
Time 25°C to Peak temperature
All temperatures refer to the center of the package, measured on the top of the component
* slope calculation 'T/'t: 't max. 5 sec; fulfillment for the whole T-range
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SFH 7770
Published by ꢀ
OSRAM Opto Semiconductors GmbH
Leibnizstr. 4, D-93055 Regensburg
www.osram-os.com
© All Rights Reserved.
The information describes the type of component and shall not be considered as assured characteristics. Due to the
special conditions of the manufacturing processes of Sensor, 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.ꢀ
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.
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 1 , may only be used in life-support devices or systems 2 with the express written approval of OSRAM OS.
1 A critical component is a component usedin 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 effectiveness of that device or system.
2 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 of the user may be endangered.
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