Agilent HSDL-9000
Miniature Surface-Mount
Ambient Light Photo Sensor
Data Sheet
Features
• Excellent responsivity which peaks
in the human luminosity curve at
550 nm
Close responsivity to the human eye
• Miniature PLCC surface-mount
package
Height – 1.1 mm
Width – 4.0 mm
Depth – 3.2 mm
• Ease of design with digital output
Integrated photodiode and
analog to digital output circuitry
• Enable fine control of the backlight
intensity with adjustable sensitivity
control
3 digital levels
An Analog Gain Control
• Minimum power consumption
30
µA
typical idle (standby) current
<10 nA typical shutdown current
• Guaranteed temperature
performance
–25°C to 85°C
• 2.7
≤
V
CC
≤
3.6 V
• Lead-free package
• Low cost
Applications
• Detection of ambient light to control
display backlighting
Mobile devices – mobile phones,
PDAs
Automotive – dashboard
Consumer appliances – audio sets
• Daylight and artificial light exposed
devices
Description
The HSDL-9000 is a low cost,
digital-output ambient light photo
sensor in miniature industry-
standard PLCC lead-free surface-
mount package. It incorporates a
photodiode, which peaks in
human luminosity curve at 550
nm. Hence, it provides an
excellent responsivity that is
close to the response of human
eyes, as shown in Figure 2.
With the options of three digital
levels and an analog Gain Control
pin to fine tune the three
threshold levels to achieve better
sensitivity control, the HSDL-
9000 is ideal for applications in
which the measurement of
ambient light is used to control
display backlighting. Mobile
appliances such as mobile phones
and PDAs that draw heavy
current from the display back-
lighting will benefit from
incorporating the HSDL-9000 in
their designs to reduce the power
consumption significantly.
Ordering Information
Part Number
HSDL-9000
Packaging Type
Tape and Reel
Package
6-lead PLCC with Top Transparent Epoxy Surface
Quantity
1500
Application Circuit For HSDL-9000 Ambient Light Photo Sensor
V
CC
C1
(1)
V
CC
R1
(5)
AGain
ANALOG TO DIGITAL
CIRCUITRY
D
OUT
(6)
HSDL-9000
GND
(4)
A0
(2)
A1
(3)
Figure 1. Functional block diagram of HSDL-9000.
I/O Pins Configuration Table
Pin
1
2
3
4
5
6
Symbol
V
CC
A0
A1
GND
AGain
D
OUT
I/O
I
I
I
I
I
O
Description
Supply Voltage
Digital Gain Level Control_0
Digital Gain Level Control_1
Ground
Analog Gain Constant Control
Digital Output
Notes
Regulated, 2.7 to 3.6 Volt
This pin needs to be driven high or low and not left floating.
This pin needs to be driven high or low and not left floating.
Connect to System Ground
If not used, leave this pin unconnected.
Tri-State
[1]
Note:
1. The HSDL-9000 is in tri-state when it is in shut down mode.
I/O Truth Table
[2]
Logic Level
A1
0
1
0
1
A0
0
0
1
1
Description
High Gain
Medium Gain
Low Gain
Shut down
Incidence Light Threshold (Lux)
[3]
30
81
164
–
Notes:
2. AGain pin is left floating.
3. Measurements are carried out using incandescent light source.
2
Recommended Application Circuit Components
Component
C1
Recommended Value
1.0
µF ±
20%, Tantalum
Recommended R1 Values
[4]
Incidence Light Threshold (Lux)
R1
220 kΩ
±
5%, 0.25 W
430 kΩ
±
5%, 0.25 W
910 kΩ
±
5%, 0.25 W
High Gain
23
25
28
Medium Gain
50
63
71
Low Gain
81
108
133
Note:
4. Measurements are carried out using incandescent light source.
1.1
NORMALIZED RESPONSIVITY
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
350 450 550 650 750 850 950 1050
WAVELENGTH – nm
HSDL-9000
SILICON
EYE
Figure 2. Relative spectral responsivity vs. wavelength.
Caution:
The BiCMOS inherent to this design of this component increases the component’s
susceptibility to damage from Electrostatic Discharge (ESD). It is advised that normal static precautions
be taken in handling and assembly of this component to prevent damage and/or degradation, which may
be induced by the ESD.
3
Absolute Maximum Ratings
For implementations where case to ambient thermal resistance is
≤
50°C/W
Parameter
Storage Temperature
Operating Temperature
Supply Voltage
Output Voltage: RxD
Symbol
T
S
T
A
V
CC
V
O
Min.
–25
–25
0
–0.5
Max.
+85
+85
6
6
Units
°C
°C
V
V
Conditions
Recommended Operating Conditions
Parameter
Operating Temperature
Supply Voltage
Logic Input
Logic High
Logic Low
Symbol
T
A
V
CC
V
IH
V
IL
Min.
–25
2.7
V
CC
– 0.2
0
Max.
+85
3.6
V
CC
0.2
Units
°C
V
V
V
Conditions
Electrical & Optical Specifications
Specifications (Min. & Max. values) hold over the recommended operating conditions unless otherwise noted.
Unspecified test conditions may be anywhere in their operating range.
All typical values (Typ.) are at 25°C with V
CC
at 3.0 V unless otherwise noted.
Parameter
Peak Sensitivity Wavelength
Viewing Angle
Logic Input
Logic High
Logic Low
Output Voltage Logic High
Logic Low
Supply Current
Shutdown Current
V
IH
V
IL
V
OH
V
OL
I
CC
I
CC
(SD)
V
CC
–0.2
0
V
CC
–0.2
0
33
10
Symbol
λ
P
Min.
Typ.
550
120
V
CC
0.2
V
CC
0.2
100
100
Max.
Units
nm
°
V
V
V
V
µA
nA
I
OH
= –200
µA
I
OL
= 200
µA
Conditions
4
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