ICHAUS IC-ODOLGAOD4C Optical position-sensitive detector (psd) Datasheet

iC-OD, iC-ODL
OPTICAL POSITION-SENSITIVE DETECTOR (PSD)
Rev D3, Page 1/9
FEATURES
APPLICATIONS
♦ Low-noise current amplifier with an integrated
position-sensitive photodiode
♦ High reliability due to monolithical design
♦ Effective photodiode area: 2.6 mm x 0.88 mm (iC-OD) resp.
8.4 mm x 0.88 mm (iC-ODL)
♦ High sensitivity for visible light and near infrared
♦ Integrated bandpass filter with 100 kHz center frequency
♦ High background light suppression
♦ Analogue current source output
♦ Minimum external circuitry required
♦ Low power consumption from 3.9 to 13.2 V supply voltage
♦ Position-sensitive detection of
pulse lights
♦ Receiver for motion or proximity
sensors
PACKAGES
oLGA OD4C
OBGA™
ODL2C
BLOCK DIAGRAM
(3.9) 4.5..13.2V
2
VCC
A
IAC1 3
f
iph1
Vout1
AC−AMP
iph2
R1
10kΩ
VCC
A
IAC2
f
iC−OD/L
4
Vout2
AC−AMP
GND
R2
10kΩ
1
Pin numbers given for iC-OD oLGA OD4C
Copyright © 2006 iC-Haus
http://www.ichaus.com
iC-OD, iC-ODL
OPTICAL POSITION-SENSITIVE DETECTOR (PSD)
Rev D3, Page 2/9
DESCRIPTION
The iC-OD/L device is an optical position sensitive detector with a monolithic integrated photodiode.
The device supersedes one PSD and two conventional photoelectric detectors, e.g. in motion sensors.
Constant light and low-frequency variing light are
suppressed by a highpass filter. A lowpass filter
reduces high-frequency interference to a minimum.
The maximum sensitivity for alternating-light signals
(for AC photoelectric currents) is about 100 kHz, with
a current amplification of typically 48 dB.
The photoelectric current is partitioned to the two
photocurrent amplifiers according to the position of
the light signal. The analogue outputs IAC1 and IAC2
offer directly the amplified AC photoelectric current.
PACKAGES
PIN CONFIGURATION OLGA OD4C
(top view)
2
1
3
4
PIN FUNCTIONS
No. Name Function
1
2
3
4
PIN CONFIGURATION OBGA™ ODL2C
(top view)
7
8
6
5
1
2
3
4
GND
VCC
IAC1
IAC2
Ground
+(3.9)4.5 to +13.2 V Supply Voltage
Current Output 1
Current Output 2
PIN FUNCTIONS
No. Name Function
1
2
3
4
5
6
7
8
VCC
IAC1
IAC2
GND
n.c.
n.c.
n.c.
n.c.
+(3.9)4.5 to +13.2 V Supply Voltage
Current Output 1
Current Output 2
Ground
iC-OD, iC-ODL
OPTICAL POSITION-SENSITIVE DETECTOR (PSD)
Rev D3, Page 3/9
CHIP LAYOUT iC-OD
VCC
IAC1
IAC2
GND
iC-OD, iC-ODL
OPTICAL POSITION-SENSITIVE DETECTOR (PSD)
Rev D3, Page 4/9
CHIP LAYOUT iC-ODL
VCC
IAC1
IAC2
GND
iC-OD, iC-ODL
OPTICAL POSITION-SENSITIVE DETECTOR (PSD)
Rev D3, Page 5/9
ABSOLUTE MAXIMUM RATINGS
Beyond these values damage may occur; device operation is not guaranteed.
Item
No.
Symbol
Parameter
Conditions
Fig.
Unit
Min.
Max.
G001 VCC
Supply Voltage
0
15
V
G002 I()
Current in IAC1, IAC2
-1
0
mA
G003 Tj
Junction Temperature
-40
130
°C
G004 Ts
Storage Temperature
see package specifications
THERMAL DATA
Operating Conditions: VCC = 4.5...13.2 V
Item
No.
T01
Symbol
Parameter
Conditions
Fig.
Unit
Min.
Ta
Operating Ambient Temperature Range see package specifications
All voltages are referenced to ground unless otherwise stated.
All currents into the device pins are positive; all currents out of the device pins are negative.
Typ.
Max.
iC-OD, iC-ODL
OPTICAL POSITION-SENSITIVE DETECTOR (PSD)
Rev D3, Page 6/9
ELECTRICAL CHARACTERISTICS
Operating Conditions: VCC = 4.5...13.2 V, λ = 880 nm, Tj = -25...85 °C, unless otherwise noted
Item
No.
Symbol
Totel Device
001 VCC
002
I(VCC)
Parameter
Conditions
Tj
°C
Fig.
Permissible Supply Voltage VCC Tj = -25...85 °C
Tj = 0...60 °C
Supply Current in VCC
Unit
Min.
4.5
3.9
iph = 0
0.55
27
003
004
Vs()
Saturation Voltage at IAC1, IAC2 Vs() = VCC – V(); I() = -400 µA
I0()
Output Bias Current in IAC1,
IAC2
Typ.
Max.
13.2
13.2
V
V
2.4
mA
mA
0.5
V
0.95
iph = 0
-210
27
µA
µA
-108
Photodiode
101
S(λ )max
Spectral Sensitivity
102
λar
Range of Spectral Sensitivity
0.5
103
Aph ()
Radiant Sensitive Area iC-OD
2.63 x 0.88
mm²
104
Aph ()
Radiant Sensitive Area iC-ODL
8.42 x 0.88
mm²
Se(λ ar ) = 0.1 x S(λ )max
500
A/W
1050
nm
Photo Current Amplifier IAC1, IAC2
201
I()
Output Current Operating Range
in IAC1, IAC2
202
Pe()pk
Permissible Irradiance for
Alternating Light (peak value)
f = fc
ic-OD
iC-ODL
Sum of Output Currents (RMS)
ISUM = I(IAC1) + I(IAC2);
f = fc, Ee()ac = 30 µW/cm²
203
204
205
ISUM
iph()dc
Ev()dc
DC Photo Current Capabillity
Permissible Ambient Light Level
-500
Position of light spot irrelevant
Tj = -25...85 °C
Tj = 0...60 °C
position of light spot centered
0
µA
2.2
0.7
µW
µW
-25
27
-50
µA
µA
16
µA
µA
µA
250
75
lx
lx
2.7
4.5
27
Standard Illuminant A at
T = 2856 K;
iC-OD
iC-ODL
206
fc
Bandpass Center Frequency
207
Q
Filter Q-Factor
208
I()/ISUM
Single Amplifier Output Current to f = fc, position of light spot cenSum of Output Currents
tered
0.40
0.60
209
I()min /
ISUM
Smaller Output Current to Sum of f = fc, position of light spot 1 mm
Output Currents
out of center
0.13
0.18
210
Ai()fc
Photo Current Gain for
Alternating Light
Ai()fc = ISUM / (iph1 + iph2);
f = fc, position of light spot centered
44
211
dAi()fc
Change of Photo Current Gain
f = fc, position of light spot 1 mm
out of center
-10
212
Ai()100
Low-Frequency Photo Current
Gain
f = 100 Hz
213
Vn(Vout)
RMS Noise Voltage
With external filter:
R1, R3 = 10 kΩ, C1, C3 = 120 pF,
R2, R4 = 50 kΩ, C2, C4 = 100 pF
214
ton (VCC)
Power-on Setup Time
215
ton (VCC)
Power-on Setup Time
100
Q = fc / (fhc – flc)
0.35
1
6
0.5
48
kHz
0.52
52
dB
10
%
3
6
dB
2.1
2.8
mV
50
µs
µs
100
µs
µs
27
30
27
70
Tj = 0...60 °C, VCC = 0 → 4 V
iC-OD, iC-ODL
OPTICAL POSITION-SENSITIVE DETECTOR (PSD)
Rev D3, Page 7/9
TYPICAL CHARACTERISTICS
100
%
90
1.0
relative AC photo current
IAC1
IAC2
80
70
0.5
60
50
40
0
−1.25
0
position on PSD
30
+1.25 [mm]
20
Figure 1: Example for position sensing characteristics
ext.
Filter
10
400
External filter (RG850) improves the suppression of
ambient light by a factor of ca. 20 to 30.
600
800
1000 nm
Figure 2: Relative spectral sensitivity
APPLICATIONS INFORMATION
iC−OD/L OUTPUT
RL1= 10k, RL2= 10k
CH1
iC−OD/L OUTPUT
RL1= 10k, RL2= 10k
CH2
CH2
CH1
CH1, CH2= 0V
CH1 − CH2
CH1, CH2= 0V
CH1 − CH2
CH1−CH2= 0V
CH1−CH2= 0V
CH2 0.5V/DIV
CH1 0.5V/DIV
TIME 2US/DIV
CH1 0.5V/DIV
Figure 3: The light spot impinges to the left
iC−OD/L OUTPUT
RL1= 10k, RL2= 10k
CH1
CH2
CH2 0.5V/DIV
TIME 2US/DIV
Figure 5: The light spot impinges to the right
Examples of output signals
The oscilloscope pictures show the signal patterns at
iC-OD outputs IAC1 and IAC2 when receiving a 5 µs
light pulse. The differential signal shown has been calculated.
CH1, CH2= 0V
Both of the outputs are terminated with 10 kΩ. An external filter is not used.
CH1 − CH2
CH1−CH2= 0V
CH1 0.5V/DIV
CH2 0.5V/DIV
TIME 2US/DIV
Figure 4: The light spot impinges in the center
iC-OD, iC-ODL
OPTICAL POSITION-SENSITIVE DETECTOR (PSD)
Rev D3, Page 8/9
Example: external filter
(3.9) 4.5..13.2V
VCC
A
iph1
C2
100pF
IAC1
f
Vout1
AC−AMP
iph2
R1
10kΩ
C1
120pF
R2
50kΩ
VCC
A
f
iC−OD/L
C4
100pF
IAC2
Vout2
AC−AMP
GND
R3
10kΩ
C3
120pF
R4
50kΩ
Figure 6: External filter to detach the DC-portion and to reduce the noise
This specification is for a newly developed product. iC-Haus therefore reserves the right to change or update, without notice, any information contained herein,
design and specification; and to discontinue or limit production or distribution of any product versions. Please contact iC-Haus to ascertain the current data.
Copying – even as an excerpt – is only permitted with iC-Haus approval in writing and precise reference to source.
iC-Haus does not warrant the accuracy, completeness or timeliness of the specification on this site and does not assume liability for any errors or omissions
in the materials. The data specified is intended solely for the purpose of product description. No representations or warranties, either express or implied, of
merchantability, fitness for a particular purpose or of any other nature are made hereunder with respect to information/specification or the products to which
information refers and no guarantee with respect to compliance to the intended use is given. In particular, this also applies to the stated possible applications or
areas of applications of the product.
iC-Haus conveys no patent, copyright, mask work right or other trade mark right to this product. iC-Haus assumes no liability for any patent and/or other trade
mark rights of a third party resulting from processing or handling of the product and/or any other use of the product.
iC-OD, iC-ODL
OPTICAL POSITION-SENSITIVE DETECTOR (PSD)
Rev D3, Page 9/9
ORDERING INFORMATION
Type
Package
Order Designation
iC-OD
OLGA OD4C
iC-OD chip
iC-OD OLGA OD4C
iC-ODL
OBGA™ ODL2C
iC-ODL chip
iC-ODL OBGA ODL2C
For information about prices, terms of delivery, other packaging options etc. please contact:
iC-Haus GmbH
Am Kuemmerling 18
D-55294 Bodenheim
GERMANY
Tel.: +49 (61 35) 92 92-0
Fax: +49 (61 35) 92 92-192
Web: http://www.ichaus.com
E-Mail: [email protected]
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