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| iC-OD, iC-ODL OPTICAL POSITION-SENSITIVE DETECTOR (PSD) Rev D3, Page 1/9 FEATURES o Low-noise current amplifier with an integrated position-sensitive photodiode o High reliability due to monolithical design o Effective photodiode area: 2.6 mm x 0.88 mm (iC-OD) resp. 8.4 mm x 0.88 mm (iC-ODL) o High sensitivity for visible light and near infrared o Integrated bandpass filter with 100 kHz center frequency o High background light suppression o Analogue current source output o Minimum external circuitry required o Low power consumption from 3.9 to 13.2 V supply voltage APPLICATIONS o Position-sensitive detection of pulse lights o Receiver for motion or proximity sensors PACKAGES oLGA OD4C OBGA TM ODL2C BLOCK DIAGRAM (3.9) 4.5..13.2V 2 VCC A f iph1 iph2 AC-AMP IAC1 3 Vout1 R1 10k VCC A f IAC2 4 iC-OD/L AC-AMP GND 1 Vout2 R2 10k Pin numbers given for iC-OD oLGA OD4C Copyright (c) 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) PIN FUNCTIONS No. Name Function 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 2 1 3 4 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 PIN CONFIGURATION OBGA ODL2C TM (top view) 7 8 6 5 1 2 3 4 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 Supply Voltage Current in IAC1, IAC2 Junction Temperature Storage Temperature see package specifications Conditions Fig. Min. 0 -1 -40 Max. 15 0 130 V mA C Unit G001 VCC G002 I() G003 Tj G004 Ts THERMAL DATA Operating Conditions: VCC = 4.5...13.2 V Item No. T01 Symbol Ta Parameter Conditions Fig. Min. Operating Ambient Temperature Range see package specifications Typ. Max. Unit 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. iC-OD, iC-ODL OPTICAL POSITION-SENSITIVE DETECTOR (PSD) Rev D3, Page 6/9 ELECTRICAL CHARACTERISTICS Operating Conditions: VCC = 4.5...13.2 V, = 880 nm, Tj = -25...85 C, unless otherwise noted Item No. Symbol Parameter Conditions Tj C Fig. Min. 4.5 3.9 0.55 27 003 004 Vs() I0() Saturation Voltage at IAC1, IAC2 Vs() = VCC - V(); I() = -400 A Output Bias Current in IAC1, IAC2 Spectral Sensitivity Range of Spectral Sensitivity Radiant Sensitive Area iC-OD Radiant Sensitive Area iC-ODL Output Current Operating Range in IAC1, IAC2 Permissible Irradiance for Alternating Light (peak value) Sum of Output Currents (RMS) DC Photo Current Capabillity f = fc ic-OD iC-ODL ISUM = I(IAC1) + I(IAC2); f = fc, Ee()ac = 30 W/cm Position of light spot irrelevant Tj = -25...85 C Tj = 0...60 C position of light spot centered Standard Illuminant A at T = 2856 K; iC-OD iC-ODL Q = fc / (fhc - flc) 0.35 0.40 0.13 44 48 -25 27 2.7 4.5 27 16 -50 -500 Se( ar ) = 0.1 x S( )max 500 2.63 x 0.88 8.42 x 0.88 0 iph = 0 27 -210 -108 0.5 1050 0.95 0.5 Typ. Max. 13.2 13.2 2.4 V V mA mA V A A A/W nm mm mm A Unit Totel Device 001 VCC 002 I(VCC) Permissible Supply Voltage VCC Tj = -25...85 C Tj = 0...60 C Supply Current in VCC iph = 0 Photodiode 101 102 103 104 201 202 S( )max ar Aph () Aph () I() Pe()pk Photo Current Amplifier IAC1, IAC2 2.2 0.7 W W A A A A A 203 204 ISUM iph()dc 205 Ev()dc Permissible Ambient Light Level 250 75 100 0.5 0.52 0.60 0.18 52 lx lx kHz 206 207 208 209 210 fc Q I()/ISUM I()min / ISUM Ai()fc Bandpass Center Frequency Filter Q-Factor Single Amplifier Output Current to f = fc, position of light spot cenSum of Output Currents tered Smaller Output Current to Sum of f = fc, position of light spot 1 mm Output Currents out of center Photo Current Gain for Alternating Light Change of Photo Current Gain Low-Frequency Photo Current Gain RMS Noise Voltage Ai()fc = ISUM / (iph1 + iph2); f = fc, position of light spot centered f = fc, position of light spot 1 mm out of center f = 100 Hz With external filter: R1, R3 = 10 k, C1, C3 = 120 pF, R2, R4 = 50 k, C2, C4 = 100 pF 27 6 dB 211 212 213 dAi()fc Ai()100 Vn(Vout) -10 1 3 2.1 10 6 2.8 % dB mV 214 215 ton (VCC) ton (VCC) Power-on Setup Time 30 Power-on Setup Time Tj = 0...60 C, VCC = 0 4 V 27 70 50 100 s s s s iC-OD, iC-ODL OPTICAL POSITION-SENSITIVE DETECTOR (PSD) Rev D3, Page 7/9 TYPICAL CHARACTERISTICS 1.0 IAC1 relative AC photo current IAC2 100 % 90 80 0.5 70 60 50 0 -1.25 0 position on PSD +1.25 [mm] 40 30 20 10 400 600 ext. Filter 800 1000 nm Figure 1: Example for position sensing characteristics External filter (RG850) improves the suppression of ambient light by a factor of ca. 20 to 30. Figure 2: Relative spectral sensitivity APPLICATIONS INFORMATION CH1 iC-OD/L OUTPUT RL1= 10k, RL2= 10k CH2 iC-OD/L OUTPUT RL1= 10k, RL2= 10k CH2 CH1 CH1, CH2= 0V CH1, CH2= 0V CH1 - CH2 CH1 - CH2 CH1-CH2= 0V CH1-CH2= 0V CH1 0.5V/DIV CH2 0.5V/DIV TIME 2US/DIV CH1 0.5V/DIV CH2 0.5V/DIV TIME 2US/DIV Figure 3: The light spot impinges to the left 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 s light pulse. The differential signal shown has been calculated. Both of the outputs are terminated with 10 k. An external filter is not used. CH1 iC-OD/L OUTPUT RL1= 10k, RL2= 10k CH2 CH1, CH2= 0V 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 f iph1 iph2 AC-AMP R1 10k VCC A f IAC2 IAC1 C2 100pF Vout1 C1 120pF R2 50k C4 100pF Vout2 R3 10k C3 120pF R4 50k iC-OD/L AC-AMP GND 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 iC-OD Package OLGA OD4C OBGA ODL2C TM Order Designation iC-OD chip iC-OD OLGA OD4C iC-ODL chip iC-ODL OBGA ODL2C iC-ODL 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: sales@ichaus.com |
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