TSSP58P38 www.vishay.com Vishay Semiconductors IR Detector for Mid Range Proximity Sensor FEATURES • Up to 2 m for proximity sensing • Receives 38 kHz modulated signal • 940 nm peak wavelength • Photo detector and preamplifier in one package • Low supply current • Shielding against EMI • Visible light is suppressed by IR filter 19026 • Insensitive to supply voltage ripple and noise • Supply voltage: 2.5 V to 5.5 V • Material categorization: for definitions of compliance please see www.vishay.com/doc?99912 MECHANICAL DATA Pinning 1 = OUT, 2 = GND, 3 = VS APPLICATIONS DESCRIPTION • Object approach detection for activation of displays and user consoles, signaling of alarms, etc. The TSSP58P38 is a compact infrared detector module for proximity sensing application. It receives 38 kHz modulated signals and has a peak sensitivity of 940 nm. • Simple gesture controls • Differentiation of car arrival, static, car departure in parking lots The length of the detector’s output pulse varies in proportion to the amount of light reflected from the object being detected. • Reflective sensors for toilet flush • Navigational sensor for robotics PARTS TABLE Carrier frequency 38 kHz TSSP58P38 Package Minicast Pinning 1 = OUT, 2 = GND, 3 = VS Dimensions (mm) 5.0 W x 6.95 H x 4.8 D Mounting Leaded Application Proximity sensors BLOCK DIAGRAM PROXIMITY SENSING +3 V 16833_5 3 33 kΩ IR emitter VS Envelope signal 1 Input AGC Band pass Demodulator 38 kHz OUT +3 V 2 PIN Control circuit Out to μC GND TSSP58P38 Rev. 1.4, 01-Sep-15 1 Document Number: 82476 THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 TSSP58P38 www.vishay.com Vishay Semiconductors ABSOLUTE MAXIMUM RATINGS PARAMETER TEST CONDITION SYMBOL VALUE UNIT VS -0.3 to +6 V Supply voltage (pin 3) Supply current (pin 3) IS 5 mA Output voltage (pin 1) VO -0.3 to 5.5 V VS - VO -0.3 to (VS + 0.3) V IO 5 mA Voltage at output to supply Output current (pin 1) Junction temperature Tj 100 °C Tstg -25 to +85 °C Tamb -25 to +85 °C Ptot 10 mW Storage temperature range Operating temperature range Tamb ≤ 85 °C Power consumption Note • Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating condtions for extended periods may affect the device reliability. ELECTRICAL AND OPTICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified) PARAMETER Supply current (pin 3) TEST CONDITION SYMBOL MIN. TYP. MAX. Ee = 0, VS = 5 V ISD 0.55 0.7 0.9 mA Ev = 40 klx, sunlight ISH - 0.8 - mA VS 2.5 - 5.5 V Supply voltage UNIT Receiving distance Direct line of sight, test signal see fig. 1, IR diode TSAL6200, IF = 250 mA d - 40 - m Output voltage low (pin 1) IOSL = 0.5 mA, Ee = 0.7 mW/m2, test signal see fig. 1 VOSL - - 100 mV Minimum irradiance Pulse width tolerance: tpi - 5/fo < tpo < tpi + 6/fo, test signal see fig. 1 Ee min. - 0.2 0.4 mW/m2 Maximum irradiance tpi - 5/fo < tpo < tpi + 6/fo, test signal see fig. 1 Ee max. 50 - - W/m2 Angle of half receiving distance ϕ1/2 - ± 45 - deg Directivity TYPICAL CHARACTERSTICS (Tamb = 25 °C, unless otherwise specified) Optical Test Signal 1.0 (IR diode TSAL6200, IF = 0.4 A, 30 pulses, f = f0, t = 10 ms) tpo - Output Pulse Width (ms) Ee t t pi * T * tpi VO 10/f0 is recommended for optimal function Output Signal 1) 2) VOH VOL td 1) 16110_4 7/f0 < td < 15/f0 tpi - 5/f0 < tpo < tpi + 6/f 0 tpo 2) 0.8 Input Burst Length 0.7 0.6 0.5 0.4 0.3 0.2 λ = 950 nm, Optical Test Signal, Fig.1 0.1 0 0.1 1 10 102 Ee - Irradiance t Fig. 1 - Output Active Low Rev. 1.4, 01-Sep-15 Output Pulse Width 0.9 103 104 (mW/m2) Fig. 2 - Pulse Length and Sensitivity in Dark Ambient 2 Document Number: 82476 THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 TSSP58P38 Vishay Semiconductors 1.0 200 0.9 180 tpo - Output Pulse Width (ms) E e min./Ee - Rel. Responsivity www.vishay.com 0.8 0.7 0.6 0.5 0.4 0.3 0.2 f = f0 ± 5 % Δf (3 dB) = f0/10 0.1 160 140 120 100 80 60 40 0 25 35 30 40 45 0.1 50 Fig. 3 - Frequency Dependence of Responsivity 0.35 Ee min. - Sensitivity (mW/m2) 0.40 Correlation with Ambient Light Sources: 4.5 10 W/m2 = 1.4 kLx (Std. illum. A, T = 2855 K) 2 4.0 10 W/m = 8.2 kLx (Daylight, T = 5900 K) 3.5 Wavelength of Ambient Illumination: λ = 950 nm 2.5 2.0 1.5 1.0 0.5 0 0.01 0.1 1 10 0.25 0.20 0.15 0.10 0.05 0 -30 100 S (λ)rel - Relative Spectral Sensitivity Ee min. - Threshold Irradiance (mW/m2) f = f0 0.8 0.7 f = 30 kHz 0.6 0.5 f = 20 kHz 0.4 f = 10 kHz 0.2 0.1 f = 100 Hz 1 10 100 1000 ΔVsRMS - AC Voltage on DC Supply Voltage (mV) 30 50 70 90 1.2 1.0 0.8 0.6 0.4 0.2 0 750 94 8408 Fig. 5 - Sensitivity vs. Supply Voltage Disturbances Rev. 1.4, 01-Sep-15 10 Fig. 7 - Sensitivity vs. Ambient Temperature 1.0 0 -10 Tamb - Ambient Temperature (°C) Fig. 4 - Sensitivity in Bright Ambient 0.3 100 0.30 Ee - Ambient DC Irradiance (W/m2) 0.9 10 Fig. 6 - Maximum Output Pulse Width vs. Irradiance 5.0 3.0 1 Ee - Irradiance (mW/m2) 22088 f/f0 - Relative Frequency Ee min. - Threshold Irradiance (mW/m2) Burst length = 300 ms, f = fO 20 0.0 850 950 1050 1150 λ - Wavelength (nm) Fig. 8 - Relative Spectral Sensitivity vs. Wavelength 3 Document Number: 82476 THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 TSSP58P38 www.vishay.com Vishay Semiconductors 800 140 700 120 Emitter: VSLB3940 100 500 tpo (ms) trepeat min. (ms) 600 400 300 80 60 100 20 0 0 IF = 10 mA 0 20 40 60 80 0.0 100 120 140 160 180 tpi (ms) 0.4 IF = 30 mA IF = 50 mA 0.8 1.2 1.6 2.0 2.4 Response Distance (m) Fig. 9 - Max. Rate of Bursts Fig. 11 - tpo vs. Distance Kodak Gray Card Plus 15 % 7 1.2 6 1.0 5 0.8 dmax./dmin. Relative Response Distance IF = 100 mA 40 200 0.6 0.4 4 3 2 Directivity Characteristic of a Reflective Sensor using VSLB3940 and TSSP58P38 0.2 0 -80 1 0 -60 -40 -20 0 20 40 60 10 20 30 40 50 60 70 80 90 100 110 120 80 tpi (ms) Angle (°) Fig. 10 - Angle Characteristic Fig. 12 - Dynamic Range of Sensor vs. tpi The typical application of the TSSP58P38 is a reflective sensor with analog information contained in its output. Such a sensor is evaluating the time required by the AGC to suppress a quasi continuous signal. The time required to suppress such a signal is longer when the signal is strong than when the signal is weak, resulting in a pulse length corresponding to the distance of an object from the sensor. This kind of analog information can be evaluated by a microcontroller. The absolute amount of reflected light depends much on the environment and is not evaluated. Only sudden changes of the amount of reflected light, and therefore changes in the pulse width, are evaluated using this application. Example of a signal pattern: trepeat = 500 ms tpi = 120 ms, 38 kHz Optical signal Response of the TSSP58P38 (strong reflection) Response of the TSSP58P38 (weak reflection) Rev. 1.4, 01-Sep-15 4 Document Number: 82476 THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 TSSP58P38 www.vishay.com Vishay Semiconductors Example for a sensor hardware: There should be no common window in front of the emitter and receiver in order to avoid crosstalk by guided light through the window. IR Receiver TSSP58P38 Emitter TSAL6200 The logarithmic characteristic of the AGC in the TSSP58P38 results in an almost linear relationship between distance and pulse width. Ambient light has also some impact to the pulse width of this kind of sensor, making the pulse shorter. Separation to avoid crosstalk by stray light inside the housing PACKAGE DIMENSIONS in millimeters 5 4.8 (4) 2.8 (5.55) 6.95 ± 0.3 8.25 ± 0.3 R2 0.9 1.1 30.5 ± 0.5 (1.54) 0.85 max. 0.7 max. 2.54 nom. 2.54 nom. 0.5 max. 1.2 ± 0.2 Marking area technical drawings according to DIN specifications Not indicated to lerances ± 0.2 Drawing-No.: 6.550-5263.01-4 Issue: 12; 16.04.10 19009 Rev. 1.4, 01-Sep-15 R2 5 Document Number: 82476 THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 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We confirm that all the products identified as being compliant to IEC 61249-2-21 conform to JEDEC JS709A standards. Revision: 02-Oct-12 1 Document Number: 91000