Thermopile with integrated signal processing circuit in SMD housing Description The PerkinElmer A2TPMI® is a versatile infrared thermopile sensor with an integrated configurable ASIC for signal processing and ambient temperature compensation. This integrated infrared module senses the thermal radiation emitted by objects and converts this to an analog voltage. The A2TPMI is delivered fully factory calibrated and adapted to the customer specification. Therefore only three pins are necessary for operation: object output voltage, 5 V supply voltage, and ground. As compared to discrete sensors, the integrated sensor modules of the A2TPMI series feature several advantages: - Due to integration of sensor and electronic into the housing, the A2TPMI is robust and insensitive to environmental influences like pcb contamination (leakage currents), humidity and electromagnetic interference. The compact ceramic SMD housing additionally offers a range of advantages over a classical TO-housing: - Automated assembly is possible. - Smaller size - Superior thermal properties, allowing the sensor to operate reliably in challenging environments with thermal gradients and ambient temperature changes. D A T A S H E E T S EN SO R S O L U T IO N S A2TPMI® 23S Features and Benefits • Smart thermopile sensor with integrated signal processing. • Can be adapted to your specific measurement task. • Integrated, calibrated ambient temperature sensor. • Output signal ambient temperature compensated. • Fast reaction time. • Different optics and IR filters available. • Digital serial interface for calibration and adjustment purposes. • Analog front end / back end, digital signal processing. • E2PROM for configuration and data storage. • Configurable comparator with high / low signal for remote temperature threshold control. • Small SMD package. Applications - Internal offset correction of the amplifier. - A factory calibrated ambient temperature sensor that allows for precise internal ambient temperature compensation. - The amplification of the highly sensitive thermopile signal in the micro- to millivolt range is performed by a high resolution programmable low noise chopper amplifier. - Two configurable comparators can optionally be used to enhance the functionality. This allows employing the A2TPMI as a temperature dependent switch for alarm purposes. www.optoelectronics.perkinelmer.com • Miniature remote non-contact temperature measurement (pyrometer). • Temperature dependent switch for alarm or thermostatic applications. • Residential, commercial, automotive, and industrial climate control. • Household appliances featuring a remote temperature control like microwave oven, toaster, hair dryer. • Temperature control in laser printers and copiers. DATASHEET Table of Contents Functional Diagram 3 Absolute Maximum Ratings 3 Electrical Characteristics 4 AC Characteristics 4 Thermopile Characteristics 4 VTobj / VTamb Characteristics 4 Optical Characteristics 4 Soldering 4 Packaging Information 4 Quality Statement 4 Liability Policy 4 www.optoelectronics.perkinelmer.com A2TPMI® 23S 2 DATASHEET Functional Diagram Offset correction Switch C + V1 TP + V2 VTobj Switch A Signalprocessor PTAT Vref Comp 1 Comp 2 Serial Interface (SCLK, SDAT) Switch B TP: PTAT: VTamb / VRef Control Unit Thermopile Temperature Sensor VTobj : VTamb : VRef : Switch D Output voltage object temperature Output voltage ambient temperature 1.225 V reference voltage Absolute Maximum Ratings Parameter Min MAX Supply voltage VDD -0.3 V +6.5 V Storage temperature range Note 1) Operating temperature range Voltage at all inputs and outputs Note 2) Current at input pins Note 2) ESD tolerance Note 3) -40° C -25° C -0.3 V 100° C 100° C VDD +0.3 V +/- 5 mA 2.5 kV Note 1: Extension to 120° C for limited periods of several minutes possible. Note 2: Limiting input pin current is only necessary for input voltages that exceed absolute maximum input voltage ratings. Note 3: Human body model, 1.5 kΩ in series with 100 pF. All pins rated per method 3015.7 of MIL-STD-883. Static-sensitive device. Unused devices must be stored in conductive material. Protect devices from static discharge and static fields. Stresses above those listed under “Absolute maximum ratings” may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Precautions should be taken to avoid reverse polarity of power supply. Reversed polarity of power supply results in a destroyed unit. Do not expose the sensors to aggressive detergents such as freon, trichlorethylen, etc. Optical windows (e.g. filter, lens) may be cleaned with alcohol and a cotton swab. www.optoelectronics.perkinelmer.com A2TPMI® 23S 3 DATASHEET Electrical Characteristics Symbol Parameter Min Typ Max Unit Conditions 4.5 5 1.5 5.5 2 V mA RL > 1 MΩ VDD –0.25 V 100 V Ω kΩ pF mA mA Sourcing Sinking 0.5 V V Output current ≤ 2 mA Output current ≥ 2 mA 1.227 ±100 V ppm K-1 RL > 1 MΩ, Tamb = 25° C Max 120 1 75 150 Unit nV/√Hz s ms ms Conditions rms value Max Unit Conditions Power Supply VDD IDD Supply voltage Supply current Outputs VTobj / VTamb VO RO RL CL ISC Output voltage swing Output resistance Resistive output load Capacitive output load Output short circuit current 0.25 50 100 6 13 500 Iout: -100 µA … +100 µA Serial Interface SDAT, SCLK VoL VoH Low level output voltage High level output voltage VDD-0.6 V Reference Voltage VRef TCVRef Reference voltage Temperature coefficient of reference voltage 1.223 1.225 ±30 Unless otherwise indicated, all limits specified for Tamb = 25° C, VDD = +5 V AC Characteristics Symbol Parameter Min Typ InN V1 Input referred voltage noise tStrt Response time after power on tlat Latency time for VTobj Response time 90 tresp Unless otherwise indicated, all limits specified for Tamb = 25° C, VDD = +5 V Thermopile Characteristics Symbol Parameter Min Typ 2-type chip S N τ Sensitive (absorber) area Noise voltage Time constant 0,2 42 15 mm2 nV/√Hz ms VTobj / VTamb Characteristics The VTobj and the VTamb characteristics of thermopile sensors depend not only on object and ambient temperature but on several other factors like object size to spot size relation, ambient temperature compensation behaviour or optical filter characteristics. Therefore it is not possible to specify a general VTobj and VTamb characteristic. Those characteristics will be specified application specific in a separate customer specification. www.optoelectronics.perkinelmer.com A2TPMI® 23S 4 DATASHEET Optical Characteristics Symbol Parameter Min Typ Field of view 120 Optical axis 0 Max +/- 10 Unit Conditions degree At 50% relative output signal degree 100 90 80 Relative Responsivity [%] 70 60 Sensor Orientation A 50 40 30 20 10 0 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Angle of Incidence [degree] Figure 1 Typical Field of View Curve (Sensor Orientation A) 100 90 80 Relative Responsivity [%] 70 60 Sensor Orientation B 50 40 30 20 10 0 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Angle of Incidence [degree] Figure 2 Typical Field of View Curve (Sensor Orientation B) www.optoelectronics.perkinelmer.com A2TPMI® 23S 5 DATASHEET Filter Parameters Symbol Parameter Min Typ TA Average transmittance 75 > 77 TA Average transmittance λ (5 %) Cut on wavelength 5.2 Max Unit Conditions Wavelength range from 7.5 µm to 13.5 µm Wavelength range < 5 µm % < 0.5 % 5.8 µm 5.5 At 25°C 100 90 80 Transmittance [%] 70 60 50 40 30 20 10 0 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Wavelength [µm] Figure 3 Transmission Curve for PerkinElmer Standard Filter Soldering The A2TPMI 23S is a lead-free component and fully complies with the RoHS regulations, especially with existing roadmaps of lead-free soldering. Reflow soldering is recommended. A typical lead free reflow profile is shown in figure 4. Specific reflow soldering parameters depend on the solder alloy used. The device meets MSL3 at 245 °C according to JEDEC standard. 300 Peak Temperature 235 - 255 °C 250 Temperature [°C] 200 Reflow Zone time above ~217 °C typical 60 - 75 s Soaking Zone typical 60 - 90 s 150 100 <2.5 °C/s Pre-heating Zone 2 - 4 min max 50 0 0 30 60 90 120 150 180 210 240 270 300 330 Time [s] Figure 4 Typical Lead Free Reflow Profile www.optoelectronics.perkinelmer.com A2TPMI® 23S 6 DATASHEET Packaging Information www.optoelectronics.perkinelmer.com A2TPMI® 23S 7 DATASHEET Quality Statement PerkinElmer Optoelectronics is an ISO 9001:2002 and ISO/TS 16949:2002 certified manufacturer. All devices employing PCB assemblies are manufactured according IPC-A-610 guidelines. Liability Policy The contents of this document are subject to change without notice and customers should consult with PerkinElmer Optoelectronics sales representatives before ordering. Customers considering the use of PerkinElmer Optoelectronics thermopile devices in applications where failure may cause personal injury or property damage, or where extremely high levels of reliability are demanded, are requested to discuss their concerns with PerkinElmer Optoelectronics sales representatives before such use. The Company’s responsibility for damages will be limited to the repair or replacement of defective product. As with any semiconductor device, thermopile sensors or modules have a certain inherent rate of failure. To protect against injury, damage or loss from such failures, customers are advised to incorporate appropriate safety design measures into their product. North America Customer Support Hub 22001 Dumberry Road Vaudreuil-Dorion, Québec Canada J7V 8P7 Telephone:(+1) 450-424-3300 (+1) 866-574-6786 (toll-free) Fax: (+1) 450-424-3345 Email: [email protected] European Headquarters Wenzel-Jaksch-Strasse 31 65199 Wiesbaden, Germany Telephone: (+49)611-492-247 Fax: (+49)611-492-170 Email: [email protected] Asia Headquarters 47 Ayer Rajah Crescent #06-12 Singapore 139947 Telephone: (+65)6775-2022 (+65)67704-366 Fax: (+65)6775-1008 Email: [email protected] For a complete listing of our global offices, visit www.optoelectronics.perkinelmer.com ©2008 PerkinElmer, Inc. All rights reserved. The PerkinElmer logo and design are registered trademarks of PerkinElmer, Inc. TPMI® is a trademark of PerkinElmer, Inc. or its subsidiaries, in the United States and other countries. All other trademarks not owned by PerkinElmer, Inc. or its subsidiaries that are depicted herein are the property of their respective owners. PerkinElmer reserves the right to change this document at any time without notice and disclaims liability for editorial, pictorial or typographical errors. 600260_01 DTS0408 www.optoelectronics.perkinelmer.com A2TPMI® 23S 8