Philips Components RPY109B/ P2105 blue binder, tab 71 SINGLE ELEMENT PYROELECTRIC INFRARED SENSOR Application: Particularly suitable for gas analysis systems such as that used for analysing vehicle exhausts. Element: Single, with 2 x 2 mm square sensitive area. Electrical: The sensor includes a single J-FET impedance converting amplifier. Window: Potassium bromide (KBr). Ordering: See page 4 for ordering details. MECHANICAL DATA Dimensions in mm SOT-49G (TO-39 modified to incorporate an infrared window) 68 12.7 6.1 min do not bend leads #115 fe within this distance req Th | =I | 2 x 2 sensitive area element plane 7 24 fieid of view ! x xand yoy a M2773 Sensitive area 2x 2 square Fig.1. PHILIPS | [ omRPY109B/ P2105 PRODUCT SAFETY Modern high technology materials have been used in the manufacture of this device to ensure high performance. Some of these materials are toxic in certain circumstances. Mechanical or electrical damage is unlikely to give rise to any hazard, but toxic vapours may be generated if the device is heated to destruction. Disposal of large quantities should therefore be carried out in accordance with the latest local legislation. SOLDERING 1. When making soldered connections to the leads, a thermal shunt should be used. 2. it is essential that any mains operated soldering iron used should be both screened and earthed. Failure to observe these precautions may lead to the introduction of line voltages and possible damage to the device. (See operating note 5). RATINGS Limiting values in accordance with the Absolute Maximum System (IEC134). Supply voltage max. 30 Vv Temperature, operating range 20 to +70 C Temperature, storage range 20 to +70 oC Lead soldering temperature, > 6 mm from header, tsjg <3 s +350 oC OPERATING CONDITIONS min. max. Voltage (operating note 3) 3 10 Vv Frequency (see page 5) 10 100 Hz OPERATING NOTES 1. The sensor is supplied with a black plastic cap to protect the window. This cap must be removed before operation. 2. The case potential must not be allowed to become positive with respect to the other two terminals. 3. The sensor will operate outside the quoted range but may have a degraded performance. 4. To avoid the possibility of optical microphony, the sensor must be firmly mounted. 5. To avoid the possiblity of electrostatic damage, precautions similar to those used with CMOS devices are necessary, namely: a) Earthed wrist straps should be worn. b) Table tops or other working surfaces should be conductive and earthed. c) Anti-static clothing should be worn, (no wool, silk or synthetic fibres). d) No electrical testing should be carried out without specific, approved and written test procedures. e) To prevent the development of damaging transient voltages, devices should not be inserted or removed from test fixtures with power applied. 6. An increase in the temperature of the element will produce a positive going signal at the output. 7. Use the recommended circuit for low noise operation. 8. For simplicity of operation, a source follower may be used where noise is not a problem. This may be achieved with a 100 kQ resistor between source and 2g with the positive supply taken to the drain terminal. This will give a voltage gain of approximately 0.9. June 1989 PHILIPS DiSingle element pyroelectric infrared detector RPY109B/ P2105 CHARACTERISTICS (at Tamb = 22 OC + 3 OC and with recommended circuit) min. typ. max. Spectral response 1.0 - 25 um Responsivity (500 K, 10) 60 90 _ vw:! NEP (500 K, 10, 1) - 1.4x 10 3x 10 WHz?! D* (500 K, 10, 1) - 1.4 x 108 - emHz2W"! Sensitive area nominal 2 x 2 mm Field of view (x-x and y-y axis) Angle between the normal to the edge of the sensitive area and the edge of the window: nominal 30 degrees FET Characteristics (at Tamp = 22 OC + 3 C) min. typ. max. Gate-source cut-off voltage Ip = 0.1 pA, Vpg = 6 V VP(GS) ~1.4 _ 0.5 Vv Transfer conductance Vos = 0, Vps =6 V, f= 1 kHz Sfso 1.3 _ - mAVv"! RECOMMENDED CIRCUIT |, drain AY > | ' NM | gate ' TT = = \ | element ' F) Y 2g LU. source output 100k22 ' | | t envelope OV M1480 Fig.2. a PHILIPS June 1989RPY109B/ P2105 DEFINITIONS 1. Responsivity VW"! This is the ratio of the RMS signal in volts to the RMS value of the incident, chopped radiant power. Noise Equivalent Power (NEP) WHz-2 This is the RMS value of the incident, chopped radiant power necessary to produce an RMS signal to the RMS noise ratio of unity. The RMS noise refers to the value calculated for unit square root bandwidth VHz%, D*, emHz4w-! This is a figure of merit which is defined as the RMS signal to noise ratio in a 1 Hz bandwidth per unit RMS incident radiant power per square root of sensor area. Unless otherwise stated, it is assumed that the sensor field of view is hemispherical (2 7 steradian). D* may be defined in response to a black body source as D* (t, f, 1) where t is the temperature of the reference black body, f is the modulation frequency in Hz and 1 represents unity bandwidth. MECHANICAL AND ENVIRONMENTAL STANDARDS As part of the Quality Assurance programme, the sensors will be assessed at regular intervals against the requirements of the following IEC standards. Test Severity Duration IEC 68-2-3 Ca Damp Heat, steady state +20 C, 70% RH 96 hours 68-2-20 Ta Solderability +235 C, 1.5 mm 5 seconds from header 68-2-21 Ub Lead Fatigue 4 cycles ~ 68-2-14 Nb Change of temperature 20 C to +70 C 5 cycles 68-2-27. Ea Shock 490 ms? 3 pulses in 11 ms pulse 6 orientations 68-2-6 Fc(B4) Vibration, swept frequency 10 Hz to 55 Hz 1 sweep in three 0.75 mm displacement orientations 68-2-20 Tb Resistance to Solder Heat +350 C, 6 mm 3 seconds from header TYPE IDENTIFICATION The RPY 109B/P2105 is a device with a potassium bromide window. MARKING Each device will be marked with the part number and date code. e.g. P2105 G8905 ORDERING INFORMATION When ordering products from this range, specify the quantity and the complete type number. 2.9. 10 off RPY 109B/P2105 Orders should be addressed to your local Philips Organisation. June 1989 PHILIPS DySingle element pyroelectric infrared detector RPY109B/ P2105 M3289 100 transmission (%) 78 50 25 1 10 102 wavelength (ym) Fig.3 Potassium bromide window transmission characteristics. eS PHILIPS June 1989RPY109B/ P2105 M3290 10 D* (cm Hz 1/2 wot) 108 responsivity (vw-t) 102 10 10-9 NEP (WHz~"/2) 10-10 1 10 102 frequency (Hz) Fig.4 RPY 109B/P2105, typical 500 K black body performance as a function of frequency; amplifier gain x 4.8. M89-1975/RC June 1989 PHILIPS ey