TSL260, TSL261, TSL262 IR LIGHT-TO-VOLTAGE OPTICAL SENSORS

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1 TSL0, TSL, TSL SOES00A DECEMBER 99 REVISED FEBRUARY 99 Integral Visible Light Cutoff Filter Monolithic Silicon IC Containing Photodiode, Operational Amplifier, and Feedback Components Converts Light Intensity to Voltage High Irradiance Responsivity Typically mv/(µw/cm ) at λ p = 90 nm (TSL0) Low Dark (Offset) Voltage... 0 mv Max at C, V DD = Single-Supply Operation Wide Supply Voltage Range... V to 9 V Low Supply Current...00 µa Typical at V DD = Advanced LinCMOS Technology description The TSL0, TSL, and TSL are light-to-voltage optical sensors each combining a photodiode and a transimpedance amplifier (feedback resistor = MΩ, MΩ, and MΩ, respectively) on a single monolithic integrated circuit. The output voltage is directly proportional to the infrared light intensity (irradiance) on the photodiode. The TSL0, TSL, and TSL utilize Texas Instruments silicon-gate LinCMOS technology, which provides good amplifier offset-voltage stability and low power consumption. mechanical data The photodiode/amplifier chip is packaged in a black, infrared-transmissive plastic package. The integrated photodiode active area is typically,0 mm (0.00 in ), 0. mm ( in ), and 0. mm (0.000 in ) for the TSL0, TSL, and TSL, respectively., (0.0),7 (0.07) 0, (0.0) 0, (0.0) 0,7 (0.00) 0, (0.0), (0.09),7 (0.09), (0.09) 0,7 (0.09) PIN GND PIN VDD PIN OUT, (0.), (0.0) 0, (0.0) 0, (0.0) 0, (0.0) 0, (0.0),0 (0.0), (0.0) 0, (0.0) 0, (0.0),7 (0.9), (0.0), (0.9), (0.7) 0,7 (0.00) R 0, (0.0) 0, (0.0),0 (0.0), (0.00),7 (0.09), (0.09), (0.9), (0.7), (0.7), (0.),0 (0.99), (0.79),7 (0.0), (0.09) ALL LINEAR DIMENSIONS ARE IN MILLIMETERS AND PARENTHETICALLY IN INCHES LinCMOS is a trademark of Texas Instruments Incorporated. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright 99, Texas Instruments Incorporated POST OFFICE BOX 0 DALLAS, TEXAS 7

2 TSL0, TSL, TSL SOES00A DECEMBER 99 REVISED FEBRUARY 99 functional block diagram Voltage absolute maximum ratings over operating free-air temperature range (unless otherwise noted) NOTES: Supply voltage, V DD (see Note ) V current, I O ±0 ma Duration of short-circuit current at (or below) C (see Note ) s Operating free-air temperature range, T A C to C Storage temperature range C to C Lead temperature, mm (/ inch) from case for 0 seconds C. All voltages are with respect to GND.. may be shorted to either supply. recommended operating conditions MIN NOM MAX UNIT Supply voltage, VDD 9 V Operating free-air temperature, TA 0 70 C electrical characteristics at V DD =, T A = C, λp = 90 nm, R L = 0 kω (unless otherwise noted) (see Note ) PARAMETER TEST TSL0 TSL TSL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX VDARK Dark voltage Ee = mv VOM Maximum output Ee =. mw/cm Ee = µw/cm VO voltage Ee = 7 µw/cm V Temperature coefficient of output voltage (VO) Ee = µw/cm Ee = µw/cm, TA = 0 C to 70 C Ee = 7 µw/cm, TA = 0 C to 70 C Ee = µw/cm, TA = 0 C to 70 C ± UNIT ± mv/ C Ne Irradiance responsivity See Note. mv/(µw/cm) Ee = µw/cm, No load IDD NOTES: Supply current Ee = 7 µw/cm, No load µa Ee = µw/cm, No load The input irradiance Ee is supplied by a GaAs infrared-emitting diode with λp = 90 nm.. Irradiance responsivity is characterized over the range VO = 0.0 to V. ± POST OFFICE BOX 0 DALLAS, TEXAS 7

3 TSL0, TSL, TSL operating characteristics at T A = C (see Figure ) SOES00A DECEMBER 99 REVISED FEBRUARY 99 PARAMETER TEST CONDITIONS TSL0 TSL TSL MIN TYP MAX MIN TYP MAX MIN TYP MAX UNIT tr pulse rise time VDD =, λp = 90 nm µs tf pulse fall time VDD =, λp = 90 nm µs Vn noise voltage VDD =, f = 0 Hz µv/ Hz PARAMETER MEASUREMENT INFORMATION Pulse Generator IRED (see Note A) VDD TSLx RL Input Ee tr 90% 90% tf TEST CIRCUIT (see Note B) 0% 0% VOLTAGE WAVEFORM NOTES: A. The input irradiance is supplied by a pulsed GaAs infrared-emitting diode with the following characteristics: λp = 90 nm, tr < µs, tf < µs. B. The output waveform is monitored on an oscilloscope with the following characteristics: tr < 00 ns, Zi MHz, Ci 0 pf. Figure. Switching Times TYPICAL CHARACTERISTICS Voltage V VO 0 0. VDD = λp = 90 nm No Load TA = C OUTPUT VOLTAGE vs IRRADIANCE TSL0 TSL TSL Relative Responsivity PHOTODIODE SPECTRAL RESPONSE TA = C Ee Irradiance µw/cm λ Wavelength nm Figure Figure POST OFFICE BOX 0 DALLAS, TEXAS 7

4 TSL0, TSL, TSL SOES00A DECEMBER 99 REVISED FEBRUARY 99 TYPICAL CHARACTERISTICS HIGH-LEVEL OUTPUT VOLTAGE vs SUPPLY VOLTAGE SUPPLY CURRENT vs OUTPUT VOLTAGE Maximum Voltage V V OM 9 7 Ee =. mw/cm λp = 90 nm RL = 0 kω TA = C 7 9 VDD Supply Voltage V 0 Supply Current ma I DD VDD = No Load (RL = ) TA = C 0 0 VO Voltage V Figure Figure NORMALIZED OUTPUT VOLTAGE vs ANGULAR DISPLACEMENT Normalized Voltage TSL0 TSL, Optical Axis θ Angular Displacement Figure POST OFFICE BOX 0 DALLAS, TEXAS 7

5 TSL0, TSL, TSL APPLICATION INFORMATION SOES00A DECEMBER 99 REVISED FEBRUARY 99 VDD TSLx RP = 00 kω NOTE A: Pullup resistor extends linear output range to near VDD with minimal (several millivolts typical) effect on VDARK; particularly useful at low VDD ( V to ). Figure 7. Pullup for Increased V OM 00 Ω OP0 TSL 0-kΩ Threshold 0 kω LM9.7 kω kω kω OPTEK part number NOTE A: goes high when beam is interrupted; working distance is several inches or less. Intended for use as optical-interrupter switch or reflective-object sensor. Figure. Short-Range Optical Switch With Hysteresis POST OFFICE BOX 0 DALLAS, TEXAS 7

6 TSL0, TSL, TSL SOES00A DECEMBER 99 REVISED FEBRUARY 99 APPLICATION INFORMATION 7 kω kω 0.0 µf 7 TLC BN0 N90 Ω TSL 0.0 µf 0 kω TLC7 00 kω.7 kω -kω Threshold Stanley part number NOTE A: pulses low until beam is interrupted. Useful range is ft to 0 ft; can be extended with lenses. This configuration is suited for object detection, safety guards, security systems, and automatic doors. Figure 9. Pulsed Optical-Beam Interrupter 00 Ω 0 kω OP9 or BN0 Light Shield N90 TSL0 0 kω 0. µf 0. µf 0.0 µf kω NE7 7 µf 70 kω 0. µf.7 µf OPTEK part number Stanley part number NOTE A: goes low when light pulses from emitter are reflected back to sensor. Range is in to in depending upon object reflectance. Useful for automatic doors, annunciators, object avoidance in robotics, automatic faucets, and security systems. Figure 0. Proximity Detector POST OFFICE BOX 0 DALLAS, TEXAS 7

7 TSL0, TSL, TSL APPLICATION INFORMATION SOES00A DECEMBER 99 REVISED FEBRUARY 99 S 9 V R Ω R 0 Ω 7 U TLC R kω Q N90 D BN0 To C µf TRANSMITTER IN U TSL0 OUT COM Freq Trim R 7. kω R.7 kω C 0. µf U NE7 R7.7 kω R 00 Ω TIL00 U AC Load J R 0 Ω Q TICC 0 V 0 Hz C 0. µf C C µf.7 µf 7 PRE VCC CLR J U / SN7HC7 CLK Q K GND R9 kω Q N90 OPTEK part number RECEIVER NOTE A: Single-channel remote control can be used to switch logic or light dc loads by way of U or ac loads by way of the optocoupler and triac as shown. Applications include ceiling fans, lamps, electric heaters, etc. Figure. IR Remote Control POST OFFICE BOX 0 DALLAS, TEXAS 7 7

8 TSL0, TSL, TSL SOES00A DECEMBER 99 REVISED FEBRUARY 99 APPLICATION INFORMATION IN D OP9 Audio Input U TLE C µf OUT COM R 0 kω 7 _ U TLC7 R 0 kω R 0 Ω D OP9 Q N90 TRANSMITTER 9 V IN U TSL OUT COM 9 V R 0 kω C µf VOL C 00 pf IN U TLE OUT COM 9 V _ 7 UA NE R 00 kω C 7 µf (to headphones) OPTEK part number RECEIVER NOTE A: Simple transmission of audio signal over short distances (<0 ft). Applications include wireless headphones, wireless-telephone headset, and wireless-headset intercom. Figure. IR Voice-Band Audio Link POST OFFICE BOX 0 DALLAS, TEXAS 7

9 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ( CRITICAL APPLICATIONS ). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER S RISK. In order to minimize risks associated with the customer s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI s publication of information regarding any third party s products or services does not constitute TI s approval, warranty or endorsement thereof. Copyright 99, Texas Instruments Incorporated

TSL260, TSL261, TSL262 IR LIGHT-TO-VOLTAGE OPTICAL SENSORS

TSL260, TSL261, TSL262 IR LIGHT-TO-VOLTAGE OPTICAL SENSORS TSL0, TSL, TSL SOES00A DECEMBER 99 REVISED FEBRUARY 99 Integral Visible Light Cutoff Filter Monolithic Silicon IC Containing Photodiode, Operational Amplifier, and Feedback Components Converts Light Intensity