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TSL260, TSL261, TSL262 IR LIGHT TO VOLTAGE OPTICAL SENSORS
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D Integral Visible Light Cutoff Filter D Monolithic Silicon IC Containing D D D D D D D
Photodiode, Operational Amplifier, and Feedback Components Converts Light Intensity to Output Voltage High Irradiance Responsivity Typically 42 mV/(W/cm2) at p = 940 nm (TSL260) Low Dark (Offset) Voltage . . . 10 mV Max at 25C, VDD = 5 V Single-Supply Operation Wide Supply Voltage Range . . . 3 V to 9 V Low Supply Current . . . 800 A Typical at VDD = 5 V Advanced Linear CMOS Technology
PACKAGE (FRONT VIEW)
1
2
3
GND VDD
OUT
Description
The TSL260, TSL261, and TSL262 are light-to-voltage optical sensors, each combining a photodiode and a transimpedance amplifier (feedback resistor = 16 M, 8 M, and 2 M, respectively) on a single monolithic integrated circuit. The output voltage is directly proportional to the infrared light intensity (irradiance) on the photodiode. The TSL260, TSL261, and TSL262 are manufactured using advanced linear CMOS silicon-gate technology, which provides good amplifier offset-voltage stability and low power consumption.
Functional Block Diagram
- +
Voltage Output
Terminal Functions
TERMINAL NAME GND OUT VDD NO. 1 3 2 Output voltage Supply voltage DESCRIPTION Ground (substrate). All voltages are referenced to GND.
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800 Jupiter Road, Suite 205 S Plano, TX 75074 S (972) 673-0759
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TSL260, TSL261, TSL262 IR LIGHT TO VOLTAGE OPTICAL SENSORS
TAOS021 - MAY 2000
Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VDD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 V Output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA Duration of short-circuit current at (or below) 25C (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 s Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -25C to 85C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -25C to 85C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240C
NOTES: 1. All voltages are with respect to GND. 2. Output may be shorted to either supply.
Recommended Operating Conditions
MIN Supply voltage, VDD Operating free-air temperature, TA 3 0 NOM 5 MAX 9 70 UNIT V C
Electrical Characteristics at VDD = 5 V, TA = 25C, p = 940 nm, RL = 10 k (unless otherwise noted) (see Note 3)
PARAMETER VDARK VOM VO Dark voltage Maximum output TEST CONDITIONS Ee = 0 Ee = 2.6 mW/cm2 Ee = 48 W/cm2 Out ut Output voltage Ee = 87 W/cm2 Ee = 525 W/cm2 Ee = 48 W/cm2, TA = 0C to 70C Temperature coefficient of out ut voltage (VO) output Ee = 87 W/cm2, TA = 0C to 70C Ee = 525 W/cm2, TA = 0C to 70C Ne Irradiance responsivity See Note 4 Ee = 48
No load
TSL260 MIN 3.1 1 TYP 3 3.5 2 3 1 MAX 10 3.1 MIN
TSL261 TYP 3 3.5 2 3 1 MAX 10 3.1 MIN
TSL262 TYP 3 3.5 MAX 10 UNIT mV V
V 2 3
1 1 1 42 900 1600 900 1600 900 1600 A 23 3.8 mV/(W/cm2) mV/C
W/cm2,
IDD
Supply current
Ee = 87 W/cm2,
No load
Ee = 525 No load
W/cm2,
NOTES: 3. The input irradiance Ee is supplied by a GaAs infrared-emitting diode with p = 940 nm. 4. Irradiance responsivity is characterized over the range VO = 0.05 to 3 V.
Operating Characteristics at TA = 25C (see Figure 1)
TSL260 PARAMETER tr tf Vn Output pulse rise time Output pulse fall time Output noise voltage TEST CONDITIONS VDD = 5 V, VDD = 5 V, VDD = 5 V, p = 940 nm p = 940 nm f = 20 Hz MIN TYP 360 360 0.6 MAX MIN TSL261 TYP 90 90 0.5 MAX MIN TSL262 TYP 7 7 0.4 MAX UNIT s s V/Hz
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TSL260, TSL261, TSL262 IR LIGHT TO VOLTAGE OPTICAL SENSORS
TAOS021 - MAY 2000
PARAMETER MEASUREMENT INFORMATION
VDD Pulse Generator IRED (see Note A) TSL26x 1 TEST CIRCUIT - + RL Output (see Note B) 10% 90% 90% 10% 2 Ee Input 3 Output tr tf
VOLTAGE WAVEFORM
NOTES: A. The input irradiance is supplied by a pulsed GaAs infrared-emitting diode with the following characteristics: p = 940 nm, tr < 1 s, tf < 1 s. B. The output waveform is monitored on an oscilloscope with the following characteristics: tr < 100 ns, Zi 1 MHz, Ci 20 pF.
Figure 1. Switching Times
TYPICAL CHARACTERISTICS
OUTPUT VOLTAGE vs IRRADIANCE
10 VDD = 5 V p = 940 nm No Load TA = 25C 1 TSL261 1 0.9 0.8 Relative Responsivity TSL260 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.01 0.1 1 10 100 Ee - Irradiance - W/cm2 1000 0 600 700 800 900 1000 - Wavelength - nm 1100 TA = 25C
PHOTODIODE SPECTRAL RESPONSE
VO - Output Voltage - V
TSL262 0.1
Figure 2
Figure 3
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TSL260, TSL261, TSL262 IR LIGHT TO VOLTAGE OPTICAL SENSORS
TAOS021 - MAY 2000
TYPICAL CHARACTERISTICS
HIGH-LEVEL OUTPUT VOLTAGE vs SUPPLY VOLTAGE
9 VOM - Maximum Output Voltage - V 8 7 6 Ee = 2.6 p = 940 nm RL = 10 k TA = 25C mW/cm2 0.8 I DD - Supply Current - mA 1
SUPPLY CURRENT vs OUTPUT VOLTAGE
0.6
5 4
0.4
0.2 3 2 4 5 6 7 8 VDD - Supply Voltage - V 9 10
VDD = 5 V No Load (RL = ) TA = 25C 0 1 2 3 VO - Output Voltage - V 4
0
Figure 4
NORMALIZED OUTPUT VOLTAGE vs ANGULAR DISPLACEMENT
1
Figure 5
0.8 Normalized Output Voltage TSL260 TSL261, 262 0.6
0.4
0.2
0 80
60
40 20 0 20 40 - Angular Displacement
Optical Axis
60
80
Figure 6
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TSL260, TSL261, TSL262 IR LIGHT TO VOLTAGE OPTICAL SENSORS
TAOS021 - MAY 2000
APPLICATION INFORMATION
VDD
2 TSL26x Sensor 1 3
RP = 100 k Output
NOTE A: Pullup resistor extends linear output range to near VDD with minimal (several millivolts typical) effect on VDARK; particularly useful at low VDD (3 V to 5 V).
Figure 7. Pullup for Increased VOM
5V 5V 4.7 k
100 5V OP240
2 TSL261 Sensor 1 3
50-k Threshold 10 k 2 8 4 LM393 15 k 15 k
-
1 Output
3+
OPTEK part number NOTE A: Output 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 8. Short-Range Optical Switch With Hysteresis
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TSL260, TSL261, TSL262 IR LIGHT TO VOLTAGE OPTICAL SENSORS
TAOS021 - MAY 2000
APPLICATION INFORMATION
5V 5V BN301 27 k 7 3 k 6 TLC555 2 1 0.01 F 3 2N3906 2 4 8 TSL262 Sensor 1 TLC372 18 100 k 15-k Threshold 3 0.01 F 50 k 2 - 5V 8 4 1 Output 4.7 k 5V
3+
Stanley part number NOTE A: Output pulses low until beam is interrupted. Useful range is 1 ft to 20 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
100 0.01 F 2 OP295 or BN301 Light Shield TSL260 Sensor 1 10 k 6 2N3904 2 0.1 F 1 F + 3 0.1 F 5 3 4
6V 560 k
1 k 8 270 k 0.1 F
NE567
1
7
+
4.7 F

OPTEK part number Stanley part number NOTE A: Output goes low when light pulses from emitter are reflected back to sensor. Range is 6 in to 18 in depending upon object reflectance. Useful for automatic doors, annunciators, object avoidance in robotics, automatic faucets, and security systems.
Figure 10. Proximity Detector
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TSL260, TSL261, TSL262 IR LIGHT TO VOLTAGE OPTICAL SENSORS
TAOS021 - MAY 2000
APPLICATION INFORMATION
S1 9V R3 22
R1 680 7 6 2 + C1 1 F
8
4 3 2 R2 1 k 5 1
3 Q1 2N3904 1
D1 BN301 To Sensor
U1 TLC555
TRANSMITTER 6V 2 IN U4 TSL260 Sensor OUT COM 1 J1 3 C5 0.1 F 6V 6V R8 300 1 R5 7.5 k 3 5 6 Freq Trim R6 4.7 k C2 0.1 F 2 7 + C3 1 F C4 4.7 F + 4 1 16 2 PRE J 5 VCC 3 CLR U2 NE567 4 8 6V R7 4.7 k 2 TIL3010 4 1 3 U3 6 2 Q2 TIC225C AC Load R4 180 1 2 3
120 V 60 Hz
1
U5 1/2 SN74HC76 CLK Q
15 R9 1 k
Q3 2N3904
K
GND 13
RECEIVER
OPTEK part number
NOTE A: Single-channel remote control can be used to switch logic or light dc loads by way of U5 or ac loads by way of the optocoupler and triac as shown. Applications include ceiling fans, lamps, electric heaters, etc.
Figure 11. IR Remote Control
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TSL260, TSL261, TSL262 IR LIGHT TO VOLTAGE OPTICAL SENSORS
TAOS021 - MAY 2000
APPLICATION INFORMATION
6V 6V D1 OP295
IN U2 TLE2426 OUT COM 3 + Audio Input C1 1 F R1 10 k 7 + 6V U1 TLC271 5 6 1 8 4 R2 20 k R3 40 Q1 2N3904 D2 OP295
2_
TRANSMITTER 9V 2 IN U1 TSL261 Sensor OUT COM 1 9V R2 10 k
3 + C3 1 F VOL
C1 100 pF
IN U2 TLE2426 OUT COM 2 3 _ +
9V 7 6
R1 100 k + C2 47 F
U3A 4 NE5534
Output (to headphones)
RECEIVER
OPTEK part number NOTE A: Simple transmission of audio signal over short distances (<10 ft). Applications include wireless headphones, wireless-telephone headset, and wireless-headset intercom.
Figure 12. IR Voice-Band Audio Link
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TSL260, TSL261, TSL262 IR LIGHT TO VOLTAGE OPTICAL SENSORS
TAOS021 - MAY 2000
MECHANICAL DATA
The photodiode/amplifier chip is packaged in a black, infrared-transmissive plastic package. The integrated photodiode active area is typically 1.0 mm2 (0.0016 in2), 0.5 mm2 (0.00078 in2), and 0.26 mm2 (0.0004 in2) for the TSL260, TSL261, and TSL262, respectively.
2,125 (0.084) 1,875 (0.074)
0,75 (0.030) 0,65 (0.026)
2,25 (0.089) 1,75 (0.069) 1,25 (0.049) 0,75 (0.029)
0,635 (0.025) 0,4 (0.016) 1 2 3
PIN 1 GND PIN 2 VDD PIN 3 OUT
4,2 (0.165) 3,8 (0.150)
1 2 2,05 (0.081) 1,55 (0.061) 3
0,86 (0.034) 0,46 (0.018)
0,65 (0.026) 0,55 (0.022) 15,7 (0.619) 13,2 (0.520) 4,8 (0.189) 4,4 (0.173) 0,85 (0.033) 0,35 (0.014) 0,51 (0.02) 0,385 (0.015) 0,75 (0.030) R
3,05 (0.120) 2,55 (0.100) 4,85 (0.191) 4,35 (0.171) 1,75 (0.069) 1,25 (0.049) 4,35 (0.171) 3,85 (0.152)
2,74 (0.108) 2,34 (0.092) ALL LINEAR DIMENSIONS ARE IN MILLIMETERS AND PARENTHETICALLY IN INCHES
5,05 (0.199) 4,55 (0.179)
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TSL260, TSL261, TSL262 IR LIGHT TO VOLTAGE OPTICAL SENSORS
TAOS021 - MAY 2000
PRODUCTION DATA -- information in this document is current at publication date. Products conform to specifications in accordance with the terms of Texas Advanced Optoelectronic Solutions, Inc. standard warranty. Production processing does not necessarily include testing of all parameters.
NOTICE
Texas Advanced Optoelectronic Solutions, Inc. (TAOS) reserves the right to make changes to the products contained in this document to improve performance or for any other purpose, or to discontinue them without notice. Customers are advised to contact TAOS to obtain the latest product information before placing orders or designing TAOS products into systems. TAOS assumes no responsibility for the use of any products or circuits described in this document or customer product design, conveys no license, either expressed or implied, under any patent or other right, and makes no representation that the circuits are free of patent infringement. TAOS further makes no claim as to the suitability of its products for any particular purpose, nor does TAOS assume any liability arising out of the use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS, INC. PRODUCTS ARE NOT DESIGNED OR INTENDED FOR USE IN CRITICAL APPLICATIONS IN WHICH THE FAILURE OR MALFUNCTION OF THE TAOS PRODUCT MAY RESULT IN PERSONAL INJURY OR DEATH. USE OF TAOS PRODUCTS IN LIFE SUPPORT SYSTEMS IS EXPRESSLY UNAUTHORIZED AND ANY SUCH USE BY A CUSTOMER IS COMPLETELY AT THE CUSTOMER'S RISK.
TAOS, the TAOS logo, and Texas Advanced Optoelectronic Solutions are trademarks of Texas Advanced Optoelectronic Solutions Incorporated.
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