ETC TSL261

TSL260, TSL261, TSL262
IR LIGHTTOVOLTAGE OPTICAL SENSORS
TAOS021 – MAY 2000
Integral Visible Light Cutoff Filter
Monolithic Silicon IC Containing
PACKAGE
(FRONT VIEW)
Photodiode, Operational Amplifier, and
Feedback Components
Converts Light Intensity to Output Voltage
High Irradiance Responsivity Typically
42 mV/(µW/cm2) at λp = 940 nm (TSL260)
Low Dark (Offset) Voltage . . . 10 mV
Max at 25°C, VDD = 5 V
Single-Supply Operation
Wide Supply Voltage Range . . . 3 V to 9 V
Low Supply Current . . . 800 µA Typical at
VDD = 5 V
Advanced Linear CMOS Technology
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 MΩ, 8 MΩ, and 2 MΩ, 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
DESCRIPTION
NO.
GND
1
Ground (substrate). All voltages are referenced to GND.
OUT
3
Output voltage
VDD
2
Supply voltage
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Copyright 2000, TAOS Inc.
Texas Advanced Optoelectronic Solutions Inc.
800 Jupiter Road, Suite 205 Plano, TX 75074 (972) 673-0759
1
TSL260, TSL261, TSL262
IR LIGHTTOVOLTAGE 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) 25°C (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 s
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25°C to 85°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25°C to 85°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240°C
NOTES: 1. All voltages are with respect to GND.
2. Output may be shorted to either supply.
Recommended Operating Conditions
MIN
NOM
MAX
Supply voltage, VDD
3
5
9
UNIT
V
Operating free-air temperature, TA
0
70
°C
Electrical Characteristics at VDD = 5 V, TA = 25°C, λp = 940 nm, RL = 10 kΩ (unless otherwise noted)
(see Note 3)
TEST
CONDITIONS
PARAMETER
VDARK
Dark voltage
Ee = 0
VOM
Maximum output
Ee = 2.6 mW/cm2
TSL260
TYP
MAX
3
10
3.1
3.5
1
2
Ee = 48 µW/cm2
VO
TSL261
MIN
TYP
MAX
3
10
3.1
3.5
1
2
MIN
TYP
MAX
3
10
3.1
3.5
1
2
Temperature coefficient
of out
output
ut voltage (VO)
Irradiance responsivity
±1
mV/°C
Ee = 48
No load
IDD
Supply current
±1
42
µW/cm2,
900
23
mV/(µW/cm2)
3.8
1600
Ee = 87 µW/cm2,
900
No load
Ee = 525
No load
3
±1
Ee = 87 µW/cm2,
TA = 0°C to 70°C
See Note 4
V
V
Ee = 525 µW/cm2,
TA = 0°C to 70°C
Ne
mV
3
Ee = 525 µW/cm2
Ee = 48 µW/cm2,
TA = 0°C to 70°C
UNIT
3
Ee = 87 µW/cm2
Output
Out
ut voltage
TSL262
MIN
µA
1600
µW/cm2,
900
1600
NOTES: 3. The input irradiance Ee is supplied by a GaAs infrared-emitting diode with λp = 940 nm.
4. Irradiance responsivity is characterized over the range VO = 0.05 to 3 V.
Operating Characteristics at TA = 25°C (see Figure 1)
TSL260
PARAMETER
TEST CONDITIONS
MIN
TYP
TSL261
MAX
MIN
TYP
TSL262
MAX
MIN
TYP
MAX
UNIT
tr
Output pulse rise time
VDD = 5 V,
λp = 940 nm
360
90
7
µs
tf
Output pulse fall time
VDD = 5 V,
λp = 940 nm
360
90
7
µs
Vn
Output noise voltage
VDD = 5 V,
f = 20 Hz
0.6
0.5
0.4
Copyright 2000, TAOS Inc.
2
µV/√Hz
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TSL260, TSL261, TSL262
IR LIGHTTOVOLTAGE OPTICAL SENSORS
TAOS021 – MAY 2000
PARAMETER MEASUREMENT INFORMATION
VDD
Pulse
Generator
Ee
2
Input
–
IRED
(see Note A)
3
tf
tr
Output
+
90%
RL
TSL26x
1
Output
(see Note B)
10%
90%
10%
VOLTAGE WAVEFORM
TEST CIRCUIT
NOTES: A. The input irradiance is supplied by a pulsed GaAs infrared-emitting diode with the following characteristics: λp = 940 nm, tr < 1 µs,
tf < 1 µs.
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
PHOTODIODE SPECTRAL RESPONSE
1
VDD = 5 V
λp = 940 nm
No Load
TA = 25°C
0.9
TSL261
TA = 25°C
0.8
TSL260
Relative Responsivity
VO – Output Voltage – V
10
1
TSL262
0.1
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.01
0.1
1
10
100
Ee – Irradiance – µW/cm2
1000
0
600
700
Figure 2
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800
900
1000
λ – Wavelength – nm
1100
Figure 3
Copyright 2000, TAOS Inc.
3
TSL260, TSL261, TSL262
IR LIGHTTOVOLTAGE OPTICAL SENSORS
TAOS021 – MAY 2000
TYPICAL CHARACTERISTICS
SUPPLY CURRENT
vs
OUTPUT VOLTAGE
HIGH-LEVEL OUTPUT VOLTAGE
vs
SUPPLY VOLTAGE
1
9
Ee = 2.6
λp = 940 nm
RL = 10 kΩ
TA = 25°C
8
0.8
I DD – Supply Current – mA
VOM – Maximum Output Voltage – V
mW/cm2
7
6
5
4
0.6
0.4
VDD = 5 V
No Load
(RL = ∞)
TA = 25°C
0.2
3
2
4
5
6
7
8
VDD – Supply Voltage – V
9
0
10
0
1
2
3
VO – Output Voltage – V
Figure 4
4
Figure 5
NORMALIZED OUTPUT VOLTAGE
vs
ANGULAR DISPLACEMENT
1
TSL260
TSL261, 262
0.6
Optical Axis
Normalized Output Voltage
0.8
0.4
0.2
0
80°
60°
40° 20°
0°
20° 40°
θ – Angular Displacement
60°
80°
Figure 6
Copyright 2000, TAOS Inc.
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TSL260, TSL261, TSL262
IR LIGHTTOVOLTAGE OPTICAL SENSORS
TAOS021 – MAY 2000
APPLICATION INFORMATION
VDD
2
RP = 100 kΩ
3
TSL26x
Sensor
Output
1
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
100 Ω
2
5V
TSL261
Sensor
OP240†
4.7 kΩ
50-kΩ
Threshold
3
10 kΩ
2
–
8
1
Output
3 +
4
1
LM393
15 kΩ
15 kΩ
†
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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Copyright 2000, TAOS Inc.
5
TSL260, TSL261, TSL262
IR LIGHTTOVOLTAGE OPTICAL SENSORS
TAOS021 – MAY 2000
APPLICATION INFORMATION
5V
5V
5V
BN301†
2
27 kΩ
4
7
3 kΩ
50 kΩ
8
TSL262
Sensor
3
6
TLC555
2N3906
2
3
2
5V
–
8
1
Output
3 +
0.01 µF
4.7 kΩ
4
1
TLC372
1
18 Ω
0.01 µF
100 kΩ
15-kΩ
Threshold
†
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
6V
100 Ω
560 kΩ
0.01 µF
2
OP295†
or
BN301‡
TSL260
Sensor
Light
Shield
4
3
1 kΩ
3
8
0.1 µF
1
NE567
5
1
270 kΩ
0.1 µF
10 kΩ
6
2N3904
2
0.1 µF
1 µF
+
7
+
4.7 µF
†
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
Copyright 2000, TAOS Inc.
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TSL260, TSL261, TSL262
IR LIGHTTOVOLTAGE OPTICAL SENSORS
TAOS021 – MAY 2000
APPLICATION INFORMATION
S1
R3
22 Ω
9V
R1
680 Ω
8
4
7
6
3
2
Q1
2N3904
R2
1 kΩ
U1
TLC555
2
+
D1
BN301†
3
To Sensor
1
5
C1
1 µF
1
TRANSMITTER
6V
2
IN
U4
TSL260
Sensor
OUT
J1
C5
0.1 µF
COM
1
R4
180 Ω
R8
300 Ω
6V
3
R5
7.5 kΩ
R6
4.7 kΩ
C2
0.1 µF
U2
NE567
1
120 V
60 Hz
2
Q2
TIC225C
2
8
5
6
Freq
Trim
R7
4.7 kΩ
1
6
U3
1
4
3
AC Load
6V
3
2
4
TIL3010
1
3
6V
2
7
+
C3
1 µF
2
C4
4.7 µF
+
4
PRE
J
VCC
3
CLR
U5
1/2 SN74HC76
CLK
Q
1
16
5
K
15
R9
1 kΩ
GND
13
Q3
2N3904
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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Copyright 2000, TAOS Inc.
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TSL260, TSL261, TSL262
IR LIGHTTOVOLTAGE OPTICAL SENSORS
TAOS021 – MAY 2000
APPLICATION INFORMATION
6V
6V
D1
OP295†
IN
U2
TLE2426
D2
OP295†
6V
OUT
U1
TLC271
COM
7
3
+
Audio
Input
5
+
6
2 _
1
8
R1
10 kΩ
C1
1 µF
Q1
2N3904
4
R3
40 Ω
R2
20 kΩ
TRANSMITTER
9V
2
IN
U1
TSL261
Sensor
OUT
COM
3
+
1
9V
R2
10 kΩ
C3
1 µF
C1
100 pF
VOL
9V
IN
2
U2
TLE2426
_
R1
100 kΩ
7
6
3
OUT
COM
+
U3A
4 NE5534
+
C2
47 µF
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 LIGHTTOVOLTAGE 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)
0,635 (0.025)
0,4 (0.016)
PIN 1 GND
PIN 2 VDD
PIN 3 OUT
1,25 (0.049)
0,75 (0.029)
1
2
4,2 (0.165)
3,8 (0.150)
3
1
2
0,86 (0.034)
0,46 (0.018)
15,7 (0.619)
13,2 (0.520)
3,05 (0.120)
2,55 (0.100)
4,8 (0.189)
4,4 (0.173)
4,85 (0.191)
4,35 (0.171)
0,85 (0.033)
0,35 (0.014)
0,51 (0.02)
0,385 (0.015)
3
2,05 (0.081)
1,55 (0.061)
0,65 (0.026)
0,55 (0.022)
0,75 (0.030) R
1,75 (0.069)
1,25 (0.049)
4,35 (0.171)
3,85 (0.152)
5,05 (0.199)
4,55 (0.179)
2,74 (0.108)
2,34 (0.092)
ALL LINEAR DIMENSIONS ARE IN MILLIMETERS AND PARENTHETICALLY IN INCHES
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Copyright 2000, TAOS Inc.
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TSL260, TSL261, TSL262
IR LIGHTTOVOLTAGE 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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