Datasheet TSL262, TSL261, TSL260 Datasheet (TAOS)



TSL260, TSL261, TSL262

IR LIGHTTOVOLTAGE 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

321

 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

GND

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.

DD

OUTV

Functional Block Diagram

– +

Terminal Functions

TERMINAL

NAME NO.

GND 1 Ground (substrate). All voltages are referenced to GND. OUT 3 Output voltage V

DD

2 Supply voltage

Voltage Output

DESCRIPTION

www.taosinc.com

Texas Advanced Optoelectronic Solutions Inc.



800 Jupiter Road, Suite 205  Plano, TX 75074  (972) 673-0759



Copyright  2000, TAOS Inc.

1

TSL260, TSL261, TSL262

TEST

VOOut ut voltage

V

of out ut voltage (VO)

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) 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.

Recommended Operating Conditions

Supply voltage, V Operating free-air temperature, T

Electrical Characteristics at VDD = 5 V , TA = 25°C, λp = 940 nm, RL = 10 kΩ (unless otherwise noted) (see Note 3)

V V

V

N

I

DD

NOTES: 3. The input irradiance Ee is supplied by a GaAs infrared-emitting diode with λp = 940 nm.

2. Output may be shorted to either supply.

DD

A

PARAMETER

DARK OM

O

e

Dark voltage Ee = 0 3 10 3 10 3 10 mV Maximum output Ee = 2.6 mW/cm

Output voltage

Temperature coefficient of output voltage (VO)

Irradiance responsivity See Note 4 42 23 3.8 mV/(µW/cm2)

Supply current

4. Irradiance responsivity is characterized over the range VO = 0.05 to 3 V.

TEST

CONDITIONS

Ee = 48 µW/cm Ee = 87 µW/cm Ee = 525 µW/cm Ee = 48 µW/cm2,

TA = 0°C to 70°C Ee = 87 µW/cm2,

TA = 0°C to 70°C Ee = 525 µW/cm2,

TA = 0°C to 70°C

Ee = 48 µW/cm

No load

Ee = 87 µW/cm

No load

Ee = 525 µW/cm

No load

2 2

2,

2

2,

TSL260 TSL261 TSL262

MIN TYP MAX MIN TYP MAX MIN TYP MAX

3.1 3.5 3.1 3.5 3.1 3.5 V 1 2 3

900 1600

±1

1 2 3

±1

900 1600

MIN NOM MAX UNIT

3 5 9 V 0 70 °C

UNIT

V

1 2 3

mV/°C

±1

µA

900 1600

Operating Characteristics at TA = 25°C (see Figure 1)

t

r

t

f

VnOutput noise voltage VDD = 5 V, f = 20 Hz 0.6 0.5 0.4 µV/√Hz

Copyright  2000, TAOS Inc.

2

PARAMETER TEST CONDITIONS

Output pulse rise time VDD = 5 V, λp = 940 nm 360 90 7 µs Output pulse fall time VDD = 5 V, λp = 940 nm 360 90 7 µs



TSL260 TSL261 TSL262

MIN TYP MAX MIN TYP MAX MIN TYP MAX

www.taosinc.com



UNIT

Pulse

Generator

IRED

(see Note A)

IR LIGHTTOVOLTAGE OPTICAL SENSORS

PARAMETER MEASUREMENT INFORMATION

V

TSL26x

TEST CIRCUIT

DD

2

– +

3

1

R

Output

L

(see Note B)

Input

Output

E

e

TSL260, TSL261, TSL262

TAOS021 – MAY 2000

t

r

90%

10%

VOLTAGE WAVEFORM

90%

10%

t

f

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

PHOTODIODE SPECTRAL RESPONSE

1

TA = 25°C

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

10

1

– Output Voltage – V

0.1

O

V

VDD = 5 V

λp = 940 nm

No Load TA = 25°C

IRRADIANCE

TSL261

TSL260

TSL262

Relative Responsivity

0.01

0.1 1 10 100

www.taosinc.com

0.1 0

600 700 800 900

λ – Wavelength – nm

E

– Irradiance – µW/cm

e

2

1000

Figure 2 Figure 3



1000

Copyright  2000, TAOS Inc.

1100

3

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

TAOS021 – MAY 2000

TYPICAL CHARACTERISTICS

9

8

7

6

5

– Maximum Output Voltage – V

4

OM

V

3

2

HIGH-LEVEL OUTPUT VOLTAGE

vs

SUPPLY VOLTAGE

Ee = 2.6 mW/cm

λp = 940 nm

RL = 10 kΩ TA = 25°C

2

789

VDD – Supply Voltage – V

Figure 4 Figure 5

SUPPLY CURRENT

vs

OUTPUT VOLTAGE

0.8

0.6

0.4

– Supply Current – mA

DD

I

10456

VDD = 5 V

0.2 No Load

(RL = ∞) TA = 25°C

0

012 314

VO – Output Voltage – V

NORMALIZED OUTPUT VOLTAGE

ANGULAR DISPLACEMENT

1

0.8 TSL260

TSL261, 262

0.6

0.4

Normalized Output Voltage

0.2

0

80° 60° 40° 20° 0° 80°60°40°20°

θ – Angular Displacement

vs

Optical Axis

Figure 6

Copyright  2000, TAOS Inc.

4



www.taosinc.com

IR LIGHTTOVOLTAGE OPTICAL SENSORS

APPLICATION INFORMATION

V

DD

TSL260, TSL261, TSL262

TAOS021 – MAY 2000

2

TSL26x Sensor

NOTE A: Pullup resistor extends linear output range to near VDD with minimal (several millivolts typical) effect on V

at low VDD (3 V to 5 V).

3

1

Figure 7. Pullup for Increased V

5 V

TSL261 Sensor

2

3

1

15 kΩ

5 V

100 Ω

OP240

†

RP = 100 kΩ

5 V

50-kΩ Threshold

10 kΩ

Output

OM

2 3

LM393

– +

15 kΩ

4.7 kΩ

8

4

1

; particularly useful

DARK

Output

†

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

www.taosinc.com



Copyright  2000, TAOS Inc.



5

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

TAOS021 – MAY 2000

APPLICATION INFORMATION

5 V

†

BN301

27 kΩ

3 kΩ

0.01 µF

†

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.

7

6

2

4

TLC555

8

3

2N3906

1

18 Ω

5 V

TSL262 Sensor

2

3

0.01 µF

1

5 V

50 kΩ

2

–

3

+

TLC372

100 kΩ

15-kΩ Threshold

5 V

4.7 kΩ

8

1

4

Output

Figure 9. Pulsed Optical-Beam Interrupter

100 Ω

6 V

560 kΩ

0.1 µF

0.01 µF

3

5

6

27

1 µF0.1 µF

4

NE567

+

1 kΩ

8

270 kΩ

+

0.1 µF

4.7 µF

1

TSL260

Sensor

2

3

1

10 kΩ

†

OP295

or

‡

BN301

Light

Shield

2N3904

†

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.

6



www.taosinc.com

S1

TSL260, TSL261, TSL262

IR LIGHTTOVOLTAGE OPTICAL SENSORS

TAOS021 – MAY 2000

APPLICATION INFORMATION

Freq

Trim

9 V

6 V

IN

U4 TSL260 Sensor

OUT

COM

1

7.5 kΩ

4.7 kΩ

0.1 µF

2

R5

+

R6

C2

R1

680 Ω

7

6 2

C1 1 µF

3

C5

0.1 µF

3

5

6

2

+ +

C3 1 µF

84

U1

TLC555

6 V

4

U2

NE567

7

C4

4.7 µF

1

8

1

R3

22 Ω

3

R2

1 kΩ

5

TRANSMITTER

R7

4.7 kΩ

6 V

4

1

16

2

1

6 V

R8 300 Ω

1

2

PRE VCCCLR

J

1/2 SN74HC76

CLK

K

U3

TIL3010

52

U5

GND

13

3

Q1 2N3904

6

4

3

Q

AC Load

R4

180 Ω

15

J1

1

R9

1 kΩ

D1

†

BN301

To Sensor

2

1

2

3

120 V 60 Hz

Q2 TIC225C

3

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

www.taosinc.com



7

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

TAOS021 – MAY 2000

APPLICATION INFORMATION

Audio

Input

9 V

IN

U1

TSL261

Sensor

OUT

COM

1

9 V

+

1 µF

2

6 V

IN

U2

TLE2426

OUT

COM

C1

3

10 kΩ

R2

6 V

U1

TLC271

7

3

2

R1

10 kΩ

+

C3 1 µF

VOL

4

TRANSMITTER

5

+ _

8

R2

20 kΩ

100 pF

6

1

C1

Q1 2N3904

R3 40 Ω

D1 OP295

D2 OP295

†

IN

U2

TLE2426

OUT

COM

†

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.

9 V

2

3

_

+

7

4

NE5534

RECEIVER

6

U3A

R1

100 kΩ

+

C2

47 µF

Output (to headphones)

Figure 12. IR Voice-Band Audio Link

8



www.taosinc.com

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.

4,2 (0.165) 3,8 (0.150)

0,86 (0.034) 0,46 (0.018)

2,125 (0.084) 1,875 (0.074)

0,635 (0.025)

0,4 (0.016)

0,51 (0.02)

0,385 (0.015)

0,75 (0.030) 0,65 (0.026)

1

2

3

0,65 (0.026) 0,55 (0.022)

15,7 (0.619) 13,2 (0.520)

4,8 (0.189) 4,4 (0.173)

0,75 (0.030) R

5,05 (0.199) 4,55 (0.179)

ALL LINEAR DIMENSIONS ARE IN MILLIMETERS AND PARENTHETICALLY IN INCHES

2,25 (0.089) 1,75 (0.069)

1,25 (0.049) 0,75 (0.029)

0,85 (0.033) 0,35 (0.014)

2,05 (0.081) 1,55 (0.061)

3,05 (0.120) 2,55 (0.100)

1,75 (0.069) 1,25 (0.049)

2,74 (0.108) 2,34 (0.092)

PIN 1 GND PIN 2 V PIN 3 OUT

1

2

DD

3

4,85 (0.191) 4,35 (0.171)

4,35 (0.171) 3,85 (0.152)

www.taosinc.com



9

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 RESUL T I N PERSONAL INJURY OR DEATH. USE OF T AOS PRODUCTS IN LIFE SUPPOR T 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.

10



www.taosinc.com