TAOS TSLR257, TSLG257, TSLB257 Datasheet



TSLB257, TSLG257, TSLR257

HIGHSENSITIVITY COLOR



LIGHTTOVOLTAGE CONVERTERS

TAOS027B – MARCH 2002

 Converts Light Intensity to Output Voltage
 Integral Color Filter in Blue, Green, or Red

PACKAGE

(FRONT VIEW)

 Monolithic Silicon IC Containing

Photodiode, Operational Amplifier, and
Feedback Components

321

 High Sensitivity
 Single Voltage Supply Operation
 Low Noise (200 µVrms Typ to 1 kHz)
 Rail-to-Rail Output
 High Power-Supply Rejection (35 dB at

1 kHz)

 Compact 3-Leaded Plastic Package

GND

Description

The TSLB257, TSLG257, and TSLR257 are high-sensitivity low-noise light-to-voltage optical converters that
incorporate onboard blue, green, and red optical filters, respectively. These devices combine a photodiode and
a transimpedance amplifier on a single monolithic CMOS integrated circuit with a color filter over the photodiode.
Output voltage is directly proportional to light intensity (irradiance) on the photodiode. Each device has a
transimpedance gain of 320 MΩ with improved offset voltage stability and low power consumption, and is
supplied in a 3-lead clear plastic sidelooker package with an integral lens.

DD

OUTV

These devices are ideal for applications such as colorimetry, printing process control, display color correction,
and selectively ambient light detection or rejection.

Functional Block Diagram

–
+

Voltage
Output

Terminal Functions

TERMINAL

NAME NO.

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

DD

2 Supply voltage

DESCRIPTION

The

LUMENOLOGY

 Company

Texas Advanced Optoelectronic Solutions Inc.



800 Jupiter Road, Suite 205  Plano, TX 75074  [phone]

www.taosinc.com



Copyright  2002, TAOS Inc.

1

TSLB257, TSLG257, TSLR257
HIGHSENSITIVITY COLOR
LIGHTTOVOLTAGE CONVERTERS

TAOS027B – MARCH 2002

Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage, VDD (see Note 1) 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output current, IO ±10 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Duration of short-circuit current at (or below) 25°C 5 s. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range, TA –25°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

–25°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stg

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 240°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltages are with respect to GND.

Recommended Operating Conditions

MIN MAX UNIT

Supply voltage, V
Operating free-air temperature, T

DD

A

2.7 5.5 V
0 70 °C

†

Copyright  2002, TAOS Inc.

2



www.taosinc.com

The

LUMENOLOGY



 Company

TSLB257, TSLG257, TSLR257

Maximum out ut voltage

yj

HIGHSENSITIVITY COLOR

LIGHTTOVOLTAGE CONVERTERS

TAOS027B – MARCH 2002

Electrical Characteristics at VDD = 5 V, TA = 25°C, RL = 10 kΩ (unless otherwise noted) (see Notes
2 and 3)

PARAMETER TEST CONDITIONS

V

V

V

α

R

R

PSRR Power supply rejection

I

Dark voltage Ee = 0 0 15 0 15 0 15 mV

D

Maximum output voltage

OM

swing

Output voltage

O

Temperature coefficient

VD

of dark voltage (VD)

Irradiance responsivity

e

Illuminance responsivity

V

ratio
Supply current VO = 2 V (typical) 1.9 3.5 1.9 3.5 1.9 3.5 mA

DD

VDD = 4.5 V, No Load 4.49 4.49 4.49
VDD = 4.5 V, RL = 10 kΩ 4 4.2 4 4.2 4 4.2
Ee = 1.7 µW/cm2,

λp = 470 nm, Note 4
Ee = 1.6 µW/cm2,

λp = 524 nm, Note 5
Ee = 1.1 µW/cm2,

λp = 635 nm, Note 6
TA = 0°C to 70°C –15 –15 –15 µV/°C
λp = 470 nm,

see Notes 4 and 7

λp = 524 nm,

see Notes 5 and 7

λp =565 nm,

see Notes 7 and 8

λp = 635 nm,

see Notes 6 and 7

λp = 470 nm,

see Notes 4 and 7

λp = 524 nm,

see Notes 5 and 7

λp = 565 nm,

see Notes 7 and 8

λp = 635 nm,

see Notes 6 and 7
fac = 100 Hz, see Note 10 55 55 55
fac = 1 kHz, see Note 10 35 35 35

TSLB257 TSLG257 TSLR257

MIN TYP MAX MIN TYP MAX MIN TYP MAX

1.3 2 2.7

1.3 2 2.7

1.3 2 2.7

1.18 0.35 0.09

0.53 1.25 0.14

0.09 1.17 0.36

0.05 0.14 1.82

1.57 0.47 0.12

0.10 0.24 0.027

0.015 0.20 0.06

0.033 0.093 1.21

UNIT

V

V

V/
(µW/
cm2)

V/Ix

dB

NOTES: 2. Measured with RL = 10 kΩ between output and ground.

The

LUMENOLOGY

3. Optical measurements are made using small-angle incident radiation from a light-emitting diode (LED) optical source.

4. The input irradiance is supplied by an InGaN light-emitting diode with the following characteristics: peak wavelength λp = 470 nm,
spectral halfwidth ∆λ½ = 35 nm, luminous efficacy = 75 lm/W.

5. The input irradiance is supplied by an InGaN light-emitting diode with the following characteristics: peak wavelength λp = 524 nm,
spectral halfwidth ∆λ½ = 47 nm, luminous efficacy = 520 lm/W.

6. The input irradiance is supplied by an AlInGaP light-emitting diode with the following characteristics: peak wavelength λp = 635 nm,
spectral halfwidth ∆λ½ = 17 nm, luminous efficacy = 150 lm/W.

7. Responsivity is characterized over the range VO = 0.1 V to 4.5 V. The best-fit straight line of Output Voltage VO versus Irradiance
Ee over this range will typically have a positive extrapolated VO value for Ee = 0.

8. The input irradiance is supplied by a GaP light-emitting diode with the following characteristics: peak wavelength λp = 565 nm,
spectral halfwidth ∆λ½ = 28 nm, luminous efficacy = 595 lm/W.

9. Illuminance responsivity RV is calculated from the irradiance responsivity by using the LED luminous efficacy values stated in Notes
4, 5, 6, and 8, and using 1 lx = 1 lm/m2.

10. Power supply rejection ratio PSRR is defined as 20 log (∆VDD(f)/∆VO(f)) with VDD(f = 0) = 5 V and VO(f = 0) = 2 V.

 Company





www.taosinc.com

Copyright  2002, TAOS Inc.

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