TSL245R Datasheet, PDF (1/10 Pages) TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS – INFRARED LIGHT-TO-FREQUENCY CONVERTER

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TSL245R
INFRARED LIGHT-TO-FREQUENCY CONVERTER
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TAOS060D − SEPTEMBER 2007
D High-Resolution Conversion of Light
Intensity to Frequency With No External
Components
D Communicates Directly With a
Microcontroller
D Compact Three-Leaded Plastic Package
D Integral Visible-Light Cutoff Filter
D Single-Supply Operation . . . 2.7 V to 5.5 V
D High Irradiance Responsivity . . . Typically
500 Hz/(μW/cm²) at 940 nm
D Nonlinearity Error Typically 0.2% at 100 kHz
D Available in Through-Hole and Surface
Mount Three-Lead Sidelooker Packages
D Replacement for TSL245
D Lead (Pb) Free Package Option Available
PACKAGE S
SIDELOOKER
(FRONT VIEW)
PACKAGE SM
SURFACE MOUNT
SIDELOOKER
(FRONT VIEW)
123
GND V_DD OUT
123
GND V_DD OUT
Description
The TSL245R light-to-frequency converter combines a silicon photodiode and a current-to-frequency converter
on a single monolithic CMOS integrated circuit. Output is a square wave (50% duty cycle) with frequency directly
proportional to light intensity (irradiance) on the photodiode. The digital output allows direct interface to a
microcontroller or other logic circuitry. The TSL245R is characterized for operation over the temperature range
of −25°C to 70°C and is supplied in a 3-lead plastic side-looker package with an integral visible-light cutoff filter
and lens. When supplied in the lead (Pb) free package, the devices are RoHS compliant.
Functional Block Diagram
Light
Photodiode
Current-to-Frequency
Converter
Output
Available Options
DEVICE
TSL245R
TSL245R
TSL245R
TSL245R
T_A
−25°C to 70°
−25°C to 70°
−25°C to 70°
−25°C to 70°
PACKAGE − LEADS
3-lead Sidelooker
3-lead Sidelooker — Lead (Pb) Free
3-lead Surface Mount Sidelooker
3-lead Surface Mount Side-Looker — Lead (Pb)
Free
PACKAGE DESIGNATOR
S
S
SM
SM
ORDERING NUMBER
TSL245R
TSL245R−LF
TSL245RSM
TSL245RSM−LF
The LUMENOLOGY r Company
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Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972_r) 673-0759
www.taosinc.com
Copyright E 2007, TAOS Inc.
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