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TSLB257, TSLG257, TSLR257
HIGH SENSITIVITY COLOR
LIGHT TO VOLTAGE CONVERTERS
TAOS027B 鈥?MARCH 2002
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Converts Light Intensity to Output Voltage
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Integral Color Filter in Blue, Green, or Red
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Monolithic Silicon IC Containing
Photodiode, Operational Amplifier, and
Feedback Components
PACKAGE
(FRONT VIEW)
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D
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1
2
3
High Sensitivity
Single Voltage Supply Operation
Low Noise (200
碌Vrms
Typ to 1 kHz)
Rail-to-Rail Output
High Power-Supply Rejection (35 dB at
1 kHz)
Compact 3-Leaded Plastic Package
GND V
DD
OUT
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 M鈩?with improved offset voltage stability and low power consumption, and is
supplied in a 3-lead clear plastic sidelooker package with an integral lens.
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
鈥?/div>
+
Voltage
Output
Terminal Functions
TERMINAL
NAME
GND
OUT
V
DD
NO.
1
3
2
Output voltage
Supply voltage
DESCRIPTION
Ground (substrate). All voltages are referenced to GND.
The
LUMENOLOGY
r
Company
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Copyright
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2002, TAOS Inc.
Texas Advanced Optoelectronic Solutions Inc.
800 Jupiter Road, Suite 205
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Plano, TX 75074
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(972) 673-0759
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www.taosinc.com
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