TSL257 Datasheet, PDF (1/6 Pages) List of Unclassifed Manufacturers – HIGHSENSITIVITY LIGHTTOVOLTAGE CONVERTER

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D Converts Light Intensity to Output Voltage
D Monolithic Silicon IC Containing
Photodiode, Operational Amplifier, and
Feedback Components
D High Sensitivity
D Single Voltage Supply Operation (2.7 V to
5.5 V)
D Low Noise (200 µVrms Typ to 1 kHz)
D Rail-to-Rail Output
D High Power-Supply Rejection (35 dB at
1 kHz)
D Compact 3-Leaded Plastic Package
TSL257
HIGHĆSENSITIVITY
LIGHTĆTOĆVOLTAGE CONVERTER
TAOS023A – JULY 2000
PACKAGE
(FRONT VIEW)
123
GND V_DD OUT
Description
The TSL257 is a high-sensitivity low-noise light-to-voltage optical converter that combines a photodiode and
a transimpedance amplifier on a single monolithic CMOS integrated circuit. Output voltage is directly
proportional to light intensity (irradiance) on the photodiode. The TSL257 has a transimpedance gain of 320 MΩ.
The device has improved offset voltage stability and low power consumption and is supplied in a 3-lead clear
plastic sidelooker package with an integral lens.
Functional Block Diagram
–
Voltage
+
Output
Terminal Functions
TERMINAL
NAME NO.
GND
1
OUT
3
V_DD
2
DESCRIPTION
Ground (substrate). All voltages are referenced to GND.
Output voltage
Supply voltage
www.taosinc.com
Texas Advan^t ced Optoelectronic Solutions Inc.
800 Jupiter Road, Suite 205 S Plano, TX 75074 S [phone]
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Copyright E 2001, TAOS Inc.
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