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TSL257 Datasheet

  • TSL257

  • HIGHSENSITIVITY LIGHTTOVOLTAGE CONVERTER

  • 6頁

  • ETC

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t
t
TSL257
HIGH SENSITIVITY
LIGHT TO VOLTAGE CONVERTER
TAOS023A 鈥?JULY 2000
D
Converts Light Intensity to Output Voltage
D
Monolithic Silicon IC Containing
D
D
D
D
D
D
Photodiode, Operational Amplifier, and
Feedback Components
High Sensitivity
Single Voltage Supply Operation (2.7 V to
5.5 V)
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
PACKAGE
(FRONT VIEW)
1
2
3
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 M鈩?
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
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.
www.taosinc.com
Texas Advanced Optoelectronic Solutions Inc.
800 Jupiter Road, Suite 205
S
Plano, TX 75074
S
(972) 673-0759
t
t
Copyright
E
2001, TAOS Inc.
1

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