TSL254R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS071C SEPTEMBER 2007
1
The LUMENOLOGY r Company
r
r
Copyright E 2007, TAOS Inc.
www.taosinc.com
D Monolithic Silicon IC Containing
Photodiode, Operational Amplifier, and
Feedback Components
D Converts Light Intensity to a Voltage
D Irradiance Responsivity, Typically
9 mV/(mW/cm
2
) at l
p
= 635 nm
D Compact 3-Lead Clear Plastic Package
D Single Voltage Supply Operation
D Low Dark (Offset) Voltage....10 mV Max
D Low Supply Current......1.1 mA Typical
D Wide Supply-Voltage Range.... 2.7 V to 5.5 V
D Replacement for TSL254
D RoHS Compliant (LF Package Only)
Description
The TSL254R is a light-to-voltage optical sensor combining a photodiode and a transimpedance amplifier
(feedback resistor = 1 M? on a single monolithic IC. Output voltage is directly proportional to the light intensity
(irradiance) on the photodiode. The device has improved amplifier offset-voltage stability and low power
consumption and is supplied in a 3-lead clear plastic sidelooker package with an integral lens. When supplied
in the lead (Pb) free package, the device is RoHS compliant.
Functional Block Diagram
Voltage
Output
+
Available Options
DEVICE
T
A
PACKAGE LEADS
PACKAGE DESIGNATOR
ORDERING NUMBER
TSL254R
0癈 to 70癈
3-lead Sidelooker
S
TSL254R
TSL254R
0癈 to 70癈
3-lead Sidelooker Lead (Pb) Free
S
TSL254RLF
TSL254R
0癈 to 70癈
3-lead Surface-Mount Sidelooker Lead (Pb) Free
SM
TSL254RSMLF
Terminal Functions
TERMINAL
NAME
NO.
DESCRIPTION
GND
1
Ground (substrate). All voltages are referenced to GND.
OUT
3
Output voltage
V
DD
2
Supply voltage
r
r
Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972) 673-0759
PACKAGE S
SIDELOOKER
(FRONT VIEW)
1
GND
2
V
DD
3
OUT
PACKAGE SM
SURFACE MOUNT
SIDELOOKER
(FRONT VIEW)
1
GND
2
V
DD
3
OUT
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