ams Datasheet Page 1
[v1-00] 2016-Jun-07 Document Feedback
TSL250RD, TSL251RD,
TSL260RD, TSL261RD
Light-to-Voltage Optical Sensors
The TSL250RD, TSL251RD, TSL260RD, and TSL261RD are
light-to-voltage optical sensors, each combining a photodiode
and a transimpedance amplifier on a single monolithic IC. The
TSL250RD and TSL260RD have an equivalent feedback
resistance of 16 MΩ and a photodiode measuring 1 square mm.
The TSL251RD and TSL261RD have an equivalent feedback
resistance of 8 MΩ and a photodiode measuring 0.5 square mm.
Output voltage is directly proportional to the light intensity
(irradiance) on the photodiode. These devices have improved
amplifier offset-voltage stability and low power consumption.
Ordering Information and Content Guide appear at end of
datasheet.
Key Benefits & Features
The benefits and features of TSL250RD, TSL251RD, TSL260RD,
and TSL261RD Light-to-Voltage Optical Sensors, are listed
below:
Figure 1:
Added Value of Using TSL250RD / TSL251RD / TSL260RD / TSL261RD
• Monolithic Silicon IC Containing Photodiode, Operational
Amplifier, and Feedback Components
• Converts Light Intensity to a Voltage
• Single Voltage Supply Operation
• Low Dark (Offset) Voltage (10mV Max)
• Low Supply Current (1.1mA Typical)
Benefits Features
• Enables Extremely Fast Response to
Change
• Single Photo-Diode and Transimpedance Architecture
• Enables Fast Response to Visible Light in
Range of 400nm to 700nm Wavelengths
• Output Rise-Time Response, Typically
• 260µs (TSL250RD, TSL260RD)
• 70µs (TSL251RD, TSL261RD)
• Provides for High Sensitivity to Detect
a
S
mall Change in Light
• High Irradiance Responsivity, Typically
•64mV/(µW/cm
2
) @ λp = 640nm (TSL250RD)
•58mV/(µW/cm
2
) @ λp = 940nm (TSL260RD)
• Reduces Board Space Requirements
while Simplifying Design
s
• 5mm x 6.
2mm SOIC (D) Package
General Description
Page 2 ams Datasheet
Document Feedback [v1-00] 2016-Jun-07
TSL2 50RD, TSL25 1RD, TSL 260RD, TSL2 61RD − General Description
• Wide Supply-Voltage Range (2.7V to 5.5V)
• Low-Profile Surface-Mount Package:
• Clear Plastic for TSL250RD and TSL251RD
• Visible Light-Cutoff Filter Plastic for TSL260
RD and
TSL2
61RD
• Lead (Pb) Free and RoHS Compliant Package
Functional Block Diagram
The functional blocks of this device are shown below:
Figure 2:
TSL250RD, TSL251RD, TSL260RD, and TSL261RD
Voltage
Output
+
ï