Description
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.

● Monolithic Silicon IC Containing Photodiode, Operational Amplifier, and Feedback Components
● Converts Light Intensity to a Voltage
● High Irradiance Responsivity, Typically
   − 64 mV/(μW/cm2) at λp = 640 nm (TSL250RD)
   − 58 mV/(μW/cm2) at λp = 940 nm (TSL260RD)
● Single Voltage Supply Operation
● Low Dark (Offset) Voltage . . . 10 mV Max
● Low Supply Current . . . 1.1 mA Typical
● Wide Supply-Voltage Range . . . 2.7 V to 5.5 V
● Low-Profile Surface-Mount Package:
   − Clear Plastic for TSL250RD and TSL251RD
   − Visible Light-Cutoff Filter Plastic for TSL260RD and TSL261RD
● Lead (Pb) Free and RoHS Compliant Package