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TSL261RD Light-to-Voltage

DIP package


  • Single photodiode and transimpedance architecture
  • 70µs output rise time response
  • High irradiance responsivity 15mV/(µW/cm2) @ λp = 940nm
  • 5mm x 6.2mm SOIC (D) package


  • Enables extremely fast response to change
  • Enables fast response to visible light in range of 400nm to 700nm wavelengths
  • Provides for high sensitivity to detect a small change in light
  • Reduces board space requirements while simplifying designs

Product parameters

Operating Voltage [V] 2.7-5.5
Responsivity [µW/cm²] High: 151-400
Responsivity Wavelength [nm] 640
Fast Response Time
Low Noise Yes
Visible Light Cutoff Filter and Lens
Temperature Range [°C] -25 to 85
Packages SOIC = 8

General 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.

This product suits for the following applications:

  • Sport and fitness
  • Lifestyle
  • Gaming

Technical Documents

Name Type Description Version Language
TSL261RD_BD000192_1-00.png Block Diagram TSL261RD Block Diagram 1-00 English
TSL250R_1R_2R_260R_1R_1RD_PD000448_1-00.pdf Other Product Document EOL Notification TSL250R, TSL251R, TSL252R, TSL260R, TSL261R, TSL261RD, TSL257SM (issued 2018-Apr) 1-00 English