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TSL257T Light-to-Voltage

High sensitivity low profile package


The TSL257T 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 TSL257T has a transimpedance gain of 320 MΩ. The device has improved offset voltage stability and low power consumption and is supplied in a compact 4-lead surface-mount package.

Key Features

  • Single photo-diode and trans impedance architecture
  • 160µs output rise-time response▪ High Irradiance Responsivity 680mV/(µW/cm2) @ λp = 640nm
  • Rail-to-rail output swing
  • 2.6mm x 3.8mm 4-lead SMD (T) package

Key Benefits

  • 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 
  • Provides full dynamic range
  • Reduces board space requirements while simplifying designs 

Product Facts

Operating Voltage [V] 2,7-5,5
Responsivity [uW/cm²] Ultra: >400
Responsivity Wavelength [nm] 640
Fast Response Time
Low Noise
Visible Light Cutoff Filter and Lens
Temperature Range [°C] -25 to 85
Packages T-8

Additional Information

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