Light-to-Frequency (LTF) sensors convert measurements of light intensity to a digital form for direct interfacing to a microcontroller. The output of the device is a square wave or pulse stream the frequency of which is linearly proportional to the light intensity. LTF converters are designed for applications such as ambient light measurement, light absorption/reflection in products such as white goods, photographic equipment, colorimetry, chemical analyzers and display contrast controls. They may be used in any system that requires a wide dynamic range, and/or high resolution digital measurement of light intensity.
Max. Output Frequency
|Selectable Sensitivity and Full-Scale Output Frequency||
Output Frequency Tolerances
|TSL238T||High-sensitivity converter low profile 4-pin package||2.7-5.5||3400 @ 640||1||20||-40 to 85||T||Not recommended for new design. Please see Ambient Light Sensors device family.||TSL238T|
|TSL237T||High-sensitivity converter low profile 4-lead package||2.7-5.5||1200 @ 640||1||20||-40 to 85||T||Not recommended for new design. Please see Ambient Light Sensors device family.||TSL237T|
|TSL237||Sidelooker package||2.7-5.5||1200 @ 640||1||20||-40 to 85||S, SM||Not recommended for new design. Please see Ambient Light Sensors device family.||TSL237|
|TSL235R||Converter sidelooker package||2.7-5.5||625 @ 635||0.5||20||-25 to 70||S||Not recommended for new design. Please see Ambient Light Sensors device family.||TSL235R|