TSL220

Supply voltage, V_CC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . 12 V
Operating free-air temperature, T_A  . . . . . . . . . . . . . . . . . . . . . . . . .  . .25°C to 70°C
Storage temperature range  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . 25°C to 85°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds  . . . . . . . . . . . 260°C

The TSL220 consists of a large-area photodiode and a current-to-frequency converter. The output voltage is a pulse train and its frequency is directly proportional to the light intensity (irradiance) on the photodiode. The output is CMOS^† compatible and its frequency may be measured using pulse counting, period timing, or integration techniques. The TSL220 is ideal for light-sensing applications requiring wide dynamic range, high sensitivity, and high noise immunity. The output frequency range is determined by an external capacitor; hence, the desired output frequency is adjustable for a given light intensity at the input. The TSL220 is characterized for operation over the temperature range of 25°C to 70°C.