TCS3200 Colour recognition sensor

TCS3200 is a programmable colour to frequency converter The output signal of TCS3200 is digital and can drive standard TTL or CMOS logic inputs, so it can be directly connected to microprocessors or other logic circuits. As the output is digital and can achieve conversion accuracy of more than 10 bits per colour channel, there is no need for A/D conversion circuits

TCS3200 adopts an 8-pin SOIC surface mount package, which integrates 64 photodiodes on a single chip. These diodes are divided into four types, with 16 photodiodes equipped with red filters; 16 photodiodes with green filters; 16 photodiodes are equipped with blue filters, while the remaining 16 do not have any filters.

During operation, the required filter is dynamically selected through two programmable pins. The typical output frequency range of this sensor is from 2Hz to 500kHz. Users can also choose 100%, 20%, or 2% output scaling factor, or power off mode through two programmable pins. The output scaling factor enables the sensor's output to adapt to different measurement ranges, improving its adaptability. For example, when using a low-speed frequency counter, a small calibration value can be selected to match the output frequency of TCS3200 with the counter. When the incident light is projected onto TCS3200, different filters can be selected by controlling the different combinations of pins S2 and S3 through photodiodes; After passing through the current to frequency converter, output square waves of different frequencies (with a duty cycle of 50%), corresponding to different colors and light intensities; It is also possible to control pin S0 through output calibration S1， Select different output scaling factors and adjust the output frequency range to meet different requirements.