TCS3200EVM ams

TCS3200 Programmable Color Light-to-Frequency Converter The TCS3200 programmable color light-to-frequency converter General Description combines configurable silicon photodiodes and a current-to-frequency converter on a single monolithic CMOS integrated circuit. The output is a square wave (50% duty cycle) with frequency directly proportional to light intensity (irradiance). The full-scale output frequency can be scaled by one of three preset values via two control input pins. Digital inputs and digital output allow direct interface to a microcontroller or other logic circuitry. Output enable (OE) places the output in the high-impedance state for multiple-unit sharing of a microcontroller input line. In the TCS3200, the light-to-frequency converter reads an 8 8 array of photodiodes. Sixteen photodiodes have blue filters, 16 photodiodes have green filters, 16 photodiodes have red filters, and 16 photodiodes are clear with no filters. The four types (colors) of photodiodes are interdigitated to minimize the effect of non-uniformity of incident irradiance. All photodiodes of the same color are connected in parallel. Pins S2 and S3 are used to select which group of photodiodes (red, green, blue, clear) are active. Photodiodes are 110m 110m in size and are on 134m centers. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of TCS3200 Programmable Color Light-to-Frequency Converter are listed below: Figure 1: Added Value of Using TCS3200 Benefits Features Enables High-Resolution Conversion of Light Programmable Color Light-to-Frequency Converter Intensity to Frequency Disables the Output into a Hi-Impedance State Output Enable (OE) Pin when OE Input Pin is Low Enables Output Range to be Optimized for a Output Frequency Scaling Variety of Low-Cost Measurement Techniques Reduces Board Space Requirements while Available in 5mm x 6.2mm SOIC (D) Package Simplifying Designs ams Datasheet Page 1 v1-01 2018-Mar-14 Document FeedbackT C S3 200 Gen e ra l De s c rip t ion Programmable Color and Full-Scale Output Frequency Communicates Directly with a Microcontroller Single-Supply Operation (2.7V to 5.5V) Power Down Feature Nonlinearity Error Typically 0.2% at 50kHz Stable 200ppm/C Temperature Coefficient Low-Profile Lead (Pb) Free and RoHS Compliant Surface-Mount Package Block Diagram The functional blocks of this device are shown below: Figure 2: TCS3200 Block Diagram Output Current-to-Frequency Photodiode Light Converter Array S2 S3 S0 S1 OE Page 2 ams Datasheet Document Feedback v1-01 2018-Mar-14