TCS3200, TCS3210 PROGRAMMABLE COLOR LIGHT-TO-FREQUENCY CONVERTER TAOS099 JULY 2009 PACKAGE D High-Resolution Conversion of Light 8-LEAD SOIC Intensity to Frequency (TOP VIEW) Programmable Color and Full-Scale Output Frequency S0 1 8 S3 Communicates Directly With a Microcontroller S1 2 7 S2 Single-Supply Operation (2.7 V to 5.5 V) Power Down Feature OE 3 6 OUT Nonlinearity Error Typically 0.2% at 50 kHz GND 4 5 V DD Stable 200 ppm/C Temperature Coefficient TCS3200 Low-Profile Lead (Pb) Free and RoHS Compliant Surface-Mount Package S0 1 8 S3 Description S1 2 7 S2 The TCS3200 and TCS3210 programmable color OE 3 6 OUT light-to-frequency converters that combine confi- gurable silicon photodiodes and a current-to-fre- GND 4 5 V DD quency converter on a single monolithic CMOS TCS3210 integrated circuit. The output is a square wave (50% duty cycle) with frequency directly propor- tional 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 x 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. In the TCS3210, the light-to-frequency converter reads a 4 x 6 array of photodiodes. Six photodiodes have blue filters, 6 photodiodes have green filters, 6 photodiodes have red filters, and 6 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 110 m x 110 m in size and are on 134-m centers. Functional Block Diagram Output Current-to-Frequency Photodiode Light Converter Array S2 S3 S0 S1 OE The LUMENOLOGY Company Copyright 2009, TAOS Inc. Texas Advanced Optoelectronic Solutions Inc. 1001 Klein Road Suite 300 Plano, TX 75074 (972) 673-0759 www.taosinc.com 1TCS3200, TCS3210 PROGRAMMABLE COLOR LIGHT-TO-FREQUENCY CONVERTER TAOS099 JULY 2009 Terminal Functions TERMINAL I/OI/O DESCRIPTIONDESCRIPTION NAME NO. GND 4 Power supply ground. All voltages are referenced to GND. OE 3 I Enable for f (active low). o OUT 6 O Output frequency (f ). o S0, S1 1, 2 I Output frequency scaling selection inputs. S2, S3 7, 8 I Photodiode type selection inputs. V 5 Supply voltage DD Table 1. Selectable Options S0 S1 OUTPUT FREQUENCY SCALING (f ) S2 S3 PHOTODIODE TYPE o L L Power down L L Red L H 2% L H Blue H L 20% H L Clear (no filter) H H 100% H H Green Available Options DEVICE T PACKAGE LEADS PACKAGE DESIGNATOR ORDERING NUMBER A TCS3200 40C to 85C SOIC8 D TCS3200D TCS3210 40C to 85C SOIC8 D TCS3210D Copyright 2009, TAOS Inc. The LUMENOLOGY Company 2 www.taosinc.com