The TCS34725FN is a color light-to-digital converter from AMS (ams-OSRAM) with integrated IR blocking filter, providing RGB+Clear four-channel 16-bit resolution output via I2C interface, in an FN-6 package, suitable for color recognition and color temperature measurement.<\/p>\n
TCS34725FN Overview The TCS34725FN is a color light-to-digital converter from AMS (ams-OSRAM) with integrated IR blocking filter, providing RGB+Clear four-channel 16-bit resolution output via I2C interface, in an FN-6 package, suitable for color recognition and color temperature measurement. Key Features Four channels: RGB + Clear I2C interface (up to 400kHz) 16-bit resolution Built-in IR blocking […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,42],"tags":[],"chip_brand":[208],"class_list":["post-8030","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-sensors","chip_brand-ams"],"acf":{"brief_explanation":"RGB color sensor with IR filter, I2C, FN-6","date_code":"","package_case":"FN-6 (3.2 x 2.7 x 1.0 mm)","in_stock":10463,"datasheet":"https:\/\/ams.com\/documents\/20143\/36005\/TCS3472_DS000390_3-00.pdf","price":"$3.80 @ 1ku","product_introduction":"The TCS34725FN is a digital RGBC color sensor from ams-OSRAM in a 6-lead FN (2.0 x 2.4 x 0.65 mm) package, featuring an integrated IR-blocking filter for accurate color measurement. It provides 16-bit per channel digital output for red, green, blue, and clear channels using four simultaneous integrating ADCs. With programmable analog gain (1x, 4x, 16x, 60x), programmable integration time from 2.4 ms to 614 ms, and a 3,800,000:1 dynamic range, it operates under diverse lighting conditions. The I2C interface runs at up to 400 kHz, and a programmable interrupt with threshold and persistence filter enables event-driven color monitoring. Supply current is 235 uA active and 2.5 uA in sleep mode at 3.0 V.","working_principle":"The TCS34725FN integrates a 3 x 4 photodiode array on a single CMOS die, where each photodiode is coated with a specific color filter (red, green, blue, or clear\/no filter) and an IR-blocking filter layer that minimizes the infrared spectral component of incoming light. Four independent 16-bit integrating ADCs simultaneously convert the photocurrent from each photodiode channel into digital values. The integration time is programmable in 2.4 ms steps from 2.4 ms to 614 ms, effectively controlling the ADC resolution and sensitivity. Longer integration times provide higher effective resolution for low-light conditions. The programmable analog gain (AGAIN) amplifies the photodiode signals before conversion, with 60x gain enabling detection of extremely low light levels. The I2C interface allows the host MCU to read the 16-bit R, G, B, and Clear channel data registers. A double-buffered data register prevents invalid reads during conversion. The interrupt output can be configured to assert when the Clear channel crosses programmable upper or lower thresholds for a programmable number of consecutive integration cycles (persistence filter), reducing host polling overhead.","pin_description":"
| Pin<\/th> | Name<\/th> | Description<\/th><\/tr> | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1<\/td> | VDD<\/td> | Power supply (2.7 V to 3.6 V)<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 2<\/td> | SCL<\/td> | I2C clock input; requires external pull-up resistor<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 3<\/td> | GND<\/td> | Ground reference<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 4<\/td> | NC<\/td> | No connect; leave floating<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 5<\/td> | INT<\/td> | Interrupt output; active-low, open-drain, programmable threshold with persistence<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 6<\/td> | SDA<\/td> | I2C serial data; open-drain, requires external pull-up resistor<\/td><\/tr><\/table>\n TCS34725FN uses the FN-6 (Dual Flat No-Lead, 2.0x2.4x0.65mm) package from ams-OSRAM with Pin 1 = VDD, Pin 2 = SCL, Pin 3 = GND, Pin 4 = NC, Pin 5 = INT (interrupt, open-drain), Pin 6 = SDA. Pin 1 is identified by a dot or chamfer on the package corner. The exposed thermal pad on the package bottom is electrically connected to GND and must be soldered to the PCB ground plane. The I2C address is fixed at 0x29 (7-bit) and cannot be changed \u2014 only one TCS34725 can exist on a bus without an I2C multiplexer. SCL and SDA require external pull-up resistors (4.7k\u03a9 typical). The INT pin is open-drain and also requires a pull-up resistor. The NC pin should be left floating.<\/p>","application_scenarios":"
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