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AS7221 CCT Tuning Smart Lighting Manager

Tunable white lighting, simplified!


  • Intelligent controller with integrated XYZ tristimulus sensor
  • Selectable drive modes, including PWM-switched current steering or PWM-based duty cycle management
  • Built-in 0-10V analog or PWM digital dimming outputs generator for precise 1% dimming
  • 20-pin LGA 4.5mm x 4.7mm x 2.5mm, -40°C to 85°C


  • Lowers overall manufactured costs and adds precision to tunable white luminaires and lamps
  • Enables cost-optimized single channel drivers to deliver a precise tunable white result
  • Supports legacy IO approaches, as well as digital deep dimming
  • Compact lighting-capable package with no added optics required

Product parameters

Sensor Type True color XYZ (CIE)
Applications CCT tunable luminaires and IoT smart lights
UART Serial
Reference Networking BLE, serial
Smart Ltg Command Set Yes
Lux/CCT Control CCT/Lux command set
I²C Master to support TSL45315 ALS
Package LGA (5x5x2.5)

General description

Simplify tunable white lighting systems with the AS7221 sensor-integrated IoT smart lighting manager. The AS7221 will lower the manufactured cost of your tunable white lighting system. Closed loop calibrated tri-stimulus color sensing for direct CIE color point mapping and control enables lower precision components to produce a higher-quality tunable white luminaire or replacement lamp. Pre-calibrated to a typical 2 SDCM accuracy, this network enabled chip-scale solution uses a simple text-based smart lighting command set via the serial UART interface to deliver easy integration to standard network clients. Legacy controls are also supported with direct connection to 0-10V controls,. Control outputs include direct PWM management of digital LED drivers or analog 0-10V for standard dimmable drivers.

This product suits for the following applications:

  • Integrated smart lighting control of variable CCT white lighting solutions
  • Intelligent, networked solid-state lighting manager for variable CCT and daylight harvesting
  • Networked lighting systems with IoT sensor expandability
  • Commercial, retail, and residential white/color changing LED lighting systems
  • Luminaires intended to meet California Title 24 daylighting requirements


Title Category Headline Buy
AS7221/20/11/10 Smart Lighting IntegrationKit Application Board Smart Lighting Integration Kit for AS722x/1x


Type Description Language
Evaluation Software AS72xx Firmware Update using GUI EN
App Configuration Tool for AS72xx EN
Evaluation Software AS7221_DashBoard_Software_For_AS7221 EN
App AS7221 Android App EN

Technical documents

Type Description Language
Datasheet AS7221 CCT Tuning Smart Lighting Manager English
Application Note How to program AS72xx firmware with FlashCatUSB English
Application Note External Flash program and update English
Application Note AS72xx – EEPROM Updating using I2C 1V02 English
Application Note AS72xx External Flash program and update 10V1 English
Application Note AS72xx How to Flash AS72xx Firmware using English
Application Note True Color Luminaire Design Bluetooth Connected English
Application Note AS72xx How to Program AS72xx Firmware with FlashCatUSB 1V24 English
User Guide AS7221 Spectral Sensor Dashboard Installation & Operation Guide English
User Guide AS7221 Smart Lighting Integration Kit (SLIK) User Guide English
Other Product Document ams Smart Lighting Short Intro-Jun 2018 English


Type Description Language
Product Change Notification CN25-2019 (Customer Information AS72xx) English

Other information

Type Description Language
Block Diagram AS7221 Block Diagram English
AS7221 Video

AS7221 Sensor Driven Lighting

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