AS7221 CCT Tuning Smart Lighting Manager
Tunable white lighting, simplified!
Features
- 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
Benefits
- 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

Tools
Title | Category | Headline | Buy |
---|---|---|---|
AS7221/20/11/10 Smart Lighting IntegrationKit | Application Board | Smart Lighting Integration Kit for AS722x/1x |
Resources
Type | Description | Language | ||
---|---|---|---|---|
Evaluation Software | AS72xx_EvalSW_v5-1-0.zip AS72xx Firmware Update using GUI | EN | ||
App | AS72xx_App_v5-1.zip Configuration Tool for AS72xx | EN | ||
Evaluation Software | AS7221_EvalSW_v4-2-1.zip AS7221_DashBoard_Software_For_AS7221 | EN | ||
App | AS7221_App_v2017-09-22.zip 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 |
Notifications
Type | Description | Language | ||
---|---|---|---|---|
Product Change Notification | CN25-2019 (Customer Information AS72xx) | English |
Other information
Type | Description | Language | ||
---|---|---|---|---|
Block Diagram | AS7221 Block Diagram | English |