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AS7220 Smart Daylighting Manager

Calibrated CCT and Lumen Maintenance Smart Lighting Manager

The AS7220 Smart Lighting Manager™ is part of the ams Cognitive Lighting family of products that enable lights to autonomously adapt to human lighting and energy conservation needs. The AS7220 includes an advanced Cognitive Lighting Engine (CLE) to optimize CCT and lumen maintenance and color maintenance via a combination of PWM and/or 0-10V controls with dimming ballasts. Configurable single CCT lifetime target values are stored by the luminaire manufacturer within the attached flash EPROM, or are selectable using an I2C port expander. Target lumen output lux-criteria are similarly configurable and are used by the AS7220 to correlate internal lux to manage PWM mapping to allow automatic compensation for lumen output to be maintained over the life of the light.

CIE Tri-Stimulus XYZ chromatic white/color sensing provides accurate CCT measurement to allow closed loop compensation to the preset target. The AS7220 is delivered fully calibrated, while the integrated intelligence enables lifetime CCT calibration to within 2-4 Macadam steps.

Block diagram of the AS72200 Smart Daylighting Manager

(Click to Enlarge)

Key Features

  • XYZ tri-stimulus chromatic sensing
  • Delivers algorithmic closed loop target point white CCT and lumen output tuning (single CCT)
  • Presets configureable into flash memory, or via I2C port expander
  • Calibrated nano-optic silicon interference filters
  • 20-pin LGA 4.5 x 4.7 x 2.5mm, 0°C to +85°C

Key Benefits

  • Accurage supervision to a single CCT target to maintain color temperature over lifetime
  • Delivers lifetime lumen maintenance via internal lux-to-PWM remapping
  • Rapid Luminaire Integration
  • Lifetime Calibrated Sensing
  • Compact Package with no Added Optics Required

AS7220 Applications

Autonomous, solid-state lighting manager for long term color point and lumen maintenance.

  • Enables luminaire manufacturers to maintain rigid color-point and/or lumen maintenance standards requirements
  • Luminaires intended to meet California Title 24 daylighting requirements
  • Commercial, retail, and residential white/color LED lighting systems
  • Standalone lighting systems with select ams sensor expandability

AS7220 Product Facts

Sensor Type CIE Tri-Stimulus XYZ
Application Closed loop color point and lumen compensation
Reference Networking n/a
Smart Ltg Command Set n/a
Lux/CCT Control Hardware Config
I2C Master
Package 20-pin LGA with aperture