ams AG - global leader in the design and manufacture of high performance analog ICs (integrated circuits)

AS1121 LED Driver IC

16ch 40mA 30V PWM LED driver IC

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The AS1121 is a, SPI interfaced, 40mA 16 channel direct LED driver IC with 12-bit internal PWM and 6-bit analog current adjustment. It can detect open/short LED position during operation. The AS1121 allows up to 30V on the LED outputs.


Key Features

  • 12bit PWM control (4096 steps)
  • 6-bit analog current control
  • Open/short error detection
  • Fast output drivers

Key Benefits

  • 6.8 billion colors
  • RGB LED white point adjustment
  • Improved picture quality & reduced maintaince cost through identifying defect LEDs & its position
  • Excellent PWM performance over all duty cycles

Product Facts

Outputs [#] 16
LED current per output [mA] 40
Features 12-bit PWM, 6-bit DOT, low EMI
Error detection
LED-to-LED matching [%] 1.5
Supply voltage [V] 3.1 to 3.6V Logic; 30V LED
Package TQFN(5x5)-32

Additional Information

  • Public Information Displays
  • Stadium Displays
  • Illumination
  • Ambient Light
  • TV Ambient Light