16-Channel LED driver for high performance large-size LED displays
( 01 Apr 2008 )
Austriamicrosystems’s AS1112 is a full colour LED driver suited for full colour applications such as LED video displays, LCD TV backlighting, indoor/outdoor full-colour LED displays and large-size stadium displays.
The AS1112 full colour LED driver offers an integrated PWM of 12-bit with impressive 4,096 grayscale steps per color, reaching up to 68 billion colours with RGB. Additionally, the integrated 6-bit dot-correction allows adjusting the output current in 64 steps compensating for LED luminous mismatch. With an excellent accuracy of ±4.5% between channels and ICs plus the dot-correction the AS1112 dramatically improves the picture quality of LED displays since variations of intensity between LEDs and LED modules completely disappear. The AS1112 also offers outstanding line regulation of 2.5% and load regulation of 0.5%.
The AS1112 features 16 regulated current ports, which provide constant currents for driving LEDs within a wide range of forward voltages. The AS1112’s output ports are guaranteed to endure a maximum voltage of 15V allowing multiple LEDs to be combined in series to a single pixel to increase brightness. Currents can be adjusted from 0 to 80mA via an external resistor which provides utmost flexibility in controlling LED brightness.
Austriamicrosystems, www.austriamicrosystems.com
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The AS1112 offers 12-bit PWM control and 6-bit dot-correction combined with powerful diagnostic features.
