ref="http://www.austriamicrosystems.com/" target="_blank">austriamicrosystems expanded its LED driver portfolio with the AS1112, a full color LED driver ideally suited for full color applications such as LED video displays, LCD TV backlighting, indoor/outdoor full-color LED displays and large-size stadium displays.
The AS1112 features sixteen 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.
Another highlight of the AS1112 is the built-in LED error detection. Easy and intuitive to use, the AS1112 can detect any open- or short-circuit as well as any over-temperature occurrence. Two temperature thresholds allow detailed thermal surveillance of the system. For immediate detection of errors a global error pin is available. Furthermore, a detailed error report can be read out with the exact position of the broken LED. The AS1112 uses the serial data input/output lines for the detailed error information readback so that no additional PCB tracks are needed for LED error diagnostics.
The fast 30MHz serial interface of the AS1112 ensures high refresh rates even for huge LED display modules. The AS1112 offers very low power consumption, additionally, a power-down function allows reducing the supply current to 40nA in standby mode. With an operating temperature range from -40 to +85°C, the AS1112 is ideal for industrial as well as outdoor applications. The IC is available in the small size, thermally efficient 32-pin TQFN (5x5mm) package, easily handling high output power and allowing a very small pitch between LED pixels.
The AS1112 features sixteen 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.
Another highlight of the AS1112 is the built-in LED error detection. Easy and intuitive to use, the AS1112 can detect any open- or short-circuit as well as any over-temperature occurrence. Two temperature thresholds allow detailed thermal surveillance of the system. For immediate detection of errors a global error pin is available. Furthermore, a detailed error report can be read out with the exact position of the broken LED. The AS1112 uses the serial data input/output lines for the detailed error information readback so that no additional PCB tracks are needed for LED error diagnostics.
The fast 30MHz serial interface of the AS1112 ensures high refresh rates even for huge LED display modules. The AS1112 offers very low power consumption, additionally, a power-down function allows reducing the supply current to 40nA in standby mode. With an operating temperature range from -40 to +85°C, the AS1112 is ideal for industrial as well as outdoor applications. The IC is available in the small size, thermally efficient 32-pin TQFN (5x5mm) package, easily handling high output power and allowing a very small pitch between LED pixels.
