2011

LED Driver

altAustriamicrosystems (Raleigh, NC) has announced a 30V, 40mA, 16-channel LED driver with 12-bit pulse width modulation (PWM), dot correction, and diagnostics. With a 30V LED supply voltage, the AS1121 reduces external support components and can therefore be used directly with 24V (or higher) supplies. The AS1121 features a 6- bit dot correction feature for full-color LED displays.

Each of the 16 channels can be individually adjusted by a 4096- step greyscale PWM brightness control running at 10 MHz, as well as by a 64-step constant-current sink for dot correction. The greyscale control and dot correction circuitry are accessible via the SPI-compatible serial interface. A single external resistor sets the maximum current value of all 16 channels. An open-LED detection function indicates a broken or disconnected LED at one or more of the outputs. Other features include an over-temperature signal and a power-down pin that can put the AS1121 LED driver IC into a 40 nA standby mode.


For Free Info Visit http://info.hotims.com/34459-208

White Papers

Aqueous Critical Cleaning: A White Paper
Sponsored by Alconox
Tubing & Hose Buying Tips
Sponsored by Newage Industries
Force Sensors for Design
Sponsored by Tekscan
Selecting Miniature Motors for your Medical Devices
Sponsored by Portescap
Working With Mechanical Motion Subsystems
Sponsored by Bell Everman
An Alternative to Check Fixtures
Sponsored by Faro

White Papers Sponsored By: