GENERAL DESCRIPTION
The DEI 1030 is designed to improve lighting bus tracking from unit to unit.  Bus voltage is converted to a 0-5VDC signal level output that can be used to control analog drive of incandescent bulbs, or input to a microprocessor for pulse-width modulation.  The need for different bus interface devices for each bus voltage is eliminated.  Bus voltage is selected via two open/ground discrete inputs permitting automatic unit adaptation to the system bus voltage.  Lighting bus, common, and gain selection inputs are protected against lightning surges to DO-160C/D category A3 (waveforms 3, 4, and 5).

DEI1030 Block Diagram 

GENERAL DESCRIPTION
The DEI1090 device is a 16 pin bipolar integrated circuit designed to drive nine LEDs and provide Pulse Width Modulated (PWM) dimming control according to the luminance curve of incandescent lamps. The device squares the analog control input and produces a PWM waveform used to enable or disable the current outputs. The LED brightness is controlled by the PWM duty cycle. All nine LEDs are driven at the same adjustable drive current. Drivers can be cascaded to synchronously drive additional LED groups. The dimming control input may be a DC or AC voltage.