AS1109
Overview
The AS1109 is designed to drive up to 8 LEDs through a fast serial interface and features 8 output constant current drivers and an onchip diagnostic read-back function. The high clock-frequency (up to 50MHz), adjustable output current, and flexible serial interface makes the device perfectly suited for high-volume transmission applications.
- Main Diagram and Pin Assignments 2 Key Features
- 8 Constant-Current Output Channels
- Excellent Output Current Accuracy - Between Channels: ±2% - Between AS1109 Devices: ±2%
- Output Current Per Channel: 0.5 to 100mA
- Controlled In-Rush Current
- Over-Temperature, Open-LED, Shorted-LED Diagnostics Functions
- Low-Current Test Mode
- Global Fault Monitoring
- Low Shutdown Mode Current: 3µA
- Fast Serial Interface: up to 50MHz
