ams AS1109
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. The serial interface with Schmitt trigger inputs includes an integrated shift register.| Part No. | AS1109 |
|---|---|
| Datasheet | AS1109 Download |
| Manufacturer |  ams |
| Description | 8-Bit LED Driver |
| Buy | Stock & Price |
GENERAL DESCRIPTION
Output current is adjustable (up to 100mA/channel) using an external resistor (REXT). Additionally, an internal data register stores the currently displayed data. The device features integrated diagnostics for overtemperature, open-LED, and shorted-LED conditions. Integrated registers store global fault status information during load as well as the detailed temperature/open-LED/shorted-LED diagnostics results. The AS1109 also features a low-current diagnostic mode to minimize display flicker during fault testing. With an operating temperature range from -40 to +125°C the AS1109 is also ideal for industrial applications. The AS1109 is available in a 16-pin SOIC-150, a 16-pin QFN (4x4mm) and the 16-pin QSOP-150 package. Figure 1. Main Diagram and Pin Assignments 2 KeyFEATURES
●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 Cur...
