AS1109 Datasheet PDF

AMSCO AS1109

The AS1109 was designed to drive up to 8 LEDs through a fast serial interface and features 8 output constant current drivers and an on-chip diagnostic readback function. The high clock-frequency (up to 30MHz), adjustable output current, and flexible serial interface makes the device perfectly suited for high-volume transmission applications. The serial interface includes an integrated shift register with Schmitt trigger inputs allows display data to be shifted-in.

Part No.	AS1109
Datasheet	AS1109 Download
Manufacturer	AMSCO
Description	Constant-Current 8-Bit LED Driver
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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 shift registers store global fault status information during load as well as the detailed temperature/ open-LED/shorted-LED diagnostics results. 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: 10µA Fast Serial Interface: 30MHz Cascaded Configuration Extremely Fast Output Drivers Suitable for PWM ! ! ! ! ! ! e DataShe The AS1109 also features a low-current diagnostic ! 16-pin SOIC-150 and 16-pin SSOP Package DataSheet4U.com mode to minimize display flicker during fault testing.

AS1109 Datasheets by Manufacturer

1 datasheets

Part Number	Manufacturer
AS1109	ams