ams AS1113-BSSU

The AS1113 is designed to drive up to 16 LEDs through a fast serial interface and features 16 output constant current drivers and an on-chip 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. Output current is adjustable (up to 50mA/channel) using an external resistor (REXT). The serial interface with Schmitt trigger inputs includes an integrated shift register. 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/openLED/shorted-LED diagnostics results. The AS1113 also features a low-current diagnostic mode to minimize display flicker during fault testing. The AS1113 is available in a 24-pin SSOP and the 28-pin QFN (5x5mm) package.

• 16 Constant-Current Output Channels
• Excellent Output Current Accuracy - Between Channels: <±3% - Between Devices: ±6%
• Output Current Per Channel: 0.5 to 50mA
• Controlled In-Rush Current
• Over-Temperature, Open-LED, Shorted-LED Diagnostic Functions
• Low-Current Test Mode
• Global Fault Monitoring
• Low Shutdown Mode Current: 10μA
• Fast Serial Interface: 50MHz
• Cascaded Configuration
• Extremely Fast Output Drivers Suitable for PWM
• 24-pin SSOP and 28-pin QFN (5x5mm) Package

• Fixed- or slow-rolling displays using static or multiplexed LED matrix and dimming functions
• Large LED matrix displays
• Mixed LED display and switch monitoring
• Displays in elevators
• Public transports (underground, trains, buses, taxis)
• Large displays in stadiums and public areas
• Price indicators in retail stores
• Promotional panels
• Bar-graph displays
• Industrial controller displays
• White good panels
• Emergency light indicators
• Traffic signs