Electronics Technology


LED driver with error detection

11 November 2009 Electronics Technology

austriamicrosystems expanded its LED driver portfolio with the AS1116, an ultra small multiplexed LED driver. The device operates from a single 2,7 V to 5,5 V supply while requiring supply current of 0,6 mA during operation and 200 nA in shutdown mode.

The AS1116 can drive either eight 7-segment digits or 64 individual LEDs with 47 mA per digit or 5,5 mA per LED. The current can be easily adjusted by an external resistor. With an excellent accuracy of ±3%, the driver improves picture quality of LED displays since intensity variations between LEDs and LED modules are minimised. A 4-bit PWM is implemented for either global digital brightness control or separate dimming of each single digit in 16 steps.

A unique feature of the AS1116 is the built-in LED error detection. The intuitive software interface allows the feature to be easily invoked during normal operation, ensuring rapid error detection. The AS1116 can detect any open- or short-circuit within the multiplexed 8x8 LED array and a detailed error report can be read out with the exact position of the broken LED.

The AS1116 is suitable for operating environments ranging from -40°C to +85°C and requires a small external resistor and a single capacitor. Optimised for space restricted application and offering excellent thermal performance, it is available in a 0,6 mm thin TQFN (4 x 4 mm) package. For easier handling, a QSOP 24-pin package is also available.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

MCU for low-power, IoT applications
NuVision Electronics DSP, Micros & Memory
Silicon Labs recently announced the PG26, a general-purpose microcontroller with a dedicated matrix vector processor to enhance AI/ML hardware accelerator speeds.

Read more...
ICs vs modules: Understanding the technical trade-offs for IoT applications
NuVision Electronics Editor's Choice DSP, Micros & Memory
As the IoT continues to transform industries, design decisions around wireless connectivity components become increasingly complex with engineers often facing the dilemma of choosing between ICs and wireless modules for their IoT applications.

Read more...
Marktech’s latest LEDs and photodiodes
NuVision Electronics Test & Measurement
Designed for precision sensing and emission tasks, Marktech’s optoelectronic lineup serves medical, industrial, aerospace, and environmental markets.

Read more...
Why bis means business for LTE Cat 1 IoT connections
NuVision Electronics Editor's Choice Telecoms, Datacoms, Wireless, IoT
Tomaž Petaros, product manager IoT EMEA at Quectel Wireless Solutions explains why the market for Cat 1bis IoT connections is getting busy.

Read more...
Bluetooth Lite SoCs purpose built for IoT
NuVision Electronics Telecoms, Datacoms, Wireless, IoT
Whether it is enabling predictive maintenance on industrial equipment, tracking assets in dense environments, or running for years on a coin cell battery in ultra-low power sensors, developers need solutions that are lean, reliable, and ready to scale with emerging use cases.

Read more...
PolarFire SoC FPGAs achieve AEC-Q100 qualification
ASIC Design Services DSP, Micros & Memory
Microchip Technology’s PolarFire SoC FPGAs have earned the Automotive Electronics Council AEC-Q100 qualification.

Read more...
High-speed Flash for SoC applications
NuVision Electronics DSP, Micros & Memory
GigaDevice has unveiled the GD25NE series of dual-power supply SPI NOR Flash chips, designed specifically for 1,2 V system-on-chip (SoC) applications.

Read more...
MPLAB PICkit Basic
ASIC Design Services Design Automation
To make its robust programming and debugging capabilities accessible to a wider range of engineers, Microchip Technology has launched the MPLAB PICkit Basic in-circuit debugger.

Read more...
Case Study: Siemens Valor automation solution
ASIC Design Services Editor's Choice Manufacturing / Production Technology, Hardware & Services
Electronics manufacturer BMK used Siemens Valor to enhance accuracy and speed up bill-of-materials quotations.

Read more...
Transistor delivers power from DC to 6 GHz
NuVision Electronics Telecoms, Datacoms, Wireless, IoT
WAVEPIA has released their latest GaN-on-SiC transistor, the WP2806015UH(S), that delivers 15 W from DC to 6 GHz at 28 V.

Read more...