Opto-Electronics


LED driver supports block dimming

20 February 2008 Opto-Electronics

austriamicrosystems has co-developed a new high precision LED driver with LG.Philips LCD, a leading provider of LCD displays. Designed for LCD TV backlight applications, the innovative AS3693 allows dimming of multiple segments of the LCD TV backlight, enabling highest contrast ratios and best picture quality.

So-called block dimming results in only the required segments of the backlight being on, making bright spots in the TV picture really bright and dark parts completely black.

The AS3693 offers control of 16 LED channels, where each channel can be controlled completely independently via built-in PWM generators while withstanding up to 50 V.

The device offers high-precision current control of 0,5% accuracy, and a chain of drivers can be controlled via SPI or I²C for larger LCD panels. External clock and synchronising inputs allow the synchronisation of the LCD backlight with the TV picture. Built-in safety features include thermal shutdown as well as open- and short-circuit LED detection.

For more information contact ASIC Design Services, +27 (0)11 315 8316, [email protected], www.asic.co.za, NuVision Electronics, +27 (0)11 894 8214, [email protected], www.nuvisionelec.co.za



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Microchip SoC FPGA
ASIC Design Services DSP, Micros & Memory
Microchip Technology introduced the RT PolarFire SoC FPGA, the first real-time Linux capable, RISC-V-based microprocessor subsystem on a proven RT PolarFire FPGA platform.

Read more...
Advanced HMI delivers enhanced durability
Fox Controls Rand Opto-Electronics
This compact touchscreen HMI from IDEC provides essential visualisation and high-performance multitouch control, even in the most space-limited applications.

Read more...
Powerful UVC disinfection
Opto-Electronics
The S3535-H emitter generates an output power of more than 150 mW per chip at 265 nm, providing the strongest germicidal effect currently available on the market.

Read more...
Front panels for electronics
Seven Labs Technology Opto-Electronics
In the world of electronics, the significance of a well-designed front panel cannot be overstated as it serves not only as the first point of interaction between users and devices, but also plays a crucial role in the functionality and aesthetics of electronic products.

Read more...
Cree: Illuminating the future of LED technology
Altron Arrow Editor's Choice Opto-Electronics
As a pioneer in this field, Cree LED has been instrumental in shaping the LED landscape, driving innovation and performance in this sector.

Read more...
Development kit for MIL-STD-1553 dual transceiver
ASIC Design Services Telecoms, Datacoms, Wireless, IoT
Holt Integrated Circuits has announced the introduction of ADK-1592, a development kit designed to help customers interface Holt’s recently announced HI-1592 radiation hardened transceiver.

Read more...
Development kit for programmable 16-channel low-side driver
ASIC Design Services DSP, Micros & Memory
Holt Integrated Circuits has announced the introduction of ADK-84216, a development kit designed to demonstrate the features of Holt’s recently announced programmable 16-channel low-side driver, HI-84216.

Read more...
Microchip’s RTG4 FPGAs achieve highest space qualification
ASIC Design Services DSP, Micros & Memory
QML Class V is the highest level of qualification for space components, and a necessary step to satisfy mission-assurance requirements on the most critical space missions such as human-rated, deep space, and national security programmes.

Read more...
New optical sensors for object detection
Opto-Electronics
A special feature of the Würth Elektronik sensors is that they filter out visible light up to 800 nm, rather than just up to 700 nm, like many other sensors of this type.

Read more...
HTML5 WebPanel with Linux, Android, or AutomationBrowser
Vepac Electronics Opto-Electronics
Having a front protection rating of IP65, and additional features such as Wi-Fi, Bluetooth, USB, RS232 integrated, these panels are an excellent solution for most industrial applications.

Read more...