Linear Technology’s new LT8500 is a pulse width modulation (PWM) generator with 48 independent channels.
Each channel has an individually adjustable 12-bit (4096 steps) PWM register and a 6-bit (64 step) ±50% correction register. All controls are programmable via a simple TTL/CMOS 50 MHz serial data interface.
The IC can be used in a wide variety of PWM-intensive applications such as LED control, as well as industrial and robotic applications. For example, it can be used with three LT3595As, 16-channel LED drivers, to deliver 48 independently dimmed LED strings for locally dimmed LED backlighting for large LCD displays. The correction resister allows matching the light output of each LED string.
The LT8500 operates from a 3 V to 5,5 V input range, enabling it to operate from a wide range of standard power buses. For LED applications, each channel has individual 6-bit dot correction current adjustment and 12-bit grey scale PWM dimming. The 40 ns on-time of the device offers very wide dynamic contrast ratios. Both correction and grey scale dimming are accessible via a serial interface in TTL/CMOS logic.
The chip offers two diagnostic information flags: synchronisation error and open LED. The flags are sent with additional state information, on the serial data interface during status read back. The 50 MHz cascadable serial data interface includes buffering and skew balancing, easing the design for PWM-intensive applications such as large screen LCD dynamic backlighting. The combination of minimal externals and a 5 x 9 mm QFN package provide a highly compact solution footprint for multichannel PWM applications.
Compact direct Time-of-Flight 3D LiDAR module Altron Arrow
Opto-Electronics Electronics Technology AI & ML
The VL53L9 from STMicroelectronics is the first direct Time-of-Flight (dToF) 3D LiDAR all-in-one module in ST’s portfolio, offering a resolution of 2,3K zones, wide field of view, on-chip processing, 100 frames per second, and sensing range from 5 centimeters to 9 meters.
Read more...Digital isolators for I2C interfaces
Analogue, Mixed Signal, LSI
Würth Elektronik has expanded its range of digital isolators with 2-channel bidirectional isolators for I2C communication interfaces.
Read more...Generating negative voltages from a positive supply Altron Arrow
Editor's Choice Passive Components
It is common for IoT devices, industrial sensors, meters, and medical equipment to require both a positive and negative voltage, and this article explains the options available to produce a negative rail from a positive rail supply.
Read more...Addressing latency and signal integrity challenges Altron Arrow
DSP, Micros & Memory
Strengthening Microchip Technology’s data centre solutions portfolio, its XpressConnect retimers support high-bandwidth architectures, while helping reduce integration complexity.
Read more...Precision timing in compact package Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Designed for use in harsh environments, the EX-423 incorporates a four-point mounted quartz crystal structure that improves shock resistance and reduces g-sensitivity.
Read more...EMC limits and levels Altron Arrow
Editor's Choice Circuit & System Protection
As soon as electronics and electrical systems started interfering with each other, the world had to come to some consensus. Considering physics is universal and does not care about what country electrical/electronic products are used in, it should be the same everywhere, right? It is nearly there, but not quite.
Read more...Introducing STM32CubeMX2 Altron Arrow
Design Automation
STMicroelectronics has launched STM32CubeMX2, a new evolution of its popular configuration and code generation tool for STM32 microcontrollers.
Read more...Next-gen SPE Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Next-generation 100/1000BASE-T1 Single Pair Ethernet PHYs integrate MACsec security, time sensitive networking, and functional safety.
Read more...Ultra-low-power smart metering EBV Electrolink
Analogue, Mixed Signal, LSI
ScioSense’s UFC23 sensor combines improved resolution and offset stability with ultra-low standby current, enabling high-end battery-powered water, heat, gas and leak detection meter designs.
Read more...Industrial vibration sensing simplified Altron Arrow
Analogue, Mixed Signal, LSI
The IIS3DWBG1 from STMicroelectronics is a high performance, three-axis digital vibration sensor engineered for demanding industrial applications where accurate motion monitoring is essential.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version