Fairchild Semiconductor beats the noise with optocoupler for industrial fieldbus communications

The key enabler is Fairchild’s Optoplanar® packaging, which assembles the integrated circuits and LED on a coplanar process, rather than a face-to-face or over-under process. Using this technology, the FOD8001 achieves 25kV/µs dynamic Common-Mode Rejection (CMR) at 1500V, and 40kV/µs static Common-Mode Transient Immunity (CMTI) at 1000V.

The FOD8001 answers system engineers’ needs to design robust networks with low transmission-error rates, low system-failure rates and proven reliability over an extended period of time.

 

Microchip unveils first 8-bit LCD-driver MCUs with on-chip touch peripherals

New PIC18F87J90 64-pin and 80-pin LCD-driver MCUs from Microchip Technology are the first 8-bit MCUs to include a Real-Time Clock and Calendar (RTCC) and a Charge Time Measurement Unit (CTMU) for capacitive touch sensing or precise time measurement. Flash memory density is from 64kByte to 128kByte Flash, with 4kByte RAM. The devices are pin-compatible with the PIC18F85J90 family, enabling easy migration across Microchip’s entire LCD-driver MCU family.

The new devices allow designers to add features such as capacitive or inductive touch-sensitive user interfaces to display applications.

 

Vishay achieves industry’s lowest on-resistance for 20V SO-8 power MOSFETs

Vishay has achieved the lowest ever on-resistance for a 20V p-channel MOSFET within the industry-standard SO-8 footprint. With on-resistance of 1.9mΩ at 10V, the Si7137DP dramatically reduces power losses in adapter switching and load switching applications. The on-resistance is 2.5mΩ at 4.5V and 3.9mΩ at 2.5V. In power supplies that must switch between an AC line source and a battery, using the Si7137DP in the adapter switch reduces conduction losses to save energy and extend the battery-recharge interval.

 

Power inductors from BI Technologies rated for 180°C operation

TT electronics BI Technologies has developed a high-temperature power inductor capable of operating at temperatures up to 180°C, which can be used in automotive under-hood environments and is also specified for industrial applications. The HA55 series inductors feature a powdered iron-alloy core material as part of a robust design suitable for use as a DC/DC converter or in high-current applications. Low DC Resistance (DCR), from 1.7mΩ to 3.35mΩ, minimises power losses.