Product category:
Communications ICs (Wired)
News Release from: National Semiconductor | Subject: DP83847
Edited by the Electronicstalk Editorial
Team on 09 May 2002
Speedy Ethernet transceiver shrinks to
leadframe
National Semiconductor has a new single fast Ethernet physical layer (PHY) transceiver designed for easy implementation in home and enterprise networking solutions.
Continuing its innovations in networking and analogue design, National Semiconductor has launched a new single fast Ethernet physical layer (PHY) transceiver designed for easy implementation in home and enterprise networking solutions Offered in the smallest package in the industry, this new DsPHYTER device from National is ideal for power-, cost- and space-sensitive applications such as PC local-area-network (LAN)-on-motherboards, network adapters, network printers, gaming consoles and broadband modems
This article was originally published on Electronicstalk on 5 Jan 2001 at 8.00am (UK)
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"National Semiconductor's DP83847 Ethernet PHY exceeded all of our performance tests", said Drew Henry, senior director of platform products at Nvidia Corp.
"The outstanding reliability and interoperability of this device enables NVIDIA to provide a robust, high-performance networking solution across our entire range of nForce platform processors and core-logic reference designs".
National's latest device in its DsPHYTER family, the DP83847, is a full-featured single fast Ethernet PHY with integrated PMD sublayers to support both 10base-T and 100base-TX Ethernet protocols over Category 3 (10Mbit/s) or Category 5 (100/1000Mbit/s) unshielded twisted pair cables.
Further reading
Leadless leadframe package shrinks LDO
National Semiconductor has introduced a full-featured 500mA LDO regulator for medium-current applications in computing devices and portable products.
Boomer shrinks stereo headphone amplification
New from National Semiconductor, the LM4811 Boomer audio amplifier is a 105mW stereo headphone amplifier for use in 3 and 5V systems requiring a headphone output and volume control.
The device is offered in a 9 x 9 x 0.75mm 56-leadless leadframe package, National's pioneering leadframe-based chip scale package which enables reduced thermal impedance as well as reduced PCB space for mounting.
Typical power consumption of the DP83847 is less than 350mW, among the lowest in the industry.
The device can be supplied by a single 3.3V power source.
Manufactured on the company's 0.18-micron CMOS process technology, National's DP83847 delivers the most optimal combination of power, package and price for its targeted applications.
"National continues to drive the fast growing Ethernet market with innovative solutions built upon our analogue heritage and expertise", said Anthony Chiu, business management director of National's wired communication division.
"Nvidia's confidence in our new DsPHYTER device demonstrates National's strength in providing high-quality Ethernet solutions to customers".
The DP83847 uses on-chip DSP technology and digital phase lock loops for robust performance under all operating conditions, enhanced noise immunity and lower external component counts when compared to analogue solutions.
Featuring IEEE 802.3 compliant auto-negotiation at speeds of 10 and 100Mbit/s, the DP83847 interfaces to twisted pair media via an external transformer.
It also interfaces directly to media access controller devices through the IEEE 802.3u standard media independent interface ensuring interoperability between products from different vendors.
The DP83847 DsPHYTER device is now available for shipment, housed in a 56-leadless leadframe package.
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