10/100-Mbit/s Ethernet Transceiver Uses CMOS For Low Power

Oct. 13, 2003
Thanks to its fully CMOS architecture, the 78Q2120C 10BaseT/100BaseTX Ethernet transceiver drops power consumption to less than 300 mW. The device replaces the original 78Q2120 biCMOS version. It's designed for desktop PCs, laptops, set-top boxes,...

Thanks to its fully CMOS architecture, the 78Q2120C 10BaseT/100BaseTX Ethernet transceiver drops power consumption to less than 300 mW. The device replaces the original 78Q2120 biCMOS version. It's designed for desktop PCs, laptops, set-top boxes, game consoles, DSL/cable modems, and any other device requiring a low-cost Ethernet port. An integrated Media Independent Interface, encoder-decoders, scrambler/descrambler, dual-speed clock recovery, and auto-negotiation functions are included. The transmitter incorporates an on-chip pulse-shaper and low-power line driver. The receiver features an adaptive equalizer and a baseline restoration circuit required for accurate clock and data recovery. The transceiver interfaces to CAT-5 or CAT-3 UTP. No external filter is required. The 78Q2120C is available now at prices just under $4 in 1000-unit quantities.

TDK Semiconductor Inc.www.tdksemiconductor.com; (714) 508-8800
About the Author

Louis E. Frenzel

Click here to find more of Lou's articles on Electronic Design. 

Sponsored Recommendations

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!