defining a degree of excellence 10BASE-T NETWORK COMPONENTS 960048B • Designed for use with AMD multi-port 10Base-T transceiver chipsets, such as the eIMR (79C984A), eIMR+ (79C985) and QuIET (79C988)/IMR2 (79C983) where digital filtering has been incorporated into the silicon • Dual, 2-port (filterless) designs provide cost, space and performance efficiencies • 2000 Vrms isolation • Compliant with IEEE 802.3 standards • Additional differential filtering design available • Robust surface mount packaging, rated to 225ºC peak IR reflow temperature ELECTRICALS AT 25ºC (each channel) Part No. OCL (µH) Min S553-5841-03 S556-5841-09 100 100 Insertion Loss (dB) Max 1-10MHz -1.0 -1.0 Attenuation (dB) Min 30MHz 50MHz 80MHz N/A -1.0 N/A -8.0 Return Loss (dB) Min 5MHz-10MHz N/A -20 -20 -20 Crosstalk (dB) Min 1MHz-10MHz -40 -40 CM-CM Rej (dB) Min 10-30MHz 30-100MHz -40 -40 -30 -30 Schematic A B SCHEMATICS B A MECHANICAL Specifications subject to change without notice. Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel: 201-432-0463 • Fax: 201-432-9542 • E-Mail: [email protected] Website: http://www.belfuse.com defining a degree of excellence 10BASE-T NETWORK COMPONENTS 960048B APPLICATION CIRCUIT APPLICATION NOTES • Bel has developed these part types for use with AMD's product line of quad, 4-port PHY devices that incorporate digital filtering techniques within the silicon itself. Bel's "filterless magnetics" are optimized for this specific application and create a very cost efficient design solution. Each Bel part type contains 2 channels of transmit and receive transformers to provide for wave shaping, high voltage isolation and EMI noise suppression. In certain applications, compliance with IEEE 802.3 standards may required additional differential filtering (Bel P/N S556-5841-19). • Bel has designed these parts as a family of parts with common footprint and pinouts to enable the designer to customize the use of additional differential filtering for optimum system performance. • In multi-port system applications, good PCB layout and proper grounding techniques are very critical to achieve FCC class A and B equipment approvals. Bel recommendations are available and can be provided by contacting our engineering department or your local sales representative. • Bel's low profile, surface mount packaging is ideal for high speed pick and place machinery. Parts can be shipped on tape and reel for high speed placement. Construction processes have been implemented for thermal compatibility with high temperature IR reflow assembly processing. Post dipping of leads assist with PC board solderability. Each part is optically inspected to meet rigid coplanarity requirements. Corporate Office Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302-4496 Tel: 201-432-0463 Fax: 201-432-9542 E-Mail: [email protected] Internet: http://www.belfuse.com Far East Office Bel Fuse Ltd. 8F/8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel: 852-2328-5515 Fax: 852-2352-3706 European Office Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Preston PR1 8UD Lancashire, U.K. Tel: 44-1772-556601 Fax: 44-1772-888366