defining a degree of excellence ATM 25.6 MBPS FILTER MODULE 960015A • Designed to meet ATM 25.6 PHY specifications including low frequency cutoff parameter. Can also be used in Token Ring Switch applications. • Compatible with Texas Instruments (380C30/C60), IDT (77105) and Transwitch (ALI-25T) PHY transceivers • For use with either 150 ohm (STP) or 100 ohm (UTP) cable • Low profile, surface mount packaging rated to 225ºC peak IR reflow temperature ELECTRICALS AT 25ºC Part No. 4MHz S556-2006-32 -0.6 Insertion Loss (dB) Max 16MHz 24MHz -1.0 -1.8 36MHz -10 Return Loss (dB) Min 1MHz-17MHz 17MHz-25MHz -16 -9 Common to Common Mode Rej (dB) Min 5MHz 20MHz 200MHz Crosstalk (dB) Min 5MHz 16MHz 24MHz -30 -50 -30 -20 -50 -45 SCHEMATIC 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 ATM 25.6 MBPS FILTER MODULE 960015A APPLICATION CIRCUIT APPLICATION NOTES • The S556-2006-32 can also be used in Token Ring switch applications where the transmit and receive channels can be swapped. For this reason, filtering is implemented on both channels and after the transformer. • The Bel S556-2006-32 is designed for use with a variety of ATM 25.6 PHY transceivers, such as Texas Instruments 380C30 and C60, IDT 77105 and Transwitch ALI-25T. This Bel design incorporates both transmit and receive filtering, impedance matching and EMI common mode noise suppression. The S556-2006-32 impedance matching network allows for utilization in either 100 ohm UTP or 150 ohm STP cable systems. • 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. • Bel's design may also be used in certain 4/16 Mbps Token Ring applications. Consult factory for further information. 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