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Intersil op amp offers better fidelity

Posted: 27 Sep 2004 ?? ?Print Version ?Bookmark and Share

Keywords:intersil? operational amplifier? el1517?

Intersil Corp. announced the availability of a new high-speed dual operational amplifier designed for use with very-high-bit-rate digital subscriber line (VDSL) and asymmetric digital subscriber line (ADSL) line driving in discrete multi-tone (DMT) based solutions aimed at video-on-demand service applications.

The latest addition to the company's family of xDSL line drivers, the EL1517 makes use of Intersil's trench isolated complementary bipolar process to achieve low distortion and <500mW/port total power consumption in VDSL DMT applications. The driver has been optimized for 5-band VDSL signaling requiring high bandwidth and low distortion in the 4MHz to 17MHz frequency range. It can be used for VDSL Central Office (CO) or Customer Premise (CP) applications, as well as in ADSL, ADSL2+ CPE applications since it exceeds the requirements for these standards.

The bipolar transistor-based EL1517 offers better fidelity than similar CMOS line drivers integrated in some VDSL AFEs, Intersil claimed. Since the EL1517 can be used with up to a 12V supply rail, this allows for use of transformer ratios that maintain better signal to noise ratio for the received signal as compared to CMOS solutions using 5V supply rails. This can provide higher data rates and longer reach in VDSL applications.

Offered in the 16-pin 4-by-4mm MLF package at 16mm? per port, this new line driver offers one of the industry's smallest footprint for VDSL line card designs. The EL1517 is priced at 90 cents each in 10,000-piece quantities. Additional information on Intersil's DSL line drivers and receivers can be found online.

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