Clock distribution is a key element of system design. Ever increasing bus speeds and bus widths in high performance systems has made this task of timing management a huge challenge. The demand for fast edge rates to meet timing budget constraints has made the EMI challenge even more difficult. (Electro-Magnetic Interference or EMI is the radiation of undesired Electro-Magnetic waves and caused by switching signal).
This product is the merger of two widely used technologies of Zero Delay Clocking and Spread Spectrum clock modulation for EMI reduction. This new family of devices provides an EMI reduction device that can be directly dropped in the path of an offending clock and still maintain the same phase and timing relationship with the synchronized data. This allows a true drop in solution to EMI problems caused by clocks.
In its initial offering Alliance has introduced the ASM3P62300A/B/C available in an 8 pin package and providing a single EMI compliant phase aligned output and the ASM3P62300D/E available in 16 pin packages and providing 4 phase aligned EMI compliant outputs with pin to pin skews guaranteed to be less than 250pS. In addition, the 16-pin versions offer a Delay Control pin that can vary the input to output delay using a capacitive load. This can be used to achieve zero input-to-output phase shifts. These products target frequencies from 15 MHZ to 50 MHZ and offer selectable fractional cycle slip and deviation.
These devices are crucial in applications like data-communications and telecom, as well as industrial and consumer applications where CLOCK-DATA alignment needs to be maintained (LAN, USB, etc). The table below details the 3.3V Zero Cycle slip devices in the initial release. Follow-on products will extend the frequency and voltage range.
Device SS% Deviation Differential Cycle Slip
(Nd)
------------------------- ------ ---------- --------------------------
8 Pin Devices with 1 output
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0 +/-0.5 % +/-0.125
ASM3P623S00A ------ ---------- --------------------------
1 +/-1 % +/-0.25
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0 +/-0.25 % +/-0.125
ASM3P623S00B ------ ---------- --------------------------
1 +/-0.5 % +/-0.25
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0 +/-0.125 % +/-0.125
ASM3P623S00C ------ ---------- --------------------------
1 +/-0.25 % +/-0.25
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16 Pin Devices with 4 outputs
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0 +/-0.5 % +/-0.125
ASM3P623S00D ------ ---------- --------------------------
1 +/-1 % +/-0.25
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0 +/-0.25 % +/-0.125
ASM3P623S00E ------ ---------- --------------------------
1 +/-0.5 % +/-0.25
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0 +/-0.125 % +/-0.125
ASM3P623S00F ------ ---------- --------------------------
1 +/-0.25 % +/-0.25
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Alliance offers Commercial and Industrial temperature grades, with standard tin-lead or full RoHS-compliant products. According to Narendar Venugopal, General Manager of Alliance's Mixed-Signal Business Unit, "With this new product introduction Alliance Semiconductor continues to demonstrate its ability to provide innovative solutions that meet the challenges of EMI compliance in an expanding consumer market."
Samples are available today, with initial pricing set at $1.50 in 1K quantities. Full data sheet and product specifications are available online at http://www.alsc.com.
About Alliance:
Alliance Semiconductor Corporation (Nasdaq: ALSC) is powering every application with high performance solutions for the communications, computing and consumer electronics markets. Utilizing advanced process technologies and design expertise, Alliance provides leading OEMs with a broad portfolio of complementary technologies including analog and mixed-signal products, chip-to-chip connectivity products, networking controllers and high-performance memories. Alliance addresses the complete needs of system developers by leveraging its proprietary advances in Electromagnetic Interference (EMI) reduction, power management and timing technology, HyperTransport(TM) I/O connectivity and specialized memory solutions for next-generation applications. Founded in 1985, Alliance is headquartered in Santa Clara, Calif., with design centers in Bangalore and Hyderabad, India. The company is publicly traded and included in the S&P 600 Index. Additional information is available on the Alliance Web site at: http://www.alsc.com.
Contact:
Alliance Semiconductor Corporation, Santa Clara Narendar Venugopal, 408-855-4900 Email Contact or Press Contact: Shelton Public Relations Katie Olivier, 972-239-5119 Email Contact