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Quad PLL timer claims first with two-wire I2C interface

San Jose, Calif.&#8212Cypress Semiconductor's CY24488 lays claim to the industry's first quad phase-locked loop (PLL) timing device with a two-wire I2 C interface.

Thus the chip allows manufacturers to drastically cut time-to-market and reduce inventory by directly programming system frequencies on the printed circuit board. The alternative is to order factory-programmed parts.

Suited to meeting critical timing requirements in digital set-top boxes, DVD recorders, digital TVs and other complex systems requiring synthesis of multiple, unrelated frequencies, the CY24488 replaces multiple crystals. It provides three independent frequencies and one buffered reference frequency. Designers can program the output frequencies over the range of 4.9152 to 148.5 MHz to meet the needs of most modern digital entertainment devices.

The device has an integrated analog voltage controlled crystal oscillator (VCXO) with a minimum pull range of &plusmn120 ppm for maximum frequency resolution and better frequency tracking. It also includes programmable output drive to minimize EMI and a 2.5-volt option to interface with lower voltage ICs without extra circuitry.

Click here to access the product datasheet. The CY24488, in a 16-lead TSSOP package, is priced starting at $1.95 each in 1,000-unit quantities.

Cypress Semiconductor , 1-408-943-2600, www.cypress.com

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