LOW-COST, PROGRAMMABLE, ALL-SILICON SYNTHESIZER PROVIDES FULL SPECTRUM OF FREQUENCIES
DALLAS, TX-July 22, 2002-Dallas Semiconductor introduces the DS1085, the industry's first all-silicon frequency synthesizer with both a programmable master-clock oscillator and dual divider chains. The DS1085 provides a low-cost alternative to crystal-based clock synthesizers in a small 8-pin SO package. Both 3V and 5V versions are available.
The DS1085 is the only frequency synthesizer IC that can accurately generate dual synchronous output frequencies over the full 8kHz to 133MHz range without the use of external crystals, resistors, or other discrete components.
The DS1085 provides a low-cost alternative to crystal-based synthesizers using a minimum of board space. It can be used as a processor peripheral device through a 2-wire interface for dynamic frequency changes or it can be preprogrammed to be used as a fixed-frequency oscillator. The internal master clock is programmable over the full scale of 66MHz to 133MHz. This, in combination with two programmable 3-bit prescalers and a 1-to-1025 divider, allows more than 10 million possible output frequencies.
Dual control pins may be set to act as power-down or output-enable controls, depending on the application. In the power-down mode, the DS1085 is ideal for power-sensitive applications.
All synthesizer settings are stored in EEPROM, providing default conditions during power-up. The DS1085 has better than 1% absolute frequency accuracy. The DS1085 (5V) and the DS1085L (3V) are both available in an 8-pin SO package.
Prices start at $3.00 (1000-up, FOB USA).
Evaluate the DS1085 on the web using an interactive frequency calculator
(http://pdfserv.maxim-ic.com/arpdf/AppNotes/app182.pdf).
|
