特性
- Packaged as 8-pin SOIC or die
- Pb (lead) free package
- Upgrade of popular 501 with: - changed multiplier table - faster operating frequencies - output duty cycle at VDD/2
- Zero ppm multiplication error
- Input crystal frequency of 5 - 27 MHz
- Input clock frequency of 2 - 50 MHz
- Output clock frequencies up to 200 MHz
- Extremely low jitter of 25 ps (one sigma)
- Compatible with all popular CPUs
- Duty cycle of 45/55 up to 200 MHz
- Mask option for nine selectable frequencies
- Operating voltage of 3.3 V or 5 V
- Tri-state output for board level testing
- Industrial temperature version available
- Advanced, low power CMOS process
描述
The 511 Loco™ is the most cost effective way to generate a high quality, high frequency clock output from a lower frequency crystal or clock input. The name LOCO stands for Low Cost Oscillator, as it is designed to replace crystal oscillators in most electronic systems. Using Phase-Locked Loop (PLL) techniques, the device uses a standard fundamental mode, inexpensive crystal to produce output clocks up to 200 MHz. Stored in the chip's ROM is the ability to generate nine different multiplication factors, allowing one chip to output many common frequencies (see table on page 2). The device also has an output enable pin which tri-states the clock output when the OE pin is taken low. This product is intended for clock generation. It has low output jitter (variation in the output period), but input to output skew and jitter are not defined nor guaranteed. For applications which require defined input to output skew, use the 570B.
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