PDF ICS501A Data sheet ( Hoja de datos )

Número de pieza	ICS501A
Descripción	LOCO PLL Clock Multiplier
Fabricantes	Integrated Circuit Systems
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No Preview Available ! ICS501A LOCO™ PLL CLOCK MULTIPLIER Description The ICS501A LOCOTM 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 or guaranteed. For applications which require defined input to output skew, use the ICS570B. Features • Packaged as 8-pin SOIC or die • ICS’ lowest cost PLL clock • Zero ppm multiplication error • Input crystal frequency of upto 27 MHz • Input clock frequency of upto 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 • Nine selectable frequencies • Operating voltage of 3.3V • Tri-state output for board level testing • 25mA drive capability at TTL levels • Ideal for oscillator replacement • Optimized for output frequencies of upto to 200 MHz • Industrial temperature version available • Advanced, low power CMOS process Block Diagram S1:0 2 Crystal or Clock input X1/ICLK X2 Crystal O s c illa to r Optional crystal capacitors VDD PLL Clock M u ltip lie r Circuitry and ROM GND OE CLK MDS 501A B 1 Revision 120704 Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com 1 page ICS501A LOCO™ PLL Clock Multiplier Parameter Symbol Conditions On-Chip Pull-up Resistor Pin 7 Input Capacitance, S1, S0, and OE Pins 4, 6, 7 Nominal Output Impedance Min. Typ. 270 4 20 Max. Units kΩ pF Ω AC Electrical Characteristics VDD = 3.3 V ±10%, Ambient Temperature 0 to +70° C, unless stated otherwise Parameter Symbol Conditions Min. Typ. Input Frequency, crystal input Input Frequency, clock input Output Frequency, VDD = 3.0 to 3.6V FIN FIN FOUT see page 2 see page 2 0°C to +70°C -40°C to +85°C Output Clock Rise Time Output Clock Fall Time Output Clock Duty Cycle PLL Bandwidth tOR 0.8 to 2.0 V, Note 1 tOF 2.0 to 8.0 V, Note 1 tOD 1.5 V, up to 160 MHz 1 1 45 49-51 120 Output Enable Time, OE high to output on 50 Output Disable Time, OE low to tri-state 50 Absolute Clock Period Jitter One Sigma Clock Period Jitter tja Deviation from mean tjs +70 25 Note 1: Measured with 15 pF load. Max. 27 50 200 TBD 55 Units MHz MHz MHz MHz ns ns % kHz ns ns ps ps MDS 501A B 5 Revision 120704 Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com 5 Page

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Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
ICS501	LOCO PLL Clock Multiplier	Integrated Circuit Systems
ICS501A	LOCO PLL Clock Multiplier	Integrated Circuit Systems
ICS501B	LOCO PLL Clock Multiplier	Integrated Circuit Systems

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