1AI01 datasheet(9/14 Pages) ICST

部件名	1AI01

功能描述	FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V 125MHZ LVPECL CLOCK GENERATOR

PDF	14 Pages

Scroll/Zoom	100%

制造商	ICST [Integrated Circuit Systems]

网页	http://www.icst.com

标志

9 / 14 page

843021AGI-01

www.icst.com/products/hiperclocks.html

REV. A NOVEMBER 30, 2004

Integrated

Circuit

Systems, Inc.

ICS843021I-01

FEMTOCLOCKS™CRYSTAL-TO-3.3V, 2.5V

125MHZ LVPECL CLOCK GENERATOR

PRELIMINARY

APPLICATION SCHEMATIC

Figure 4 shows an example of ICS843021I-01 application

schematic. In this example, the device is operated at

CC = 3.3V. The decoupling capacitor should be located as

close as possible to the power pin. The input is driven by a

25MHz quartz crystal. For the LVPECL output drivers, only

two termination examples are shown in this schematic.

Additional termination approaches are shown in the LVPECL

Termination Application Note.

FIGURE 4. ICS843021I-01 SCHEMATIC EXAMPLE

Zo = 50

Optional Termination

.1uF

VCC = 3.3V

Zo = 50 Ohm

133

25MHz

843021I-01

VCC

XTAL_OUT

XTAL_IN

VEE

nQO

Vcc

133

82.5

27pF

Zo = 50

27pF

82.5

Zo = 50 Ohm

VCC

18pF

10uF

3.3V

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