ICS8530 datasheet(7/12 Pages) ICST

Part #	ICS8530

Description	LOW SKEW, 1-TO-16 DIFFERENTIAL-TO-2.5V LVPECL FANOUT BUFFER

PDF	12 Pages

Scroll/Zoom	100%

Manufacturer	ICST [Integrated Circuit Systems]

Direct Link	http://www.icst.com

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7 / 12 page

ICS8530DY

www.icst.com/products/hiperclocks.html

REV. C AUGUST 7, 2001

Integrated

Circuit

Systems, Inc.

ICS8530

LOW SKEW, 1-TO-16

DIFFERENTIAL-TO-2.5V LVPECL FANOUT BUFFER

APPLICATION INFORMATION

WIRING THE DIFFERENTIAL INPUT TO ACCEPT SINGLE ENDED LEVELS

Figure 8 shows how the differential input can be wired to accept single ended levels. The reference voltage V_REF ~ V

CC/2 is

generated by the bias resistors R1, R2 and C1. This bias circuit should be located as close as possible to the input pin. The ratio of

R1 and R2 might need to be adjusted to position the V_REF in the center of the input voltage swing. For example, if the input clock

swing is only 2.5V and V

CC = 3.3V, V_REF should be 1.25V and R2/R1 = 0.609.

FIGURE 8 - SINGLE ENDED SIGNAL DRIVING DIFFERENTIAL INPUT

CLK_IN

0.1uF

V_REF

ICS8530 Datasheet(PDF) 7 Page - Integrated Circuit Systems