ABB0203 Datasheet, PDF (1/6 Pages) Abracon Corporation – Low Skew Output Buffer

ABB0203
Low Skew Output Buffer
FEATURES
• Frequency range 75 ~ 180MHz.
• Internal phase locked loop will allow spread spec-
trum modulation on reference clock to pass to the
outputs (up to 100kHz SST modulation).
• Zero input - output delay.
• Less than 700 ps device - device skew.
• Less than 250 ps skew between outputs.
• Less than 150 ps cycle - cycle jitter.
• Output Enable function tri-state outputs.
• 3.3V operation.
• Available in 8-Pin 150mil SOIC.
DESCRIPTION
The ABB0203 is a high performance, low skew, low
jitter zero delay buffer designed to distribute high
speed clocks and is available in an 8-pin SOIC pack-
age. It has four outputs that are synchronized with the
input. The synchronization is established via CLKOUT
feed back to the input of the PLL. Since the skew be-
tween the input and output is less than ±350 ps, the
device acts as a zero delay buffer.
BLOCK DIAGRAM
PIN CONFIGURATION
REF 1
CLK2 2
CLK1 3
GND 4
8 CLKOUT
7 CLK4
6 VDD
5 CLK3
Remark
If REF clock is stopped for more than 10us after it has already been
provided to the chip, and after power-up, the output clocks will
disappear. In that instance, a full power-up reset is required in order
to reactivate the output clocks.
REF
PLL
CLKOUT
CLK1
CLK2
CLK3
CLK4
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: [phone] www.Abracon.com 03/21/05 Page 1