ABE0113 データシートの表示（PDF） - Abracon Corporation

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ABE0113

Low EMI Spread Spectrum Multiplier Clock

Abracon Corporation 

3. TIMING CHARACTERISTICS

ABE0113

Low EMI Spread Spectrum Multiplier Clock

PARAMETERS

Rise Time

Fall Time

Output Duty Cycle

Input to Output Delay

Cycle to Cycle Jitter

SYMBOL

CONDITIONS

Tr

Measured at 0.8V ~ 2.0V @ 3.3V

Tf

Measured at 2.0V ~ 0.8V @ 3.3V

DT

Tcyc-cyc Over output frequency range @ 3.3V

MIN.

0.8

0.78

45

2

TYP.

0.95

0.85

50

MAX.

1.1

0.9

55

4

100

UNITS

ns

ns

%

ns

ps

FUNCTIONAL DESCRIPTION

Selectable spread spectrum and modulation rates

The ABE0113 provides selectable multiplication factor, as well as selectable modulation rate. Selection is made by

connecting pins 2 (S2), 3 (S1), 4 (S0), and 7 (S3) to a logical “zero” or “one”, according to the output clock

selection table on page 1.

Default values for S(0:3) through internal pull-up and pull-down resistor

Selection pins S0 and S3 have an internal pull-down resistor of 30kΩ, pins 2 and 3 (S1 and S2) have an internal

pull-up resistor of 30kΩ. This internal pull-down (or pull-up) resistor will pull the input value to a logical “zero” (or

“one” respectively) by default, i.e. when the pin is not connected to GND (VDD respectively). In order to override

the internal pull-up (pull-down), the pin has to be connected to VDD (GND respectively).

30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 4

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