MK1709

LOW EMI CLOCK GENERATOR

SSCG

IDT™ LOW EMI CLOCK GENERATOR

6

MK1709

REV M 051310

AC Electrical Characteristics (MK1709S)

Unless stated otherwise, VDD = 3.3 V, Ambient Temperature 0 to +85

° C

AC Electrical Characteristics (MK1709AG)

Unless stated otherwise, VDD = 3.3 V, Ambient Temperature 0 to +85

° C

Spread Spectrum Modulation Rate

For 40 to 50 MHz selections, modulation rate = input frequency/1028; for 50 to 100 MHz selections, modulation rate

= input frequency/2056; for 100 to 165 MHz selections, modulation rate = input frequency/4112.

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Input/Output Clock Frequency

40

167

MHz

Input Clock Duty Cycle

Time above VDD/2

20

80

%

Output Clock Duty Cycle

Time above 1.5 V

40

50

60

%

Output Clock Rise Time

tOR

0.8 to 2.0V

1.5

ns

Output Clock Fall Time

tOF

2.0 to 0.8V

1.5

ns

EMI Peak Frequency Reduction

3rd - 19th odd

harmonics

7 to 14

dB

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Input/Output Clock Frequency

25

165

MHz

Input Clock Duty Cycle

Time above VDD/2

20

80

%

Output Clock Duty Cycle

Time above 1.5 V,

40 MHz - 100 MHz

40

50

55

%

Time above 1.5 V,

100 MHz - 150 MHz

45

%

Time above 1.5 V,

>150 MHz

35

%

Output Clock Rise Time

tOR

0.8 to 2.0V

1.5

ns

Output Clock Fall Time

tOF

2.0 to 0.8V

1.5

ns

EMI Peak Frequency Reduction

3rd - 19th odd

harmonics

7 to 14

dB