ICS840008AR-01 Просмотр технического описания (PDF) - Integrated Circuit Systems

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ICS840008AR-01

FEMTOCLOCKS™ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER

Integrated Circuit Systems 

Integrated

Circuit

Systems, Inc.

PRELIMINARY

ICS840008-01

FEMTOCLOCKS™ CRYSTAL-TO-LVCMOS/LVTTL

FREQUENCY SYNTHESIZER

TABLE

5D.

AC

CHARACTERISTICS,

V

DD

=

V

DDA

=

V

DDO

=

2.5V±5%,

TA

=

0°C

TO

70°C

Symbol Parameter

Test Conditions

Minimum Typical

fOUT

tsk(o)

tjit(Ø)

Output Frequency

Output Skew; NOTE 1, 3

RMS Phase Jitter (Random);

NOTE 2

Integration Range:

1.875MHz - 20MHz

125

TBD

0.53

tL

PLL Lock Time

TBD

tR / tF

Output Rise/Fall Time

20% to 80%

600

odc

Output Duty Cycle

50

NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.

Measured at VDDO/2.

NOTE 2: Please refer to the Phase Noise Plot which will follow the AC Characteristics Tables.

NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.

Maximum

160

Units

MHz

ps

ps

ms

ps

%

TABLE 5E. AC CHARACTERISTICS, VDD = VDDA = 2.5V±5%, VDDO = 1.8V±5%, TA = 0°C TO 70°C

Symbol Parameter

Test Conditions

Minimum Typical

fOUT

tsk(o)

Output Frequency

Output Skew; NOTE 1, 3

125

TBD

tjit(Ø)

RMS Phase Jitter (Random);

NOTE 2

Integration Range:

1.875MHz - 20MHz

0.49

tL

PLL Lock Time

TBD

tR / tF

Output Rise/Fall Time

20% to 80%

630

odc

Output Duty Cycle

50

NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.

Measured at VDDO/2.

NOTE 2: Please refer to the Phase Noise Plot which will follow the AC Characteristics Tables.

NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.

Maximum

160

Units

MHz

ps

ps

ms

ps

%

840001AR-01

www.icst.com/products/hiperclocks.html

6

REV. A APRIL 7, 2005

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