MK2727 Ver la hoja de datos (PDF) - Integrated Circuit Systems

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MK2727

Low Cost 27 MHz VCXO

Integrated Circuit Systems 

MK2727

Low Cost 27 MHz VCXO

Electrical Specifications

Parameter

Conditions

ABSOLUTE MAXIMUM RATINGS (note 1)

Supply voltage, VDD

Referenced to GND

Inputs and Clock Outputs

Referenced to GND

Ambient Operating Temperature

Soldering Temperature

Max of 10 seconds

Storage temperature

DC CHARACTERISTICS (VDD = 5.0V unless noted)

Operating Voltage, VDD

Output High Voltage, VOH

IOH=-25mA

Output Low Voltage, VOL

IOL=25mA

Output High Voltage, VOH, CMOS level

IOH=-8mA

Operating Supply Current, IDD

No Load

Short Circuit Current

VIN, VCXO control voltage

AC CHARACTERISTICS (VDD = 5.0V unless noted)

Input Crystal Frequency

Input Crystal Accuracy

Output Clock Rise Time

0.8 to 2.0V

Output Clock Fall Time

2.0 to 0.8V

Output Clock Duty Cycle

At 1.4V

Maximum Absolute Jitter, short term

27 MHz output pullability, note 2

0V ≤ VIN ≤ 3V

Minimum Typical Maximum Units

7

V

-0.5

VDD+0.5 V

0

70

°C

260

°C

-65

150

°C

4.75

2.4

VDD-0.4

20

±100

0

5.25

V

V

0.4

V

V

mA

mA

3

V

13.50000

MHz

±30

ppm

1.5

ns

1.5

ns

40

50

60

%

200

ps

±100

ppm

Notes: 1. Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage to the device. Prolonged

exposure to levels above the operating limits but below the Absolute Maximums may affect device reliability.

2. With a MicroClock approved pullable crystal.

External Components

The MK2727 requires a minimum number of external components for proper operation. A decoupling

capacitor of 0.1µF should be connected between VDD and GND on pins 2 and 4, as close to the MK2727

as possible. A series termination resistor of 33Ω may be used for the clock output. The input crystal must be

connected as close to the chip as possible. The input crystal should be a parallel mode, pullable, AT cut,

13.5MHz, with 14pF load capacitance. Consult MicroClock for recommended suppliers. IMPORTANT -

read application note MAN05 before laying out the PCB.

MDS 2727 B

3

Revision 111600

Printed 11/16/00

Integrated Circuit Systems, Inc.•525 Race Street•San Jose•CA•95126•(408)295-9800tel•www.icst.com

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