MK3723 데이터 시트보기 (PDF) - Integrated Circuit Systems

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MK3723

Low Cost 3.3 Volt VCXO

Integrated Circuit Systems 

PRELIMINARY INFORMATION

MK3723

I CR O C LOC K

Low Cost 3.3 Volt VCXO

Pin Assignment

MK3723

X1 1

VDD 2

8 X2

7 S1

VIN 3

GND 4

6 VCXOCLK

5 S0

8 pin (150 mil) SOIC

Divider Select Table

S1

S0 VCXOCLK (MHz)

0

0

Crystal ÷2

0

1

Crystal ÷4

1

0

Crystal ÷6

1

1

Crystal ÷8

0 = connect directly to ground

1 = connect directly to VDD

Pin Descriptions

Number Name Description

1

X1 Crystal connection. Connect to a pullable 10 to 20 MHz crystal.

2

VDD VDD. Connect to + 3.3 V.

3

VIN Voltage input to VCXO. Zero to 3.3 V analog input which controls the frequency of the VCXO.

4

GND Connect to ground.

5

S0 Select pin for VCXO divider. See table above.

6 VCXOCLK VCXO clock output. Full CMOS output amplitude.

7

S1 Select pin for VCXO divider. See table above.

8

X2 Crystal connection. Connect to a pullable 16 to 28 MHz crystal.

Crystal Specifications

Correlation (load) capacitance

Initial accuracy

Drift over temperature and aging

C0/C1 ratio

ESR

14 pF

±20 ppm maximum

±50 ppm maximum

240 maximum

35 Ω maximum

MDS 3723 A

2

Revision 082800

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

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