MK2732-05S Integrated Circuit Systems, MK2732-05S Datasheet - Page 2

• Manufacturer Part Number: MK2732-05S
• Description: Low Phase Noise VCXO+Multiplier
• Manufacturer: Integrated Circuit Systems

MDS 2732-05 D
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA •95126•[phone] tel• www.icst.com
The MK2732-05 requires a minimum number of external components for proper operation. Decoupling
capacitors of 0.1µF should be connected between VDD5 and GND on pins 3 and 5, and VDDIO and
GND on pins 11 and 13, as close to the MK2732-05 as possible. A series termination resistor of 33
be used for each clock output. The input crystal must be connected as close to the chip as possible. The
input crystal should be a fundamental mode, parallel resonant, pullable, AT cut. A crystal with 14 pF load
capacitance is recommended. Consult ICS/MicroClock for recommended suppliers. IMPORTANT -
consult the application note MAN05 for layout guidelines.
Pin Assignment
External Components
Pin Descriptions
Key: I = Input with internal pull-up resistor; TI = tri-level input; O = output; P = power supply connection;
VI = analog voltage input; XI, XO = crystal pins.
Number
5, 6, 13
2, 3
10
11
12
14
15
16
1
4
7
8
9
16 pin narrow (150 mil) SOIC
VDD5
VDD5
GND
GND
VIN
OE
X1
S2
VDDIO
MK2732-05
VDD5
Name
CLK1
CLK2
GND
VIN
NC
OE
X1
X2
S2
S0
S1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Type
XO
VI
TI
XI
O
O
P
P
P
I
I
I
-
X2
NC
S1
GND
CLK2
VDDIO
S0
CLK1
Description
Crystal connection. Connect to a pullable crystal of 10-14.318 MHz.
Core VDD. Connect to +5V.
Voltage Input to VCXO. Zero to 3V signal which controls the frequency of the VCXO.
Connect to ground.
Select input #2. Selects outputs per table above. Do not exceed VDDIO.
Output Enable. Tri-states outputs when low. Do not exceed VDDIO.
Clock Output #1 per table above. Amplitude = VDDIO.
Select input #0. Selects outputs per table above. Do not exceed VDDIO.
Input and output VDD. Connect to +3.3V or +5V. Clock amplitude matches this voltage.
Clock Output #2 per table above. Amplitude = VDDIO.
Select input #1. Selects outputs per table above. Do not exceed VDDIO.
Nothing is connected internally to this pin.
Crystal connection. Connect to a pullable crystal of 10-14.318 MHz.
2
Low Phase Noise VCXO+Multiplier
Clock Select Table
0=connect directly to GND, 1=connect directly to
VDDIO, OFF=output stopped low.
S2
0
0
0
0
0
0
1
1
1
1
1
1
S1
0
0
0
1
1
1
0
0
0
1
1
1
S0
M
M
M
M
0
1
0
1
0
1
0
1
Revision 122799
REF/4
CLK1
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Test
x2.6666
x1.3333
MK2732-05
REF/2
x0.666
CLK2
x1.5
Test
x4
x4
x2
x3
x5
x6
Printed 11/16/00
may