• Available in commercial and industrial temperature
versions
VDDIO
Description
The MK2732-06 is a low cost, low jitter, high
performance VCXO and PLL clock synthesizer
designed to replace expensive discrete VCXOs
and multipliers. The on-chip Voltage Controlled
Crystal Oscillator (VCXO) accepts a 0 to 3 V
input voltage to cause the output clocks to vary by
±100 ppm. Using ICS/MicroClock’s patented
VCXO and analog Phase-Locked Loop (PLL)
techniques, the device uses an inexpensive 10 MHz
to 14 MHz pullable crystal input to produce up to
three output clocks.
ICS manufactures the largest variety of clocks for
Set-top boxes and Communications. Consult ICS
to eliminate VCXOs, crystals, oscillators and
buffers from your board.
Block Diagram
VDD5
2
S1, S0
VIN
10-14 MHz
X1
pullable
crystal
X2
PLL/Clock
Synthesis
Circuitry
Voltage
Controlled
Crystal
Oscillator
Output
Buffer
CLK1
Output
Buffer
Output
Buffer
CLK2
REFCLK
OE (all outputs)
1
Revision 120600
Printed 12/21/00
Integrated Circuit Systems • 525 Race Street • San Jose • CA •95126 •(408) 295-9800tel•www.icst.com
MDS 2732-06 C
PRELIMINARY INFORMATION
MK2732-06
Low Phase Noise VCXO+Multiplier
Clock Select Table
Pin Assignment
MK2732-06
X1
VDD5
VDD5
VIN
GND
GND
S1
OE
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
X2
REFCLK
NC
GND
CLK2
VDDIO
S0
CLK1
S1
0
0
0
M
M
M
1
1
1
S0
0
M
1
0
M
1
0
M
1
Input
13.248
13.248
13.248
13.248
13.5
13.5
13.5
Test mode
13.5
CLK1
52.992
13.248
13.248
52.992
54
54
27
-
27
CLK2
35.328
35.328
35.328
35.328
27
27
54
-
27
Refclk
off
off
on
on
off
on
on
-
on
16 pin (173 mil) TSSOP
Pin Descriptions
Number
1
2, 3
4
5, 6, 13
7
8
9
10
11
12
14
15
16
Name
X1
VDD5
VIN
GND
S1
OE
CLK1
S0
VDDIO
CLK2
NC
REFCLK
X2
Type
XI
P
VI
P
TI
I
O
TI
P
O
-
O
XO
0=connect directly to GND
M=leave unconnected (floating)
1=connect directly to VDDIO
off=output stopped low.
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 #1. 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.
Nothing is connected internally to this pin.
Buffered crystal VCXO clock
Crystal connection. Connect to a pullable crystal of 10-14 MHz.
Key: I = Input; TI = tri-level input; O = output; P = power supply connection; VI = analog voltage input;
XI, XO = crystal pins.
External Components
The MK2732-06 requires a minimum number of external components for proper operation. Decoupling
capacitors of 0.01µF 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 MK2732-06 as possible. A series termination resistor of 33
Ω
may
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.
MDS 2732-06 C
2
Revision 120600
Printed 12/21/00
Integrated Circuit Systems • 525 Race Street • San Jose • CA •95126 •(408) 295-9800tel•www.icst.com
PRELIMINARY INFORMATION
MK2732-06
Low Phase Noise VCXO+Multiplier
Minimum
Typical
Maximum
7
VDD+0.5
70
85
260
150
5.0
3.3
2.5
2.5
5.25
5.25
1.5
0.8
VDD-0.5
0.5
2.4
0.4
VDD-0.4
23
5.8
±100
7
0
10
0
3
14
1.5
1.5
60
±150
-115
±100
Units
V
V
C
C
C
C
V
V
V
V
V
V
V
V
V
V
V
mA
mA
mA
pF
ppm
V
MHz
ns
ns
%
ps
dBc/Hz
ppm
Electrical Specifications
Parameter
Supply voltage, VDD
Inputs and Clock Outputs
Ambient Operating Temperature
Ambient Operating Temperature, MK2732-06GI
Conditions
Referenced to GND
Referenced to GND
Industrial Temperature
Max of 10 seconds
ABSOLUTE MAXIMUM RATINGS (note 1)
-0.5
0
-40
-65
4.75
3.13
3.5
OE
OE
S1, S0
S1, S0
IOH=-25mA
IOL=25mA
IOH=-8mA
No Load
No Load
Each output
S1, S0, OE
All clocks
2
Soldering Temperature
Storage temperature
Core Operating Voltage, VDD5
I/O Operating Voltage, VDDIO
Input High Voltage, VIH, X1 pin only
Input Low Voltage, VIL, X1 pin only
Input High Voltage, VIH, binary input
Input Low Voltage, VIL, binary input
Input High Voltage, VIH, trinary inputs
Input Low Voltage, VIL, trinary inputs
Output High Voltage, VOH
Output Low Voltage, VOL
Output High Voltage, VOH, CMOS level
Operating Supply Current, IDD
Operating Supply Current, IDDIO
Short Circuit Current
Input Capacitance
Frequency synthesis error
VIN, VCXO control voltage
Input Crystal Frequency
Output Clock Rise Time
Output Clock Fall Time
Output Clock Duty Cycle
Maximum Absolute Jitter, short term
Phase Noise, relative to carrier
Output pullability, note 2
Notes:
DC CHARACTERISTICS (VDD5 = 5.0V, VDD3.3 = 3.3V unless noted)
AC CHARACTERISTICS (VDD5 = 5.0V, VDD3.3 = 3.3V unless noted)
0.8 to 2.0V
2.0 to 0.8V
At VDDIO/2
10 kHz offset
0V
≤
VIN
≤
3V
40
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 an ICS/MicroClock approved pullable crystal.
MDS 2732-06 C
3
Revision 120600
Printed 12/21/00
Integrated Circuit Systems • 525 Race Street • San Jose • CA •95126 •(408) 295-9800tel•www.icst.com
PRELIMINARY INFORMATION
MK2732-06
Low Phase Noise VCXO+Multiplier
16 pin TSSOP
Millimeters
Min
Max
-
1.10
0.19
0.30
0.09
0.20
4.90
5.10
4.30
4.50
6.40 BSC
0.65 BSC
0.50
0.70
0.05
0.15
Package Outline and Package Dimensions
E
H
D
Q
e
c
b
h x 45°
A
L
Symbol
A
b
c
D
E
H
e
L
Q
Ordering Information
Part/Order Number
MK2732-06G
MK2732-06GTR
MK2732-06GI
MK2732-06GITR
Revision history:
Version Revision
A
031199
B
040699
C
120600
Comments
Original
Corrected typo on package width from 73 to 173 mil. Added IDDIO, IDD, jitter. Changed 1M selection
to Test Mode. Changed aspect ratio of pinout package. Changed features to show xDSL and MPEG.
Added Industrial Temperature version of device (MK2732-06GI and MK2732-06GITR)
Marking
Shipping packaging
ICS (top line)
tubes
MK27326 (2nd line)
tape and reel
ICS (top line)
tubes
MK27326I (2nd line)
tape and reel
16 pin TSSOP
16 pin TSSOP
16 pin TSSOP
16 pin TSSOP
Temperature
0 to 70 °C
0 to 70 °C
-40 to -85 °C
-40 to -85 °C
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (ICS) assumes no responsibility for either its
use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is
intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary
environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does
not authorize or warrant any ICS product for use in life support devices or critical medical instruments.
MDS 2732-06 C
4
Revision 120600
Printed 12/21/00
Integrated Circuit Systems • 525 Race Street • San Jose • CA •95126 •(408) 295-9800tel•www.icst.com
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