MK2732-05S [ICSI]
Low Phase Noise VCXO+Multiplier; 低相位噪声压控+乘法器
| 型号： | MK2732-05S |
| 厂家： | 
INTEGRATED CIRCUIT SOLUTION INC |
| 描述： | Low Phase Noise VCXO+Multiplier |
| 文件： | 总4页 (文件大小：46K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MK2732-05
Low Phase Noise VCXO+Multiplier
Features
Description
The MK2732-05 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 14.318 MHz pullable crystal input to produce
one or two output clocks.
• Packaged in 16 pin narrow SOIC
• Replaces a VCXO and multiplier
• Uses an inexpensive pullable crystal
• Output clocks up to 85 MHz
• On-chip patented VCXO with pull range of
200 ppm (±100 ppm) minimum
• VCXO tuning voltage of 0 to 3 V
• Zero ppm synthesis error in both clocks
• 25 mA output drive capability at TTL levels
• Advanced, low power, sub-micron CMOS process
• 5 V operating voltage for core, ability to run
output clocks at 3.3V or 5V
ICS manufactures the largest variety of Set-Top
Box and multimedia clock synthesizers for all
applications. Consult ICS to eliminate VCXOs,
crystals and oscillators from your board.
Block Diagram
VDD5
VDDIO
3
S2:S0
Output
Buffer
VIN
CLK1
CLK2
PLL/Clock
Synthesis
Circuitry
10-14 MHz X1
pullable
crystal
Voltage
Controlled
Crystal
Output
Buffer
Oscillator
X2
OE
MDS 2732-05 D
1
Revision 122799
Printed 11/16/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA •95126•(408) 295-9800 tel• www.icst.com
MK2732-05
Low Phase Noise VCXO+Multiplier
Pin Assignment
Clock Select Table
S2 S1
S0
0
CLK1
REF/4
OFF
OFF
OFF
OFF
OFF
Test
CLK2
REF/2
x0.666
x2.6666
x4
MK2732-05
0
0
0
0
0
0
1
1
1
1
1
1
0
0
0
1
1
1
0
0
0
1
1
1
16 X2
15 NC
14 S1
X1
1
2
3
4
5
6
7
8
M
1
VDD5
0
VDD5
VIN
M
1
x1.5
x1.3333
Test
x4
GND
13
12 CLK2
GND
GND
S2
0
11 VDDIO
M
1
OFF
OFF
OFF
OFF
OFF
x2
S0
10
9
0
x3
OE
CLK1
M
1
x5
16 pin narrow (150 mil) SOIC
x6
0=connect directly to GND, 1=connect directly to
VDDIO, OFF=output stopped low.
Pin Descriptions
Number
Name
X1
Type Description
1
2, 3
4
XI
P
Crystal connection. Connect to a pullable crystal of 10-14.318 MHz.
Core VDD. Connect to +5V.
VDD5
VIN
GND
S2
VI
P
Voltage Input to VCXO. Zero to 3V signal which controls the frequency of the VCXO.
Connect to ground.
5, 6, 13
7
I
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.
8
OE
I
9
CLK1
S0
O
TI
P
10
11
12
14
15
16
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.
VDDIO
CLK2
S1
O
I
Select input #1. Selects outputs per table above. Do not exceed VDDIO.
Nothing is connected internally to this pin.
NC
-
X2
XO
Crystal connection. Connect to a pullable crystal of 10-14.318 MHz.
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.
External Components
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 Wmay
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 2732-05 D
2
Revision 122799
Printed 11/16/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA •95126•(408) 295-9800 tel• www.icst.com
MK2732-05
Low Phase Noise VCXO+Multiplier
Electrical Specifications
Parameter
Conditions
Minimum
Typical
Maximum Units
ABSOLUTE MAXIMUM RATINGS (note 1)
Supply voltage, VDD
Referenced to GND
7
VDD+0.5
70
V
V
Inputs and Clock Outputs
Ambient Operating Temperature
Soldering Temperature
Storage temperature
Referenced to GND
Max of 10 seconds
-0.5
0
°C
°C
°C
260
-65
150
DC CHARACTERISTICS (VDD5 = 5.0V unless noted)
Core Operating Voltage, VDD5
4.75
3.15
3.5
5.0
3.3
2.5
2.5
5.25
V
V
I/O Operating Voltage, VDDIO
VDD5
Input High Voltage, VIH, X1 pin only
Input Low Voltage, VIL, X1 pin only
V
1.5
0.8
0.5
0.4
V
Input High Voltage, VIH, binary inputs
Input Low Voltage, VIL, binary inputs
Input High Voltage, VIH, trinary input
Input Low Voltage, VIL, trinary input
Output High Voltage, VOH
S2, S1, OE
S2, S1, OE
S0, pin 10
2
V
V
VDDIO-0.5
2.4
V
S0, pin 10
V
IOH=-25mA
IOL=25mA
IOH=-8mA
No Load
V
Output Low Voltage, VOL
V
Output High Voltage, VOH, CMOS level
Operating Supply Current, IDD
Short Circuit Current
VDDIO-0.4
V
19
±100
7
mA
mA
pF
ppm
V
Each output
S2:S0, OE
Both clocks
Input Capacitance
Frequency synthesis error
0
3
VIN, VCXO control voltage
0
AC CHARACTERISTICS (VDD5 = 5.0V unless noted)
Input Crystal Frequency
10
14.31818
85.9
1.5
MH z
MH z
ns
Output Clock Frequency
2.5
Output Clock Rise Time
Output Clock Fall Time
Output Clock Duty Cycle
Maximum Absolute Jitter
Phase Noise, relative to carrier
Output pullability, note 2
0.8 to 2.0V
2.0 to 0.8V
At VDDIO/2
1.5
ns
40
60
%
±100
-115
ps
10 kHz offset
dBc/Hz
ppm
0V £ VIN £ 3V
±100
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 an ICS/MicroClock approved pullable crystal.
Pullable Crystal Specifications:
Correlation (load) Capacitance
CO/C1
14 pF
240 max
35 W max
0 to 70 °C
±20 ppm
±50 ppm
ESR
Operating Temperature
Initial Accuracey
Temperature plus Aging Stability
MDS 2732-05 D
3
Revision 122799
Printed 11/16/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA •95126•(408) 295-9800 tel• www.icst.com
MK2732-05
Low Phase Noise VCXO+Multiplier
Package Outline and Package Dimensions
(For current dimensional specifications, see JEDEC Publication No. 95.)
16 pin SOIC narrow
Inches
Millimeters
Symbol
A
Min
Max
Min
1.35
0.10
0.33
1.91
9.80
3.80
1.27 BSC
5.80
0.25
0.41
Max
0.0532 0.0688
0.0040 0.0098
0.0130 0.0200
1.75
0.24
0.51
2.40
10.00
4.00
E
H
A1
B
C
0.075
0.098
D
E
e
0.3859 0.3937
0.1497 0.1574
.050 BSC
H
h
0.2284 0.2440
0.0099 0.0195
0.0160 0.0500
6.20
0.50
1.27
h x 45°
D
L
A
C
A1
B
e
L
Ordering Information
Part/Order Number
MK2732-05S
Marking
Shipping packaging
tubes
Package
Temperature
0-70 °C
MK2732-05S
MK2732-05S
16 pin SOIC
16 pin SOIC
MK2732-05STR
tape and reel
0-70 °C
Revision history:
Version Revision
Comments
Original
A
B
10308
12078
CLK1 and CLK2 functions switched in 000 address, changed from x0.75 to x0.666 in 00M address,
changed name of VDD3.3 to VDDIO.
C
D
4289
Added jitter spec, changed VDD on VIH and VOH to VDDIO, lowered IDD. Added L dimension,
changed address. Eliminated “Preliminary”.
Changed to JEDEC dimensions. Changed VDD to ±5%. Added Pullable Crystal Specifications.
12279
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 2732-05 D
4
Revision 122799
Printed 11/16/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA •95126•(408) 295-9800 tel• www.icst.com
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