MK3721D IDT, Integrated Device Technology Inc, MK3721D Datasheet

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MK3721D

Manufacturer Part Number
MK3721D
Description
IC VCXO DTV/SET-TOP 8-SOIC
Manufacturer
IDT, Integrated Device Technology Inc
Type
Voltage Controlled Crystal Oscillator (VCXO)r
Datasheet

Specifications of MK3721D

Package / Case
8-SOIC
Pll
No
Input
Crystal
Output
CMOS
Number Of Circuits
1
Ratio - Input:output
2:1
Differential - Input:output
No/No
Frequency - Max
28MHz
Divider/multiplier
No/No
Voltage - Supply
3.15 V ~ 3.45 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Frequency-max
28MHz
Output Level
CMOS
Frequency Stability
±30
Symmetry Max
60%
Operating Supply Voltage (typ)
3.3
Pin Count
8
Mounting Style
Surface Mount
Screening Level
Commercial
Frequency Tolerance
±20
Product Height (mm)
1.5mm
Product Depth (mm)
3.94mm
Product Length (mm)
4.93mm
Rad Hardened
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MK3721DLFTR
Manufacturer:
MICROCHIP
Quantity:
589
Part Number:
MK3721DLFTR
Manufacturer:
ICS
Quantity:
20 000
LOW COST 16.2 TO 28 MHZ 3.3 VOLT VCXO
IDT™ / ICS™ LOW COST 16.2 TO 28 MHZ 3.3 VOLT VCXO
Description
The MK3721 series of devices includes the original
MK3721S and the new MK3721D. The MK3721D is a
drop-in replacement for the MK3721S device. Compared to
the earlier device, the MK3721D offers a wider operating
frequency range and improved power supply noise
rejection.
The MK3721 is a low cost, low-jitter, high-performance 3.3
volt VCXO designed to replace expensive discrete VCXOs
modules. The on-chip Voltage Controlled Crystal Oscillator
accepts a 0 to 3.3 V input voltage to cause the output
clocks to vary by ±100 ppm. Using ICS’ patented VCXO
techniques, the device uses an inexpensive external
pullable crystal in the range of 16.2 to 28 MHz to produce a
VCXO output clock at that same frequency.
ICS manufactures the largest variety of Set-Top Box and
multimedia clock synthesizers for all applications. If more
clock outputs are needed, see the MK3732 or MK377x
family of parts. Consult ICS to eliminate VCXOs, crystals,
and oscillators from your board.
The frequency of the on-chip VCXO is adjusted by an
external control voltage input into pin VIN. Because VIN is a
high-impedance input, it can be driven directly from an
PWM RC integrator circuit. Frequency output increases
with VIN voltage input. The usable range of VIN is 0 to 3.3
V.
Block Diagram
16.2 to 28 MHz
Pullable
Crystal
VIN
X1
X2
Controlled
Oscillator
Voltage
Crystal
GND
VDD
1
Features
MK3721D is recommended for new designs.
MK3721D is a drop-in replacement for the earlier
MK3721S device
Packaged in 8-pin SOIC
Operational frequency range of 16.2 MHz to 28 MHz
Uses an inexpensive external crystal
On-chip patented VCXO with pull range of 200 ppm
(minimum)
VCXO tuning voltage of 0 to 3.3 V
Operating voltage of 3.3 V
12 mA output drive capability at TTL levels
Advanced, low-power, sub-micron CMOS process
For frequencies between 1 MHz and 8 MHz, use the
MK3713D. For higher than 28 MHz, use the MK3732-05.
Available in a lead-free package
16.2 to 28 MHz Clock
(REFOUT)
MK3721
DATASHEET
MK3721
REV E 103003

Related parts for MK3721D

MK3721D Summary of contents

Page 1

... LOW COST 16 MHZ 3.3 VOLT VCXO Description The MK3721 series of devices includes the original MK3721S and the new MK3721D. The MK3721D is a drop-in replacement for the MK3721S device. Compared to the earlier device, the MK3721D offers a wider operating frequency range and improved power supply noise rejection ...

Page 2

MK3721 LOW COST 16 MHZ 3.3 VOLT VCXO Pin Assignment ...

Page 3

MK3721 LOW COST 16 MHZ 3.3 VOLT VCXO External Component Selection The MK3721 requires a minimum number of external components for proper operation. Decoupling Capacitors A decoupling capacitor of 0.01µF should be connected between VDD and GND on ...

Page 4

MK3721 LOW COST 16 MHZ 3.3 VOLT VCXO Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the MK3721. These ratings, which are standard values for ICS commercially rated parts, are stress ratings ...

Page 5

... Parameter Output Frequency MK3721D MK3721S Crystal Pullability MK3721D MK3721S VCXO Gain MK3721D MK3721S Output Rise Time Output Fall Time Output Clock Duty Cycle Maximum Output Jitter, short term Note 1: External crystal device must conform with Pullable Crystal Specifications listed on page 3. IDT™ / ICS™ LOW COST 16 MHZ 3.3 VOLT VCXO ...

Page 6

... MK3721STR MK3721S Note 1: MK3721D is recommended for new designs. While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (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 ...

Page 7

MK3721 LOW COST 16 MHZ 3.3 VOLT VCXO Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA ...

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