MK3724GL ICST [Integrated Circuit Systems], MK3724GL Datasheet

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MK3724GL

Manufacturer Part Number
MK3724GL
Description
VCXO PLUS AUDIO CLOCK FOR STB
Manufacturer
ICST [Integrated Circuit Systems]
Datasheet

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MK3724GL
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MDS 3724 C
I n t e gra te d C i r c u i t S y s t e m s
Description
The MK3724 is a low cost, low jitter, high performance
VCXO and PLL clock synthesizer designed to replace
expensive discrete VCXOs and multipliers. The
patented on-chip Voltage Controlled Crystal Oscillator
accepts a 0 to 3.3 V input voltage to cause the output
clocks to vary by ±115 ppm. Using ICS’ analog/digital
Phase-Locked Loop (PLL) techniques, the device uses
an inexpensive 27 MHz pullable crystal input to
produce a reference output and a selectable audio
clock.
ICS manufactures the largest variety of VCXO based
timing devices for all applications. 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 connected to VIN. Because
VIN is a high impedance input, it can be driven directly
from an PWM RC integrator circuit.
Block Diagram
Pullable
27 MHz
Crystal
S2:S0
VIN
525 Race Stre et, San Jo se, CA 9 5126
X1
X2
3
Controlled
Oscillator
Voltage
Crystal
VCXO
1
GND
VDD
3
3
Features
PLL/Clock
Synthesis
Circuitry
Packaged in 16-pin TSSOP
Available in Pb free packaging
Replaces a VCXO and oscillator
Operating voltage of 3.3 V
Provides output of 27 MHz plus audio clock
Uses an inexpensive 27 MHz pullable crystal
On-chip patented VCXO with pull range of 230 ppm
(minimum)
VCXO tuning voltage of 0 to 3.3 V
Advanced, low power, sub-micron CMOS process
Industrial temperature range available
For other standard audio frequencies see the
MK3722
PLUS AUDIO CLOCK FOR
PDTS
te l (40 8) 2 97-12 01
ACLK
27MHz
MK3724
w w w. i c st . c o m
Revision 121904
STB

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MK3724GL Summary of contents

Page 1

Description The MK3724 is a low cost, low jitter, high performance VCXO and PLL clock synthesizer designed to replace expensive discrete VCXOs and multipliers. The patented on-chip Voltage Controlled Crystal Oscillator accepts 3.3 V input voltage to ...

Page 2

Pin Assignment VDD 3 VDD 4 VIN 5 GND 6 GND 7 PDTS 8 16-pin TSSOP Pin Descriptions Pin Pin Number Name VDD 4 VDD 5 VIN 6 GND 7 GND ...

Page 3

Pin Pin Number Name 14 VDD MDS 3724 grated Circuit Systems 525 Ra ce Street, San Jose, CA 9512 6 ● VCXO Pin Pin Description Type Power Connect to +3 ...

Page 4

External Component Selection The MK3724 requires a minimum number of external components for proper operation. Decoupling Capacitors Decoupling capacitors of 0.01 µF should be connected between VDD and GND on pins 3 and 4, pins 6 and 7, and pins ...

Page 5

External Capacitor = 2 x (centering error)/(trim sensitivity) Trim sensitivity is a parameter which can be supplied by your crystal vendor. If you do not know the value, Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent ...

Page 6

Parameter Input High Voltage (S1:S0) Input High Voltage (S2) Input Low Voltage (S1:S0) Input Low Voltage (S2) Input High Current Input Low Current Operating Supply Current Short Circuit Current VIN, VCXO Control Voltage On Chip Pull-up Resistor, inputs Input Capacitance ...

Page 7

... Thermal Characteristics Parameter Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case Marking Diagram 16 MK3724G ###### YYWW 1 Non Lead-Free 16 MK3724GL ###### YYWW 1 Lead-Free 16 MK3724IL ###### YYWW 1 Industrial Temp., Lead-Free MDS 3724 grated Circuit Systems 525 Ra ce Street, San Jose, CA 9512 6 ● Symbol Conditions θ ...

Page 8

... MK3724G MK3724GTR MK3724G MK3724GLF MK3724GL MK3724GLFTR MK3724GL MK3724GILF MK3724IL MK3724GILFTR MK3724IL 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 ...

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