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PDF MK3722G Data sheet ( Hoja de datos )
| Número de pieza | MK3722G | |
| Descripción | VCXO PLUS AUDIO CLOCK FOR STB | |
| Fabricantes | Integrated Circuit Solution Inc | |
| Logotipo |  |
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MK3722
VCXO PLUS AUDIO CLOCK FOR STB
Description
The MK3722 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.
Features
• Packaged in 16 pin TSSOP
• Replaces a VCXO and oscillator
• Operating voltage of 3.3V
• 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
Block Diagram
S2:S0
VIN
3
27 MHz
Pullable
Crystal
X1
X2
VDD
3
PLL/Clock
Synthesis
Circuitry
Voltage
Controlled
Crystal
Oscillator
3
GND
PDTS
ACLK
27MHz
MDS 3722 B
1
Revision 092502
Integrated Circuit Systems q 525 Race Street, San Jose, CA 95126 q tel (408) 295-9800 q www.icst.com
1 page  
MK3722
VCXO PLUS AUDIO CLOCK FOR STB
Parameter
Operating Supply Current
Short Circuit Current
VIN, VCXO Control Voltage
On Chip Pull-up Resistor,
inputs
Input Capacitance
Nominal Output Impedance
Symbol Conditions
IDD No load, 2
outputs
IOS
VIA
RPU
S0, S1, S2
CIN
ZOUT
S0, S1, S2
Min.
0
Typ.
11
±50
150
5
20
Max. Units
mA
mA
3.3 V
kΩ
pF
Ω
AC Electrical Characteristics
VDD = 3.3V ±5%, Ambient Temperature 0 to +70° C, unless stated otherwise
Parameter
Symbol
Conditions
Min. Typ. Max. Units
Crystal Pullability
VCXO Gain
fP 0V< VIN < 3.3V, Note 1
+ 100
VIN = VDD/2 + 1V, Note 1
80
ppm
ppm/V
Output Rise Time
Output Fall Time
Output Clock Duty Cycle
Maximum Output Jitter,
short term
tOR 0.8 to 2.0V, CL=15pF
0.75 1.5 ns
tOF 2.0 to 0.8V, CL=15pF
0.75 1.5 ns
tD Measured at 1.65V, CL=15pF 40 50 60 %
tJ CL=15pF
+150
ps
Note 1: External crystal device must conform with Pullable Crystal Specifications listed on page 3.
Thermal Characteristics
Parameter
Symbol Conditions
Thermal Resistance Junction to
Ambient
θJA Still air
θJA 1 m/s air flow
θJA 3 m/s air flow
Thermal Resistance Junction to Case θJC
Min.
Typ.
78
70
68
37
Max.
Units
°C/W
°C/W
°C/W
°C/W
MDS 3722 B
5
Revision 092502
Integrated Circuit Systems q 525 Race Street, San Jose, CA 95126 q tel (408) 295-9800 q www.icst.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet MK3722G.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MK3722 | VCXO PLUS AUDIO CLOCK FOR STB | Integrated Circuit Solution Inc |
| MK3722 | VCXO PLUS AUDIO CLOCK |  IDT |
| MK3722G | VCXO PLUS AUDIO CLOCK FOR STB | Integrated Circuit Solution Inc |
| MK3722GL | VCXO PLUS AUDIO CLOCK | IDT |
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