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MK2771-16 데이터시트 PDF




Integrated Circuit Systems에서 제조한 전자 부품 MK2771-16은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 MK2771-16 자료 제공

부품번호 MK2771-16 기능
기능 VCXO and Set-Top Clock Source
제조업체 Integrated Circuit Systems
로고 Integrated Circuit Systems 로고


MK2771-16 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




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MK2771-16 데이터시트, 핀배열, 회로
I CR O C LOC K
Description
The MK2771-16 is a low cost, low jitter, high
performance VCXO and clock synthesizer
designed for set-top boxes. The on-chip Voltage
Controlled Crystal Oscillator accepts a 0 to 3V
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
13.5 MHz crystal input to produce multiple
output clocks including a selectable processor
clock, a selectable audio clock, two
communications clocks, a 13.5 MHz clock, and
three 27 MHz clocks. All clocks are frequency
locked to the 27.00MHz output (and to each
other) with zero ppm error, so any output can be
used as the VCXO output.
MK2771-16
VCXO and Set-Top Clock Source
Features
• Packaged in 28 pin SSOP (QSOP)
• On-chip patented VCXO with pull range
of 200ppm (minimum)
• VCXO tuning voltage of 0 to 3V
• Processor frequency include 16.66, 20, 25, 32, 40,
and 50 MHz
• Audio clocks support 32 kHz, 44.1 kHz, 48 kHz
and 96 kHz sampling rates
• Zero ppm synthesis error in all clocks (all exactly
track 27MHz VCXO)
• Uses an inexpensive 13.5 MHz crystal
• Full CMOS output swings with 25mA output
drive capability at TTL levels
• Advanced, low power, sub-micron CMOS process
• 5V operating voltage with 3.3V capable I/O
Block Diagram
VDD5 GND VDDIO
AS2:0
PS1, PS0
CS1, CS0
VIN
13.5 MHz X1
pullable
crystal
X2
3
2
2
Voltage
Controlled
Crystal
Oscillator
PLL
Clock
Synthesis
Circuitry
x2
PLL
÷2
Output
Buffer
Output
Buffer
ACLK
PCLK
Output
Buffer
CCLK1
Output
Buffer
CCLK2
Output
Buffers
3
27.000 MHz
Output
Buffer
13.500 MHz
MDS 2771-16 C
1
Revision 102099
Printed 11/16/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA •95126•(408) 295-9800tel• www.icst.com




MK2771-16 pdf, 반도체, 판매, 대치품
I CR O C LOC K
MK2771-16
VCXO and Set-Top Clock Source
External Components
The MK2771-16 requires a minimum number of external components for proper operation. Use a low inductance ground
plane, connect all GNDs to this. Connect 0.01µF decoupling caps on pins 5, 7, 8 and 22 directly to the ground plane, as
close to the MK2771-16 as possible. A series termination resistor of 33may be used for each clock output.The 13.500
MHz crystal must be connected as close to the chip as possible. The crystal should be a parallel mode, pullable, with load
capacitance of 14pF. Consult ICS/MicroClock full specifications. Please obey Application Note MAN05 for pullable
crystal layout info except for the following: the MK2771-16 introduces a GND pin (pin #3) between the pullable crystal
pins. This ground should be brought in straight from the right side underneath the device.
Package Outline and Package Dimensions
(For current dimensional specifications, see JEDEC Publication No. 95.)
EH
D
A1
e
C
B
L
28 pin SSOP
Inches
Millimeters
Symbol Min Max Min Max
A 0.053 0.069 1.35 1.75
A1 0.004 0.010 0.102 0.254
B 0.008 0.012 0.203 0.305
C 0.007 0.010 0.191 0.254
D 0.386 0.394 9.804 10.008
E 0.150 0.157 3.810 3.988
e .025 BSC
0.635 BSC
H 0.228 0.244 5.791 6.198
L 0.016 0.050 0.406 1.270
A
Ordering Information
Part/Order Number
MK2771-16R
MK2771-16RTR
Marking
MK2771-16R
MK2771-16R
Shipping packaging
tubes
tape and reel
Package
Temperature
28 pin SSOP (QSOP) 0-70 °C
28 pin SSOP (QSOP) 0-70 °C
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. 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 2771-16 C
4
Revision 102099
Printed 11/16/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA •95126•(408) 295-9800tel• www.icst.com

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