MK2771-16R IDT, Integrated Device Technology Inc, MK2771-16R Datasheet

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MK2771-16R

Manufacturer Part Number
MK2771-16R
Description
IC CLK SRC VCXO/SET-TOP 28-QSOP
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock Synthesizer, VCXOr
Datasheet

Specifications of MK2771-16R

Pll
Yes with Bypass
Input
Crystal
Output
CMOS
Number Of Circuits
1
Ratio - Input:output
2:8
Differential - Input:output
No/No
Frequency - Max
50MHz
Divider/multiplier
Yes/Yes
Voltage - Supply
4.75 V ~ 5.25 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
28-QSOP
Frequency-max
50MHz
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MK2771-16R
Manufacturer:
LATTICE
Quantity:
141
Part Number:
MK2771-16R
Manufacturer:
IDT
Quantity:
20 000
Part Number:
MK2771-16RLFTR
Manufacturer:
IDT
Quantity:
20 000
VCXO AND SET-TOP CLOCK SOURCE
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 3 V input voltage to cause the output clocks to vary by
±100 ppm. Using IDT’s patented VCXO and analog
Phase-Locked Loop (PLL) techniques, the device uses an
inexpensive 13.5 MHz pullable crystal input to produce
multiple output clocks including two selectable processor
clocks, 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 MHz output (and to
each other) with zero ppm error, so any output can be used
as the VCXO output.
Block Diagram
IDT™ VCXO AND SET-TOP CLOCK SOURCE
13.5 MHz
pullable
crystal
Optional crystal capacitors.
PS1, PS0
CS1, CS0
AS2:0
VIN
X1
X2
Controlled
Oscillator
Voltage
Crystal
3
2
2
PLL Clock
Synthesis
PLL
Circuitry
x2
1
Features
VDD5
GND
3
Packaged in 28-pin QSOP
RoHS 5 (green) or RoHS 6 (green and lead free)
compliant package
On-chip patented VCXO with pull range of 200 ppm
VCXO tuning voltage of 0 to 3 V
Processor frequencies 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 27
MHz VCXO)
Uses an inexpensive 13.5 MHz pullable crystal
Full CMOS output swings with 25 mA output drive
capability at TTL levels
Advanced, low-power, sub-micron CMOS process
5 V operating voltage with 3.3 V capable I/O
6
VDDIO
divide
by 2
3
ACLK
13.500 MHz
PCLK
CCLK1
CCLK2
27.000 MHz
MK2771-16
DATASHEET
MK2771-16
REV G 051310

Related parts for MK2771-16R

MK2771-16R Summary of contents

Page 1

... VCXO AND SET-TOP CLOCK SOURCE Description The MK2771- low-cost, low-jitter, high-performance VCXO and clock synthesizer designed for set-top boxes. The on-chip Voltage Controlled Crystal Oscillator accepts input voltage to cause the output clocks to vary by ±100 ppm. Using IDT’s patented VCXO and analog Phase-Locked Loop (PLL) techniques, the device uses an inexpensive 13 ...

Page 2

... M = leave floating or unconnected 2 VCXO AND SYNTHESIZER PS0 PCLK 16.667 AS1 AS0 ACLK 0 0 8.192 0 1 11.2896 1 0 12.288 1 1 5.6448 0 0 18.432 0 1 16.9344 1 0 49.152 1 1 21.576 CS0 CCLK1 CCLK2 0 Low 33.333 1 Low 24.576 0 11.0592 18.432 1 11.0592 3.6864 MK2771-16 REV G 051310 ...

Page 3

... Communications clock select pin 0. Selects CCLK 1 and 2 per table above. Internal pull-up. Input Audio clock select 0. Selects ACLK on pin 14. See table above. Internal pull-up resistor. Input Audio clock select 1. Selects ACLK on pin 14. See table above. Internal pull-up resistor. 3 VCXO AND SYNTHESIZER Pin Description MK2771-16 REV G 051310 ...

Page 4

... VCXO AND SET-TOP CLOCK SOURCE Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the MK2771-16. These ratings, which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. ...

Page 5

... GNDs to this. Connect 0.01µF decoupling caps on pins and 22 directly to the ground plane, as close to the MK2771-16 as possible. A series termination resistor of 33 may 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 ...

Page 6

... MK2771-16RLF MK2771-16RLF MK2771-16RLFTR MK2771-16RLF "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) 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

... MK2771-16 VCXO AND SET-TOP CLOCK SOURCE 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. www.idt.com © 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc ...

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