EEWORLDEEWORLDEEWORLD

Part Number

Search

849N202CKI-008LFT

Description
Clock Synthesizer / Jitter Cleaner JITTER ATTENUATOR
Categorysemiconductor    Analog mixed-signal IC   
File Size1MB,40 Pages
ManufacturerIDT (Integrated Device Technology)
Environmental Compliance
Download Datasheet Parametric View All

849N202CKI-008LFT Online Shopping

Suppliers Part Number Price MOQ In stock  
849N202CKI-008LFT - - View Buy Now

849N202CKI-008LFT Overview

Clock Synthesizer / Jitter Cleaner JITTER ATTENUATOR

849N202CKI-008LFT Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerIDT (Integrated Device Technology)
Product CategoryClock Synthesizer / Jitter Cleaner
RoHSDetails
PackagingReel
Factory Pack Quantity5000
FemtoClock
®
NG Universal Frequency
Translator
849N202
Datasheet
General Description
The 849N202 is a highly flexible FemtoClock® NG general purpose,
low phase noise Universal Frequency Translator / Synthesizer with
alarm and monitoring functions suitable for networking and
communications applications. It is able to generate any output
frequency in the 0.98MHz - 312.5MHz range and most output
frequencies in the 312.5MHz - 1,300MHz range (see Table 3 for
details). A wide range of input reference clocks and a range of
low-cost fundamental mode crystal frequencies may be used as the
source for the output frequency.
The 849N202 has three operating modes to support a very broad
spectrum of applications:
1) Frequency Synthesizer
Features
4
TH
generation FemtoClock® NG technology
Universal Frequency Translator (UFT) / Frequency Synthesizer
Two outputs, individually programmable as LVPECL or LVDS
Both outputs may be set to use 2.5V or 3.3V output levels
Programmable output frequency: 0.98MHz up to 1,300MHz
Zero ppm frequency translation
Two differential inputs support the following input types:
LVPECL, LVDS, LVHSTL, HCSL
Input frequency range: 8kHz - 710MHz
Crystal input frequency range: 16MHz - 40MHz
Two factory-set register configurations for power-up default state
Synthesizes output frequencies from a 16MHz - 40MHz
fundamental mode crystal.
Fractional feedback division is used, so there are no
requirements for any specific crystal frequency to produce the
desired output frequency with a high degree of accuracy.
Applications: PCI Express, Computing, General Purpose
Translates any input clock in the 16MHz - 710MHz frequency
range into any supported output frequency.
This mode has a high PLL loop bandwidth in order to track input
reference changes, such as Spread-Spectrum Clock
modulation, so it will not attenuate much jitter on the input
reference.
Applications: Networking & Communications.
Translates any input clock in the 8kHz -710MHz frequency
range into any supported output frequency.
This mode supports PLL loop bandwidths in the 10Hz - 580Hz
range and makes use of an external crystal to provide
significant jitter attenuation.
2) High-Bandwidth Frequency Translator
Power-up default configuration pin or register selectable
Configurations customized via One-Time Programmable ROM
Settings may be overwritten after power-up via I
2
C
I
2
C Serial interface for register programming
RMS phase jitter at 125MHz, using a 40MHz crystal
(12kHz - 20MHz): 510fs (typical), Low Bandwidth Mode (FracN)
RMS phase jitter at 400MHz, using a 40MHz crystal
(12kHz - 40MHz): 321fs (typical), Synthesizer Mode (Integer FB)
Output supply voltage modes:
V
CC
/V
CCA
/V
CCO
3.3V/3.3V/3.3V
3.3V/3.3V/2.5V (LVPECL only)
2.5V/2.5V/2.5V
-40°C to 85°C ambient operating temperature
Available in lead-free (RoHS 6) package
3) Low-Bandwidth Frequency Translator
This device provides two factory-programmed default power-up
configurations burned into One-Time Programmable (OTP) memory.
The configuration to be used is selected by the CONFIG pin. The two
configurations are specified by the customer and are programmed by
IDT during the final test phase from an on-hand stock of blank
devices. The two configurations may be completely independent of
one another.
One usage example might be to install the device on a line card with
two optional daughter cards: an OC-12 option requiring a 622.08MHz
LVDS clock translated from a 19.44MHz input and a Gigabit Ethernet
option requiring a 125MHz LVPECL clock translated from the same
19.44MHz input reference.
To implement other configurations, these power-up default settings
can be overwritten after power-up using the I
2
C interface and the
device can be completely reconfigured. However, these settings
would have to be re-written next time the device powers-up.
XTALBAD
CLK1BAD
V
CCA
XTAL_IN
XTAL_OUT
V
CC
CLK_SEL
CLK0
nCLK0
V
CC
V
EE
CLK1
nCLK1
1
2
3
4
5
6
7
8
9
10
40 39 38 37 36 35 34 33 32 31
30
29
nc
CLK_ACTIVE
HOLDOVER
Pin Assignment
CLK0BAD
LF1
LF0
V
EE
LOCK_IND
V
CC
OE0
Q0
nQ0
V
CCO
Q1
nQ1
OE1
V
EE
849N202
40 Lead VFQFN
6mm x 6mm x 0.925mm
K Package
Top View
28
27
26
25
24
23
22
21
11 12 13 14 15 16 17 18 19 20
CONFIG
S_A1
S_A0
nc
PLL_BYPASS
SDATA
V
CC
nc
SCLK
nc
©2016 Integrated Device Technology, Inc..
1
Revision B, May 20, 2016
51 single chip microcomputer
[i=s]This post was last edited by paulhyde on 2014-9-15 09:40[/i] I found it here to share, let's make progress together...
yuchun_yu_love@ Electronics Design Contest
stm32 uses sql database function at the bottom layer
Historically, SQL databases were patented by the backend, and it was a fantasy for the underlying microcontroller to use SQL databases. Often, the underlying layer needs to store data for a period of ...
a457083523 stm32/stm8
ad7323 12-bit AD conversion chip
AD7323, when designing the circuit, VDD is connected to +5V and VSS is connected to -15V. Is it okay to collect +-5V signals in this way?...
wolf1116 ADI Reference Circuit
Why can't the msp430G2 development board connect to the computer?
Why can't the msp430G2 development board connect to the computer? ? It shows that the USB cannot be found when programming now! The power light on it is normal! !...
穿越火线大月 Microcontroller MCU
Very practical thermometer and digital voltmeter 12864 to display
[i=s]This post was last edited by paulhyde on 2014-9-15 03:30[/i] The programs are all carefully debugged by me, and they are very useful! Friends who are interested can download them and have a look....
wangxu0624 Electronics Design Contest
I am a student, and my teacher asked me to choose a small direction to study.
My major is hardware. My teacher asked me to choose a minor direction. He suggested the Internet of Things direction for me to consider. Do you have any good suggestions?...
xiangbinlvcha 51mcu

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1055  1486  96  478  1919  22  30  2  10  39 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号