參數(shù)資料
型號: M2006-03-491.5200
元件分類: 時(shí)鐘產(chǎn)生/分配
英文描述: 491.52 MHz, OTHER CLOCK GENERATOR, QCC36
封裝: 9 X 9 MM, SMT-36
文件頁數(shù): 1/6頁
文件大?。?/td> 311K
代理商: M2006-03-491.5200
M2006-03 Datasheet Rev 1.3
Revised 14Jul2004
Integr a t ed Cir cui t S ystems , Inc . N e tw or kin g & C o mm un icat ion s ● www. icst.com ● te l (5 08 ) 85 2-5 4 0 0
M2006-03
CMTS DIRECT CONVERSION (ZERO IF) CLOCK SOURCE
Product Data Sheet
GENERAL DESCRIPTION
The M2006-03 is a VCSO (Voltage Controlled SAW
Oscillator) based clock generator
PLL designed for frequency
translation and jitter attenuation of
a master reference clock in a cable
modem termination system (CMTS).
External loop filter components allow
tailoring of the PLL loop response.
The M2006-03 includes a phase-slope limiting feature
to prevent disruptive output clock phase changes upon
input reference reselection.
FEATURES
◆ Integrated SAW (surface acoustic wave) delay line
◆ VCSO center frequency of 491.52MHz
◆ Jitter 9ps rms, typical, over 100Hz to 12kHz
Jitter 3ps rms, typical, over 12kHz to 1GHz
◆ PLL phase slope limiter circuit
◆ Single-ended reference inputs support LVCMOS, LVTTL
◆ All output clocks are differential LVPECL compatible
◆ Two downstream clocks, frequency-selectable
◆ One upstream clock, frequency-selectable
◆ REF_OUT always provides a 10.24MHz reference clock
◆ All output rising edges aligned to within 1nsec of
selected input reference rising edge (unless M2_SEL= 1)
◆ Output duty cycle 47-53% worse case
◆ Single 3.3V power supply
◆ Small 9 x 9 mm SMT (surface mount) package
PIN ASSIGNMENT (9 x 9 mm SMT)
Figure 1: Pin Assignment
SIMPLIFIED BLOCK DIAGRAM
Selectable Frequencies (MHz) for M2006-03-491.5200
Input Ref. Clock: 2.048, 4.096, 10.24, or 20.48 MHz
VCSO Frequency: 491.52 MHz
Downstream Clock: 245.76 or 491.52 MHz
Upstream Clock: 40.96, 81.92, 163.84, or 491.52 MHz
Output Ref. Clock: 10.24 MHz
OP_OU
nOP_OU
M2006-03-491.52
M2_SEL
M1_SEL DS_CLK_SEL
US_CLK_SEL1:0
External Loop Filter
M2006-03 CMTS Direct Conversion (Zero IF) Clock Source
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