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M1010-01 반도체 회로 부품 판매점

VCSO BASED CLOCK JITTER ATTENUATOR



ETC 로고
ETC
M1010-01 데이터시트, 핀배열, 회로
Integrated
Circuit
Systems, Inc.
Preliminary Information
M1010-01
VCSO BASED CLOCK JITTER ATTENUATOR
GENERAL DESCRIPTION
The M1010-01 is a VCSO (Voltage Controlled SAW
Oscillator) based clock jitter
attenuator PLL designed for clock
jitter attenuation and frequency
translation. The device is ideal for
generating the transmit reference
clock for OC-12 and OC-48 optical
network systems supporting 622 -
2,488 MHz rates. It can serve to jitter attenuate a
stratum reference clock or a recovered clock in loop
timing mode. The M1010-01 module includes a
proprietary SAW (surface acoustic wave) delay line as
part of the VCSO. This results in a high frequency,
high-Q, low phase noise oscillator that assures low
intrinsic output jitter.
PIN ASSIGNMENT (9 x 9 mm SMT)
FIN_SEL0
SEL0
SEL1
SEL2
NC
VCC
DNC
DNC
DNC
28 18
29 17
30 16
31 M 1 0 1 0 15
32 14
33 ( T o p V i e w )
34
13
12
35 11
36 10
VCC
NC
nFOUT
FOUT
GND
NC
NC
VCC
GND
FEATURES
Ideal for OC-12/48 data clock
Integrated SAW delay line
Output frequencies from 150 to 175 MHz
(Specify VCSO output frequency at time of order)
Low phase jitter of 0.5 ps rms, typical (12kHz to 20MHz)
LVPECL clock output
Pin-selectable feedback and reference divider ratios,
no programming required
Scalable dividers provide further adjustment of loop
bandwidth as well as jitter tolerance
Reference clock inputs support differential LVDS,
LVPECL, as well as single-ended LVCMOS, LVTTL
Single 3.3V power supply
Small 9 x 9 mm SMT (surface mount) package
SIMPLIFIED BLOCK DIAGRAM
Figure 1: Pin Assignment
Example I/O Clock Frequency Combinations
Using M1010-01-155.5200
Frequency
Input (Mfin)
Ratio
Input Reference
Clock
(MHz)
Output
Clock MHz
8 19.44
2
77.76
155.52
1 155.52
Table 1: Example I/O Clock Frequency Combinations
DIF_REF0
nDIF_REF0
DIF_REF1
nDIF_REF1
REF_SEL
M1010
0
1
R Div
Loop
Filter
M Div
Mfin Div
VCSO
3
SEL2:0
2
FIN_SEL1:0
Divider LUT
Mfin Divider
LUT
FOUT
nFOUT
Figure 2: Simplified Block Diagram
M1010-01 Datasheet Rev 0.4
Revised 29Sep2003
M1010-01 VCSO Based Clock Jitter Attenuator
Integrated Circuit Systems, Inc. Communications Modules www.icst.com tel (508) 852-5400


M1010-01 데이터시트, 핀배열, 회로
Integrated
Circuit
Systems, Inc.
M1010-01
VCSO BASED CLOCK JITTER ATTENUATOR
Preliminary Information
DETAILED BLOCK DIAGRAM
DIF_REF0
nDIF_REF0
DIF_REF1
nDIF_REF1
M1010
MUX
0
1
REF_SEL
R Div
RLOOP CLOOP
RLOOP CLOOP
RPOST
RPOST
CPOST
CPOST
OP_IN nOP_IN OP_OUT nOP_OUT nVC VC
Phase
Detector
RIN
RIN Loop Filter
Amplifier
Phase
Locked
Loop
(PLL)
M Div
Mfin Divider
External
Loop Filter
Components
SAW Delay Line
Phase
Shifter
VCSO
3
SEL2:0
2
FIN_SEL1:0
Divider LUT
Mfin Divider
LUT
FOUT
nFOUT
PIN DESCRIPTIONS
Figure 3: Detailed Block Diagram
Number
Name
1, 2, 3, 10, 14, 26 GND
I/O Configuration
Ground
Description
Power supply ground connections.
4
9
OP_IN
nOP_IN
Input
5
8
nOP_OUT
OP_OUT
Output
6
7
nVC
VC
Input
External loop filter connections.
See Figure 4, External Loop Filter, on pg. 4.
11, 18, 19, 33
VCC
Power
Power supply connection, connect to +3.3V.
12, 13, 17, 25, 32
15
16
20
21
NC
FOUT
nFOUT
nDIF_REF1
DIF_REF1
No internal connection.
Output No internal terminator Clock output pairs. Differential LVPECL.
Input
Internal pull-UP resistor1 Reference clock input pair.
Internal pull-down resistor1 Differential LVPECL or LVDS.
22
REF_SEL
Input
Internal pull-down resistor1
Reference clock input selection. LVCMOS/LVTTL:
Logic 1 selects DIF_REF1, nDIF_REF1.
Logic 0 selects DIF_REF0, nDIF_REF0.
23
24
nDIF_REF0
DIF_REF0
Input
Internal pull-UP resistor1 Reference clock input pair.
Internal pull-down resistor1 Differential LVPECL or LVDS.
27
28
FIN_SEL1
FIN_SEL0
Input clock frequency selection. LVCMOS/LVTTL.
Input Internal pull-down resistor1 See Table 3, Mfin (Frequency Input) Divider Look-Up Table
(LUT) on pg. 3.
29
30
31
SEL0
SEL1
SEL2
Input
Internal pull-UP resistor1
M and R divider value selection. LVCMOS/ LVTTL.
See Table 4, SEL2:0 Look-up Table (LUT) on pg. 3.
34, 35, 36
DNC
Do Not Connect.
Table 2: Pin Descriptions
Note 1: For typical values of internal pull-down and pull-up resistors, see “Inputs with Pull-down” and “Inputs with Pull-up”
in Table 8, DC Characteristics, on pg. 6.
M1010-01 Datasheet Rev 0.4
2 of 8
Revised 29Sep2003
Integrated Circuit Systems, Inc. Communications Modules www.icst.com tel (508) 852-5400




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VCSO BASED CLOCK JITTER ATTENUATOR - ETC