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PDF M2004-01 Data sheet ( Hoja de datos )
| Número de pieza | M2004-01 | |
| Descripción | Frequency Synthesizer | |
| Fabricantes | ICS | |
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Micro Networkswww.DataSheet4U.com
An Integrated Circuit Systems Company
M2004-01
Preliminary Specifications
M2004-01
Frequency Synthesizer
DESCRIPTION
The M2004-01 integrates a high performance Phase
Locked Loop (PLL) with a Voltage Controlled SAW
Oscillator (VCSO) to provide a low jitter Frequency
Translator in a 9mm x 9mm surface mount package.
The internal high “Q” SAW filter provides low jitter
signal performance and determines the maximum
output frequency of the VCSO. A programmable
output divider can divide the VCSO frequency to
achieve an output as low as 38.88MHz.
FEATURES
Output Clock Frequency up to 700MHz
Differential LVPECL Outputs
Internal Low-jitter SAW-based Oscillator
Intrinsic Jitter <1ps rms (12kHz - 20MHz)
Jitter Attenuation of Input Reference Clock
Dual Input MUX
Parallel Programming
Tunable Loop Filter Response
Differential LVPECL Outputs
3.3V Operation
Small 9mm x 9mm SMT Package
The input to the Frequency Translator is provided by
selecting between one of two output reference
clocks. The output frequency is an integer multiple
of the input reference frequency.
Parallel and serial control of the output and
feedback dividers is provided via the configuration
logic. An external loop filter sets the PLL bandwidth
which can be optimized to provide jitter attenuation
of the input reference clock.
The M2004-01 is available at SONET/SDH and
10GbE frequencies up to 700MHz.
APPLICATIONS
SONET / SDH / 10GbE System
Synchronization
Add / Drop Muxes, Access and Edge
Switches
Line Card System Clock Cleaner /
Translator
Optical Module Clock Cleaner / Translator
ABSOLUTE MAX RATINGS
Inputs, VI : ................................................. -0.5 to VCC+0.5V
Output, VO : ................................................. -0.5 to VCC+0.5V
Supply Voltage, VDD : ......................................................... 4.6 V
Storage Temperature, TSTO : ............................ -45°C to +100°C
Stresses beyond those listed under Absolute Maximum Ratings may cause
permanent damage to the device. These ratings are stress specifications
only. Functional operation of product at these conditions or any conditions
beyond those listed in the DC Characteristics or AC Characteristics is not
implied. Exposure to absolute maximum rating conditions for extended peri-
ods may affect product reliability.
ISO 9001
Registered
Micro Networks 324 Clark Street Worcester, MA 01606 tel: 508-852-5400 fax: 508-852-8456 www.micronetworks.com
1
1 page  
Micro Networks
An Integrated Circuit Systems Company
M2004-01
Preliminary Specifications
TABLE 4
Symbol
CIN
RPULLUP
RPULLDOWN
PIN CHARACTERISTICS
Parameter
Input Capacitance
Input Pullup Resistor
Input Pulldown Resistor
Test Conditions
Min Typical Max Units
4 pF
51 kΩ
51 kΩ
PARALLEL & SERIAL MODES FUNCTION
TABLE 5A
Inputs
MR nP Load M
N S Load S Clock S Data Conditions
HX
XX
X X X Reset, Forces outputs LOW.
L L Data Data X X X Data on M and N inputs passed directly to the M
divider and N output divider. TEST output forced LOW.
L ↑ Data Data L X X Data is latched into input registers and remains
loaded until next LOW transition or until a serial event
occurs.
LH
XX
L ↑ Data Serial input mode. Shift register is loaded with data
on S_DATA on each rising edge of S_CLOCK
LH
XX
↑ L Data Contents of the shift register are passed to the M
divider and N output divider.
LH
XX
↓ L Data M divider and N output divider values are latched.
LH
XX
L X X Parallel or serial input do not affect shift registers.
LH
XX
H ↑ Data S_DATA passed directly to M divider as it is clocked.
Note: L = Low; H = High; X = Don’t care; ↑ = Rising Edge Transition; ↓ = Falling Edge Transition
PROGRAMMABLE VCSO FREQUENCY FUNCTION
TABLE 5B
VCSO Frequency
32 16
8
4
2
1
(MHz)
M Divide
M5
M4
M3
M2
M1
M0
325 13 0 0 1 1 0 1
350 14 0 0 1 1 1 0
375 15 0 0 1 1 1 1
400 16 0 1 0 0 0 0
• • ••••••
• • ••••••
600 24 0 1 1 0 0 0
625 25 0 1 1 0 0 1
650 26 0 1 1 0 1 0
NOTE 1: These M divide values and the resulting frequencies correspond to a reference frequency of 25MHz.
Micro Networks 324 Clark Street Worcester, MA 01606 tel: 508-852-5400 fax: 508-852-8456 www.micronetworks.com
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet M2004-01.PDF ] | |
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