http://www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf





Connor-Winfield
Connor-Winfield

SCG4000 Datasheet Preview

SCG4000 Datasheet

Synchronous Clock Generators

No Preview Available !

SCG4000 pdf
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
SCG4000 Series
Synchronous Clock
Generators
PLL
Bulletin
Page
Revision
Date
Issued By
SG031
1 of 12
A01
15 JUNE 01
MBatts
Application
The Connor-Winfield SCG4000 Series
provides high precision phase lock loop
frequency translation for the
telecommunication applications.
SCG4000 Series is well suited for use in
line cards, service termination cards and
similar functions to provide reliable
reference, phase locked, synchronization
for TDM, PDH, SONET and SDH network
equipment. The SCG4000 Series provides
a jitter filtered, wander following output
signal sychronized to a superior Stratum or
peer input reference signal.
Features
3.3V High
Precision PLL
Tri-State
Capability
Active Alarms
• Guaranteed Free
Run ±20ppm
1 sec. Acquisition
Time



Connor-Winfield
Connor-Winfield

SCG4000 Datasheet Preview

SCG4000 Datasheet

Synchronous Clock Generators

No Preview Available !

SCG4000 pdf
General Description
The SCG4000 Series is a digital phase locked loop
generating a LVPECL outputs from an intrinsically low
jitter voltage controlled crystal oscillator. The LVPECL
outputs may be disabled. The jitter attenuated internal
reference, divided down from the output frequency, is also
output to a pin.
The SCG4000 Series can lock to one of four possible
reference frequencies from 8 to 64 KHz, which is
selectable using two input select pins. A filtered reference
output signal is available at the same frequency. The unit
has an acquisition time of about 1 second and it is
tolerant of different reference duty cycles.
Functional Block Diagram
Figure 1
Further features include alarm outputs for Loss-of-
Reference (LOR) and Loss-of-Lock (LOL). During the
LOR alarm, the SCG400 will also enter a Free Run
state, which will guarantee a 20 ppm accurate output.
Additionally the Free Run mode may be entered
manually.
The alarms and reference output may be put into
the tri-state high impedance condition for external
testing purposes.
The package dimensions are 1” x 1.025” x .407” on
a 6 layer FR4 board with castellated pins. Parts are
assembled using high temperature solder to withstand
63/37 alloy, 180° C surface mount reflow processes.
T8 B #ÃTr…vr†
7 y‚pxÃ9 vht…h€
Force Free Run
(Pin 13)
Reference Input
(Pin 4)
Select A
(Pin 5)
Select B
(Pin 6)
VCXO Enable
(Pin 1)
ALARM
D E T E C T IO N
D IV ID E R
DPFD
AN ALO G
F IL T E R
FREE RUN
CONTROL
D IV ID E R
VCXO
LOL Alarm Output
(Pin 11)
LOR Alarm Output
(Pin 12)
Differential
LVPECL
Outputs
Q
(Pin 18)
QN
(Pin 16)
CMOS
Reference Output
(Pin 7)
Table 1
Model
SCG4000
SCG4010
Input
Ref Freq
8-64 kHz
19.44 MHz
Max
Duty
Cycle
40/60
40/60
Model Comparison Table
CMOS
Reference Output
(Pin #7)
= Input Ref Freq.
19.44 MHz
LVPECL
Oscillator Output
(Pin #16 & 18)
155.52 MHz
155.52 MHz
Notes
Basic Model
*Features which differentiate a model from the base model (SCG4000) are highlighted in boldface color and in the notes column.
Data Sheet #: SG031 Page 2 of 12 Rev: A01 Date: 06 / 15 / 01
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice


Part Number SCG4000
Description Synchronous Clock Generators
Maker Connor-Winfield
Total Page 12 Pages
PDF Download
SCG4000 pdf
Download PDF File
SCG4000 pdf
View for Mobile



Buy Electronic Components




Related Datasheet

1 SCG4000 Synchronous Clock Generators Connor-Winfield
Connor-Winfield
SCG4000 pdf
2 SCG4000 Synchronous Clock Generators Connor-Winfield
Connor-Winfield
SCG4000 pdf






Part Number Start With

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

site map

webmaste! click here

contact us

Buy Components