ics843001agt Integrated Device Technology, ics843001agt Datasheet

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ics843001agt

Manufacturer Part Number
ics843001agt
Description
Femto Clocks Crystal-to- 3.3v Lvpecl Clock Generator
Manufacturer
Integrated Device Technology
Datasheet
FEMTOCLOCKS™ CRYSTAL-TO-
3.3V LVPECL CLOCK GENERATOR
F
B
IDT
G
using the FREQ_SEL pin. The ICS843001 has excellent <1ps
phase jitter performance, over the 637kHz – 10MHz integration
range. The ICS843001 is packaged in a small 8-pin TSSOP,
making it ideal for use in systems with limited board space.
FREQ_SEL
HiPerClockS™
XTAL_OUT
UNCTION
C
IC S
XTAL_IN
LOCK
ENERAL
y r
/ ICS
2
2
2
t s
6
6
3
l a
5 .
5 .
4 .
6
6
3
F
T
(Pulldown)
2
2
7
3.3V LVPECL CLOCK GENERATOR
e r
ABLE
5
5
5
D
The ICS843001 is a Fibre Channel Clock Generator
and a member of the HiPerClocks
performance devices from IDT. The ICS843001
uses either a 26.5625MHz or a 23.4375 crystal to
synthesize 106.25MHz, 187.5MHz or 212.5MHz,
M
M
M
q
u
IAGRAM
H
H
H
n I
D
e
OSC
z
z
z
p
n
u
c
ESCRIPTION
s t
y
F
R
E
Detector
Phase
Q
0
1
1
_
S
E
M = ÷24 (fixed)
L
O
1
0
u
6
26.5625MHz Ref.
p t
2 .
637.5MHz w/
t u
2
1
5
1
VCO
8
M
2
F
7
H
5 .
e r
5 .
TM
z
M
M
q
(
u
family of high
H
H
D
e
z
z
e
n
a f
c
u
e i
) t l
s
÷3
÷6
1
1
0
F
100KHz ............. -129.6 dBc/Hz
One differential 3.3V LVPECL output
Crystal oscillator interface designed for 23.4375MHz or
26.5625MHz, 18pF parallel resonant crystal
Selectable 106.25MHz, 187.5MHz or 212.5MHz
output frequency
VCO range: 560MHz - 680MHz
RMS phase jitter @ 106.255MHz, using a 26.5625MHz crystal
(637kHz - 10MHz): 0.74ps (typical)
RMS phase noise at 106.25MHz
Phase noise:
3.3V operating supply
-30°C to 85°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
EATURES
10KHz ............. -129.1 dBc/Hz
Offset
100Hz ............... -95.2 dBc/Hz
1KHz ............. -118.7 dBc/Hz
nQ0
Q0
P
4.40mm x 3.0mm x 0.925mm package body
IN
Noise Power
A
ICS843001AG REV B DECEMBER 6, 2006
XTAL_OUT
SSIGNMENT
XTAL_IN
V
V
CCA
EE
8-Lead TSSOP
ICS843001
G Package
Top View
1
2
3
4
ICS843001
8
7
6
5
V
Q0
nQ0
FREQ_SEL
CC

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ics843001agt Summary of contents

Page 1

FEMTOCLOCKS™ CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR G D ENERAL ESCRIPTION The ICS843001 is a Fibre Channel Clock Generator IC S and a member of the HiPerClocks HiPerClockS™ performance devices from IDT. The ICS843001 uses either a 26.5625MHz or a 23.4375 ...

Page 2

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR ABLE IN ESCRIPTIONS ...

Page 3

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR BSOLUTE AXIMUM ATINGS Supply Voltage Inputs, V -0. Outputs Continuous Current 50mA Surge Current 100mA Package Thermal Impedance, JA Storage Temperature, T -65°C to ...

Page 4

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR 3.3V±5%, T ABLE HARACTERISTICS ...

Page 5

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 -190 100 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 ...

Page 6

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 -190 100 IDT ™ / ICS ™ 3.3V LVPECL CLOCK GENERATOR 187.5MH ...

Page 7

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR P ARAMETER LVPECL V EE -1.3V ± 0.165V 3. UTPUT OAD EST IRCUIT nQ0 Q0 Pulse Width t PERIOD t PW odc = t PERIOD O ...

Page 8

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR OWER UPPLY ILTERING ECHNIQUES As in any high speed analog circuitry, the power supply pins are vulnerable to random noise. The ICS843001 provides separate power supplies to isolate any high ...

Page 9

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR L G AYOUT UIDELINE Figure 3A shows a schematic example of the ICS843001. An example of LVEPCL termination is shown in this schematic. Additional LVPECL termination approaches are shown in the LVPECL Termination Application ...

Page 10

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR This section provides information on power dissipation and junction temperature for the ICS843001. Equations and example calculations are also provided. 1. Power Dissipation. The total power dissipation for the ICS843001 is the sum of ...

Page 11

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR 3. Calculations and Equations. The purpose of this section is to derive the power dissipated into the load. LVPECL output driver circuit and termination are shown in Figure calculate worst case ...

Page 12

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR ABLE VS IR LOW ABLE FOR JA Multi-Layer PCB, JEDEC Standard Test Boards T C RANSISTOR OUNT The transistor count for ICS843001 is: 1702 IDT ™ / ICS ...

Page 13

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR TSSOP ACKAGE UTLINE UFFIX EAD IDT ™ / ICS ™ 3.3V LVPECL CLOCK GENERATOR ABLE ACKAGE IMENSIONS ...

Page 14

... While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Incorporated (IDT) assumes no responsibility for either its use or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications ...

Page 15

ICS843001 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR ...

Page 16

... Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, the IDT logo, ICS and HiPerClockS are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners ...

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