ICS813323BGLFT IDT, Integrated Device Technology Inc, ICS813323BGLFT Datasheet

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ICS813323BGLFT

Manufacturer Part Number
ICS813323BGLFT
Description
IC ATTENUATOR/MULTIPLIER 24TSSOP
Manufacturer
IDT, Integrated Device Technology Inc
Series
HiPerClockS™, FemtoClock®r
Type
Fanout Distribution, Frequency Translator, Jitter Attenuator, Voltage Controlled Crystal Oscillator (VCXO)r
Datasheet

Specifications of ICS813323BGLFT

Pll
Yes with Bypass
Input
HCSL, LVDS, LVHSTL, LVPECL, SSTL
Output
LVPECL
Number Of Circuits
1
Ratio - Input:output
2:3
Differential - Input:output
Yes/Yes
Frequency - Max
622.08MHz
Divider/multiplier
Yes/No
Voltage - Supply
3.135 V ~ 3.465 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
24-TSSOP
Frequency-max
622MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
813323BGLFT
Block Diagram
General Description
to provide reference clock jitter attenuation. The second stage is a
FemtoClock™ frequency multiplier that provides a low jitter, high
frequency SONET output clock.
Pre-divider and output divider multiplication ratios are selected using
device selection control pins. The multiplication ratios are optimized
to support most common clock rates used in SONET applications.
The VCXO requires the use of an external, inexpensive pullable
crystal. The VCXO uses external passive loop filter components
which allows configuration of the PLL loop bandwidth and damping
characteristics.
Pin Assignment
ICS813323BG REVISION A APRIL 13, 2010
HiPerClockS™
4.4mm x 7.8mm x 0.925mm package body
ICS
PSEL[1:0]
FSEL[1:0]
nBypass
nCLK
XTAL_OUT
CLK
OE
XTAL_IN
The ICS813323 is a PLL based synchronous multiplier
that is optimized for SONET clock jitter attenuation and
frequency translation. The device contains two internal
frequency multiplication stages which are cascaded in
series. The first stage is a VCXO PLL that is optimized
PSEL0
PSEL1
Pullup
Pulldown
Pullup/Pulldown
Pullup
Pullup
Pullup
V
V
nQ0
V
CCO
V
V
24 Lead TSSOP
CCA
Q0
LF
CC
EE
EE
G Package
ICS813323
Top View
1
2
3
4
5
6
7
8
9
10
11
12
2
2
VCXO Jitter Attenuator &
FemtoClock
24
23
22
21
20
19
18
17
16
15
14
13
OE
V
nQ2
Q2
nQ1
Q1
FSEL0
FSEL1
CLK
nBYPASS
CCO
Pre-Divider
1, 4, 8, 32
Loop Filter Input
VCXO Jitter Attenuation PLL
Detector
Phase
Multiplier
External
19.44MHz
19.44MHz
VCXO
1
Features
Three differential LVPECL output pairs
One differential input supports the following input types:
LVPECL, LVDS, LVHSTL, SSTL, HCSL
Accepts input frequencies from 19.44MHz to 622.08MHz,
including: 77.76MHz and 155.52MHz input clocks
Attenuates the phase jitter of the input clock by using a low-cost
pullable fundamental mode VCXO crystal
Outputs common SONET clock rates
VCXO PLL bandwidth can be optimized for jitter attenuation
and reference tracking using external loop filter connection
Absolute pull range: ±50ppm
FemtoClock frequency multiplier provides low jitter,
high frequency output
FemtoClock frequency: 622.08MHz
RMS phase jitter @ 155.52MHz, using a 19.44MHz crystal
(12kHz – 20MHz): 1.4ps (typical)
Full 3.3V supply, or mixed 3.3V core/2.5V output supply
0°C to 70°C ambient operating temperature
Available in lead-free (RoHS 6) package
FemtoClock Frequency Multiplier
Phase Detector
Loop Filter
622.08MHz
VCO
÷32
©2010 Integrated Device Technology, Inc.
0
1
1, 4, 8, 32
Output
Divider
ICS813323
DATA SHEET
Q0
nQ0
Q1
nQ1
Q2
nQ2

Related parts for ICS813323BGLFT

ICS813323BGLFT Summary of contents

Page 1

VCXO Jitter Attenuator & FemtoClock General Description The ICS813323 is a PLL based synchronous multiplier ICS that is optimized for SONET clock jitter attenuation and frequency translation. The device contains two internal HiPerClockS™ frequency multiplication stages which are cascaded in ...

Page 2

ICS813323 Data Sheet Table 1. Pin Descriptions Number Name Analog 1 LF Input/Output 2 V Power CCA 3 V Power Power CCO 5, 6 nQ0, Q0 19, 20 Q1, nQ1 Output 21, 22 Q2, nQ2 7, ...

Page 3

ICS813323 Data Sheet Table 3C. OE Function Table Input Clock Outputs OE Q[0:2] nQ[0:2] 0 LOW HIGH 1 Enabled Enabled Table 3D. Bypass Function Table nBypass Input Operation 0 VCXO jitter attenuation PLL and FemtoClock multiplier bypassed. Input passed directly ...

Page 4

ICS813323 Data Sheet Absolute Maximum Ratings NOTE: 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 ...

Page 5

ICS813323 Data Sheet Table 4D. Differential DC Characteristics, V Symbol Parameter I Input High Current IH I Input Low Current IL V Peak-to-Peak Input Voltage PP V Common Mode Input Voltage; NOTE 1 CMR NOTE 1. Common mode voltage is ...

Page 6

ICS813323 Data Sheet AC Electrical Characteristics Table 5A. AC Characteristics, V Symbol Parameter f Input Frequency IN f Output Frequency OUT RMS Phase Jitter, (Random), tjit(Ø) NOTE 1 tjit(per) Period Jitter, RMS; NOTE 2 tsk(o) Output Skew; NOTE 3, 4 ...

Page 7

ICS813323 Data Sheet Table 5B. AC Characteristics, V Symbol Parameter f Input Frequency IN f Output Frequency OUT RMS Phase Jitter, (Random), tjit(Ø) NOTE 1 tjit(per) Period Jitter, RMS; NOTE 2 tsk(o) Output Skew; NOTE ...

Page 8

ICS813323 Data Sheet Typical Phase Noise at 155.52MHz @ 3.3V ICS813323BG REVISION A APRIL 13, 2010 VCXO JITTER ATTENUATOR & FEMTOCLOCK Offset Frequency (Hz) 8 MULTIPLIER ™ ©2010 Integrated Device Technology, Inc. ...

Page 9

ICS813323 Data Sheet Typical Phase Noise at 155.52MHz @ 3.3V Core/2.5V Output ICS813323BG REVISION A APRIL 13, 2010 VCXO JITTER ATTENUATOR & FEMTOCLOCK Offset Frequency (Hz) 9 MULTIPLIER ™ ©2010 Integrated Device Technology, Inc. ...

Page 10

ICS813323 Data Sheet Parameter Measurement Information CC, V CCO V CCA LVPECL V EE -1.3V ± 0.165V 3.3V Core/3.3V LVPECL Output Load AC Test Circuit V CC nCLK V Cross Points PP CLK V EE Differential Input ...

Page 11

ICS813323 Data Sheet Parameter Measurement Information, continued VCXO & FemtoClock PLL Lock Time Application Information Power Supply Filtering Technique As in any high speed analog circuitry, the power supply pins are vulnerable to random noise. To achieve optimum jitter performance, ...

Page 12

ICS813323 Data Sheet Wiring the Differential Input to Accept Single-Ended Levels Figure 1 shows how a differential input can be wired to accept single ended levels. The reference voltage V REF the bias resistors R1 and R2. The bypass capacitor ...

Page 13

ICS813323 Data Sheet Differential Clock Input Interface The CLK /nCLK accepts LVDS, LVPECL, LVHSTL, SSTL, HCSL and other differential signals. Both V SWING and V input requirements. Figures show interface CMR examples for the CLK/nCLK input driven ...

Page 14

ICS813323 Data Sheet Termination for 3.3V LVPECL Outputs The clock layout topology shown below is a typical termination for LVPECL outputs. The two different layouts mentioned are recommended only as guidelines. The differential outputs are low impedance follower outputs that ...

Page 15

ICS813323 Data Sheet Termination for 2.5V LVPECL Outputs Figure 5A and Figure 5B show examples of termination for 2.5V LVPECL driver. These terminations are equivalent to terminating 50Ω – 2V. For V = 2.5V, the V CC CCO ...

Page 16

ICS813323 Data Sheet Schematic Example Figure 6 shows an example of the ICS813323 application schematic. In this example, the device is operated at V decoupling capacitors should be located as close as possible to the power pin. The input is ...

Page 17

ICS813323 Data Sheet VCXO-PLL E C XTERNAL OMPONENTS Choosing the correct external components and having a proper printed circuit board (PCB) layout is a key task for quality operation of the VCXO-PLL. In choosing a crystal, special precaution must be ...

Page 18

ICS813323 Data Sheet Power Considerations This section provides information on power dissipation and junction temperature for the ICS813323. Equations and example calculations are also provided. 1. Power Dissipation. The total power dissipation for the ICS813323 is the sum of the ...

Page 19

ICS813323 Data Sheet 3. Calculations and Equations. The purpose of this section is to calculate the power dissipation for the LVPECL output pairs. LVPECL output driver circuit and termination are shown in Figure 6. V CCO Q1 Figure 6. LVPECL ...

Page 20

ICS813323 Data Sheet Reliability Information θ Table 7. vs. Air Flow Table for a 24 Lead TSSOP JA Meters per Second Multi-Layer PCB, JEDEC Standard Test Boards Transistor Count The transistor count for ICS813323 is: 2915 Package Outline and Package ...

Page 21

ICS813323 Data Sheet Ordering Information Table 9. Ordering Information Part/Order Number Marking 813323BGLF ICS813323BGLF 813323BGLFT ICS813323BGLF NOTE: Parts that are ordered with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information ...

Page 22

ICS813323 Data Sheet 6024 Silver Creek Valley Road Sales 800-345-7015 (inside USA) San Jose, California 95138 +408-284-8200 (outside USA) Fax: 408-284-2775 www.IDT.com/go/contactIDT DISCLAIMER Integrated Device Technology, Inc. (IDT) and its subsidiaries reserve the right to modify the products and/or specifications ...

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