参数资料
型号: ICS813323BGLF
厂商: IDT, Integrated Device Technology Inc
文件页数: 1/22页
文件大小: 0K
描述: IC ATTENUATOR/MULTIPLIER 24TSSOP
标准包装: 62
系列: HiPerClockS™, FemtoClock™
类型: 扇出配送,频率变换器,抖动衰减器,压控晶体振荡器(VCXO)
PLL: 带旁路
输入: HCSL,LVDS,LVHSTL,LVPECL,SSTL
输出: LVPECL
电路数: 1
比率 - 输入:输出: 2:3
差分 - 输入:输出: 是/是
频率 - 最大: 622.08MHz
除法器/乘法器: 是/无
电源电压: 3.135 V ~ 3.465 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 24-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 24-TSSOP
包装: 管件
其它名称: 813323BGLF
DATA SHEET
ICS813323BG REVISION A APRIL 13, 2010
1
2010 Integrated Device Technology, Inc.
VCXO Jitter Attenuator &
FemtoClockMultiplier
ICS813323
General Description
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
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.
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
HiPerClockS
ICS
Output
Divider
1, 4, 8, 32
Phase
Detector
External
Loop Filter Input
Pre-Divider
1, 4, 8, 32
VCXO
19.44MHz
VCO
622.08MHz
19.44MHz
Phase Detector
Loop Filter
0
1
÷32
VCXO Jitter Attenuation PLL
FemtoClock Frequency Multiplier
Q0
nQ0
Q1
nQ1
Q2
nQ2
Pullup
Pulldown
Pullup/Pulldown
XT
AL_OUT
XT
AL_IN
nBypass
CLK
PSEL[1:0]
FSEL[1:0]
OE
nCLK
2
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
LF
VCCA
VCC
VCCO
nQ0
Q0
PSEL0
VEE
PSEL1
XTAL_OUT
XTAL_IN
VEE
OE
VCCO
Q2
nQ2
Q1
nQ1
FSEL0
VEE
FSEL1
nBYPASS
CLK
nCLK
Pin Assignment
Block Diagram
ICS813323
24 Lead TSSOP
4.4mm x 7.8mm x 0.925mm package body
G Package
Top View
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