參數(shù)資料
型號: ICS844003BG-01LF
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 1/19頁
文件大?。?/td> 0K
描述: IC SYNTHESIZER 3LVDS 24-ETSSOP
產(chǎn)品培訓(xùn)模塊: PCI-Express
標(biāo)準(zhǔn)包裝: 62
系列: HiPerClockS™, FemtoClock™
類型: 頻率合成器
PLL: 帶旁路
輸入: LVCMOS,LVTTL,晶體
輸出: LVDS
電路數(shù): 1
比率 - 輸入:輸出: 2:3
差分 - 輸入:輸出: 無/是
頻率 - 最大: 680MHz
除法器/乘法器: 是/無
電源電壓: 3.135 V ~ 3.465 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 24-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 24-TSSOP
包裝: 管件
其它名稱: 844003BG-01LF
FEMTOCLOCKS CRYSTAL-TO-LVDS
FREQUENCY SYNTHESIZER
ICS844003-01
IDT / ICS LVDS FREQUENCY SYNTHESIZER
1
ICS844003BG-01 REV. A AUGUST 21, 2008
General Description
The ICS844003-01 is a 3 differential output LVDS
Synthesizer designed to generate Ethernet refer-
ence clock frequencies and is a member of the
HiPerClocks family of high performance clock
solutions from IDT. Using a 19.53125MHz or
25MHz, 18pF parallel resonant crystal, the following frequencies
can be generated based on the settings of 4 frequency select pins
(DIV_SELA[1:0], DIV_SELB[1:0]): 625MHz, 312.5MHz,
156.25MHz, and 125MHz. The ICS844003-01 has 2 output banks,
Bank A with 1 differential LVDS output pair and Bank B with 2
differential LVDS output pairs.
The two banks have their own dedicated frequency select pins and
can be independently set for the frequencies mentioned above.
The ICS844003-01 uses IDT’s 3rd generation low phase noise
VCO technology and can achieve 1ps or lower typical rms phase
jitter, easily meeting Ethernet jitter requirements. The
ICS844003-01 is packaged in a small 24-pin TSSOP package.
Features
Three differential LVDS output pairs on two banks, Bank A with
one LVDS pair and Bank B with two LVDS output pairs
Using a 19.53125MHz or 25MHz crystal, the two output banks
can be independently set for 625MHz, 312.5MHz, 156.25MHz
or 125MHz
Selectable crystal oscillator interface or LVCMOS/LVTTL
single-ended input
VCO range: 490MHz - 680MHz
RMS phase jitter @ 156.25MHz (1.875MHz – 20MHz):
0.56ps (typical)
Full 3.3V supply mode
0°C to 70°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
Pin Assignment
HiPerClockS
ICS
ICS844003-01
24-Lead TSSOP, E-Pad
4.40mm x 7.8mm x 0.925mm
package body
G Package
Top View
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
DIV_SELB0
VCO_SEL
MR
VDDO_A
QA0
nQA0
OEB
OEA
FB_DIV
VDDA
VDD
DIV_SELA0
DIV_SELB1
VDDO_B
nQB0
QB0
nQB1
QB1
XTAL_SEL
REF_CLK
XTAL_IN
XTAL_OUT
GND
DIV_SELA1
0
1
0
1
Phase
Detector
VCO
0 = ÷25 (default)
1 = ÷32
0 0
÷1
0 1
÷2
1 0
÷3
1 1
÷4 (default)
0 0
÷2
0 1
÷4
1 0
÷5
1 1
÷8 (default)
FB_DIV
OSC
QA0
QB0
QB1
OEA
OEB
MR
DIV_SELA[1:0]
DIV_SELB[1:0]
VCO_SEL
XTAL_SEL
FB_DIV
REF_CLK
XTAL_IN
XTAL_OUT
Pulldown
Pullup
Block Diagram
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