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参数资料
| 型号： | ICS843242AGT |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 625 MHz, OTHER CLOCK GENERATOR, PDSO16 |
| 封装： | 4.40 X 5 MM, 0.92 MM HEIGHT, MO-153, TSSOP-16 |
| 文件页数： | 1/16页 |
| 文件大小： | 280K |
| 代理商： | ICS843242AGT |
FEMTOCLOCKS CRYSTAL-TO-3.3V
LVPECL FREQUENCY SYNTHESIZER
ICS843242
IDT / ICS 3.3V LVPECL FREQUENCY SYNTHESIZER
1
ICS843242AG REV. A OCTOBER 2, 2007
PRELIMINARY
GENERAL DESCRIPTION
The ICS843242 is a 2 differential output LVPECL
Synthesizer designed to generate Ether net
reference clock frequencies and is a member of the
HiPerClocks family of high performance clock
solutions from IDT. Using a 31.25MHz or
26.041666MHz, 18pF parallel resonant crystal, the follow-ing
frequencies can be generated based on the settings of
4 frequency select pins (SEL[A1:A0], SEL[B1:B0]): 625MHz,
312.5MHz, 156.25MHz, and 125MHz.
The two banks have their own dedicated frequency select pins
and can be independently set for the frequencies mentioned
above. The ICS843242 IDT’s 3
rd
generation low phase noise
VCO technology and can achieve 1ps or lower typical rms
phase jitter, easily meeting Ethernet jitter requirements. The
ICS843242 is packaged in a small 16-pin TSSOP package.
FEATURES
Two 3.3V differential LVPECL output pairs
Using a 31.25MHz or 26.041666 crystal, the two output
banks can be independently set for 625MHz, 312.5MHz,
156.25MHz or 125MHz
Crystal oscillator interface
VCO range: 560MHz to 700MHz
RMS phase jitter @ 625MHz (1.875MHz - 20MHz):
0.4ps (typical)
Full 3.3V supply mode
0°C to 70°C ambient operating temperature
Industrial temperature available upon request
Available in both standard (RoHS 5) and lead-free (RoHS 6)
compliant packages
HiPerClockS
ICS
BLOCK DIAGRAM
XTAL_IN
XTAL_OUT
QA
nQA
QB
nQB
OSC
Phase
Detector
VCO
560MHz - 700MHz
Feedback Divider
2
0 0
÷1
0 1
÷2 (default)
1 0
÷4
1 1
÷5
0 0
÷1
0 1
÷2
1 0
÷4 (default)
1 1
÷5
0 = ÷20 (default)
1 = ÷24
SELA[0:1}
FB_SEL
SELB[0:1}
Pulldown
0=Pullup
1=Pulldown
0=Pulldown
1=Pullup
PIN ASSIGNMENT
nQB
QB
VCCO_B
SELB1
SELB2
VCCO_A
QA
nQA
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
XTAL_IN
XTAL_OUT
VEE
SELA1
SELA0
VCC
VCCA
FB_SEL
ICS843242
16-Lead TSSOP
4.4mm x 5.0mm x 0.92mm
package body
G Package
Top View
The Preliminary Information presented herein represents a product in pre-production. The noted characteristics are based on initial product characterization
and/or qualification. Integrated Device Technology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS843246 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
| ICS843246AG | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
| ICS843246AGLF | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
| ICS843246AGLFT | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
| ICS843246AGT | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
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