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參數(shù)資料
| 型號： | ICS843034 |
| 英文描述： | MULTI-RATE 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER |
| 中文描述： | 多速率3.3伏，2.5伏的LVPECL頻率合成器 |
| 文件頁數(shù)： | 1/23頁 |
| 文件大小： | 250K |
| 代理商： | ICS843034 |
843034AY
www.icst.com/products/hiperclocks.html
REV. A JULY 25, 2005
1
Integrated
Circuit
Systems, Inc.
ICS843034
F
EMTO
C
LOCKS
M
ULTI
-R
ATE
3.3V, 2.5V LVPECL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
G
ENERAL
D
ESCRIPTION
The ICS843034 is a general purpose, low phase
noise LVPECL synthesizer which can generate
frequencies for a wide variety of applications. The
ICS843034 has a 4:1 input Multiplexer from which
the following inputs can be selected: 1 differential
input, 1 single-ended input, or two crystal
oscillators, thus making the device ideal for frequency
translation or frequency generation. Each differential LVPECL
output pair has an output divider which can be independently
set so that two different frequencies can be generated.
Additionally, each LVPECL output pair has a dedicated power
supply pin so the outputs can run at 3.3V or 2.5V. The
ICS843034 also supplies a buffered copy of the reference
clock or crystal frequency on the single-ended REF_CLK pin
which can be enabled or disabled (disabled by default). The
output frequency can be programmed using either a serial or
parallel programming interface.
The phase jitter of the ICS843034 is less than 1ps rms, making
it suitable for use in Fibre Channel, SONET, and Ethernet
applications.
Example applications include systems which must support
both FEC and non FEC rates. In 10Gb Fibre Channel, for
example, you can use a 25.5MHz crystal to generate a
159.375MHz reference clock, and then switch to a 20.544MHz
crystal to generate 164.355MHz for 66/64 FEC. Other
applications could include supporting both Ethernet
frequencies and SONET frequencies in an application. When
Ethernet frequencies are needed, a 25MHz crystal can be
used and when SONET frequencies are needed, the input
MUX can be switched to select a 38.88MHz Crystal.
F
EATURES
Dual differential 3.3V LVPECL outputs which can be set
independently for either 3.3V or 2.5V
4:1 Input Mux:
1 differential input
1 single-ended input
2 crystal oscillator interfaces
CLK, nCLK pair can accept the following differential
input levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL
TEST_CLK accepts LVCMOS or LVTTL input levels
Output frequency range: 35MHz to 750MHz
Crystal input frequency range: 12MHz to 40MHz
VCO range: 560MHz to 750MHz
Parallel or serial interface for programming feedback
divider and output dividers
RMS phase jitter at 333.33MHz, using a 22.222MHz
crystal (12kHz to 20MHz): 0.80ps (typical)
Supply voltage modes:
LVPECL outputs (core/outputs):
3.3V/3.3V
3.3V/2.5V
REF_CLK output (core/outputs):
3.3V/3.3V
0°C to 70°C ambient operating temperature
Industrial temperature available upon request
Available in both, Standard and RoHS/Lead-Free compli-
ant packages
HiPerClockS
ICS
P
IN
A
SSIGNMENT
48 47 46 45 44 43 42 41 40 39 38 37
13 14 15 16 17 18 19 20 21 22 23 24
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
M8
NB0
NB1
NB2
OE_REF
OE_A
OE_B
V
CC
NA0
NA1
NA2
V
EE
XTAL_OUT1
XTAL_IN1
XTAL_OUT0
XTAL_IN0
TEST_CLK
SEL1
SEL0
V
CCA
S_LOAD
S_DATA
S_CLOCK
MR
C
n
n
V
M
M
M
M
M
M
M
M
ICS843034
48-Pin LQFP
7mm x 7mm x 1.4mm
package body
Y Package
Top View
V
E
n
V
C
_
R
R
V
C
_
B
n
F
V
C
_
A
n
F
V
C
T
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial
product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.
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| ICS843034AY | MULTI-RATE 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER |
| ICS843034AYL | MULTI-RATE 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER |
| ICS843034AYLF | MULTI-RATE 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER |
| ICS843034AYLFT | MULTI-RATE 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER |
| ICS843034AYT | MULTI-RATE 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS843034-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS? MULTI-RATE LVPECL FREQUENCY SYNTHESIZER |
| ICS843034A01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ MULTI-RATE LVPECL FREQUENCY SYNTHESIZER |
| ICS843034AY | 制造商:ICS 制造商全稱:ICS 功能描述:MULTI-RATE 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER |
| ICS843034AY-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ MULTI-RATE LVPECL FREQUENCY SYNTHESIZER |
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