參數(shù)資料
型號(hào): ICS84321AYLFT
元件分類: 時(shí)鐘產(chǎn)生/分配
英文描述: 260 MHz, OTHER CLOCK GENERATOR, PQFP32
封裝: 7 X 7 MM, 1.40 MM HEIGHT, LEAD FREE, MS-026, LQFP-32
文件頁(yè)數(shù): 1/18頁(yè)
文件大?。?/td> 204K
代理商: ICS84321AYLFT
84321AY
www.icst.com/products/hiperclocks.html
REV. B JUNE 9, 2005
1
Integrated
Circuit
Systems, Inc.
ICS84321
260MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL
LVPECL FREQUENCY SYNTHESIZER
GENERAL DESCRIPTION
The ICS84321 is a general purpose, dual output
Crystal-to-3.3V Differential LVPECL High Frequency
Synthesizer and a member of the HiPerClockS
family of High Performance Clock Solutions from
ICS.The ICS84321 has a selectable TEST_CLK or
crystal inputs.The VCO operates at a frequency range of 620MHz
to 780MHz. The VCO frequency is programmed in steps equal
to the value of the input reference or crystal frequency. The VCO
and output frequency can be programmed using the serial or
parallel interfaces to the configuration logic.
BLOCK DIAGRAM
PIN ASSIGNMENT
FEATURES
Dual differential 3.3V LVPECL outputs
Selectable crystal oscillator interface
or LVCMOS/LVTTL TEST_CLK
Output frequency range: 103.3MHz to 260MHz
Crystal input frequency range: 14MHz to 40MHz
VCO range: 620MHz to 780MHz
Parallel or serial interface for programming counter
and output dividers
RMS period jitter: 3ps (typical)
RMS phase jitter at 155.52MHz, using a 38.88MHz crystal
(12kHz to 20MHz): 2.5ps (typical)
Phase noise: 155.52MHz
Offset
Noise Power
100Hz .................. -84.1 dBc/Hz
1kHz ................ -109.8 dBc/Hz
10kHz ................ -126.3 dBc/Hz
100kHz ................ -128.7 dBc/Hz
3.3V supply voltage
0°C to 70°C ambient operating temperature
Lead-Free package RoHS compliant
32 31 30 29 28 27 26 25
9
10 11 12 13 14 15 16
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
XTAL_OUT
TEST_CLK
XTAL_SEL
VCCA
S_LOAD
S_DATA
S_CLOCK
MR
M5
M6
M7
M8
N0
N1
nc
VEE
V
EE
nFOUT0
FOUT0
V
CCO
nFOUT1
FOUT1
V
CC
TEST
X
T
AL_IN
nP_LOAD
VCO_SEL
M0
M1
M2
M3
M4
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
ICS84321
HiPerClockS
ICS
OSC
VCO_SEL
XTAL_SEL
TEST_CLK
XTAL_IN
XTAL_OUT
S_LOAD
S_DATA
S_CLOCK
nP_LOAD
M0:M8
N0:N1
VCO
PLL
FOUT0
nFOUT0
FOUT1
nFOUT1
TEST
CONFIGURATION
INTERFACE
LOGIC
÷ M
0
1
0
1
PHASE DETECTOR
MR
÷ 3
÷ 4
÷ 5
÷ 6
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