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8430002AYLF

Description
High-Performance Fractional-N Frequency Synthesizer
File Size821KB,27 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
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8430002AYLF Overview

High-Performance Fractional-N Frequency Synthesizer

High-Performance Fractional-N
Frequency Synthesizer
ICS8430002
DATA SHEET
General Description
The ICS8430002 is a general purpose, high-
performance, fractional-n LVPECL frequency
HiPerClockS™
synthesizer which can generate frequencies for a wide
variety of applications with output frequency step sizes
of <10ppm. The ICS8430002 has a 2:1 input
Multiplexer from which either a crystal input or a differential input can
be selected. The differential input can be wired to accept
single-ended signals (see the applications section of this datasheet).
Features
6-Bit Integer and 12-Bit Fractional Feedback Divider
Dual differential 3.3V LVPECL outputs which can be set
independently for either 3.3V or 2.5V
2:1 Input Mux:
One differential input
One crystal oscillator interface
PCLK, nPCLK pair can accept the following differential input
levels: LVPECL, CML, SSTL
Output frequency range: 30.625MHz to 640MHz
Crystal input frequency range: 12MHz to 40MHz
VCO range: 490MHz to 650MHz
Parallel or serial interface for programming feedback divider and
output dividers
Supply voltage modes:
Core/Outputs:
3.3V/3.3V
3.3V/2.5V
0°C to 70°C ambient operating temperature
Available in lead-free (RoHS 6) package
ICS
Each of the differential LVPECL outputs 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
ICS8430002 also supplies a buffered copy of the reference clock or
crystal frequency on the single-ended REF_OUT 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 device features a fractional feedback divider with a 6-bit integer
and 12-bit fractional value. The minimum step value of the feedback
divider is 1/4096.
Pin Assignment
P1
P0
M5
M4
M3
M2
M1
M0
VCO_SEL
nP_LOAD
nPCLK
PCLK
P2
NB0
NB1
NB2
OE_REF
OEA
OEB
V
CC
NA0
NA1
NA2
V
EE
48 47 46 45 44 43 42 41 40 39 38 37
36
35
34
ICS8430002
33
48 Lead LQFP
5
7mm x 7mm x 1.4mm
32
6
31
package body
7
30
8
29
Y Package
9
28
Top View
10
27
11
26
12
25
13 14 15 16 17 18 19 20 21 22 23 24
1
2
3
4
FOUTA
nFOUTA
V
CCO_A
FOUTB
nFOUTB
V
CCO_B
REF_OUT
V
CCO_REF
nc
TEST
V
CC
V
EE
nc
nc
XTAL_OUT
XTAL_IN
nc
nc
SEL
V
CCA
S_LOAD
S_DATA
S_CLOCK
MR
ICS8430002AY REVISION C NOVEMBER 12, 2009
1
©2009 Integrated Device Technology, Inc.

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