ICS84314-02 Datasheet, PDF (1/17 Pages) Integrated Circuit Systems – 700MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS84314-02
700MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL
FREQUENCY SYNTHESIZER W/FANOUT BUFFER
GENERAL DESCRIPTION
The ICS84314-02 is a general purpose quad
ICS
output frequency synthesizer and a member of
HiPerClockS™ _{the HiPerClockS™ family of High Performance}
Clock Solutions from ICS. When the device uses
parallel loading, the M bits are programmable and
the output divider is hard-wired for divide by 2 thus providing
a frequency range of 125MHz to 350MHz. In serial program-
ming mode, the M bits are programmable and the output
divider can be set for either divide by 1, 2, 4 or divide by 8,
providing a frequency range of 31.25MHz to 700MHz.
Additionally, the device supports spread spectrum clocking
(SSC) for minimizing Electromagnetic Interference (EMI). The
low cycle-cycle jitter and broad frequency range of the
ICS84314-02 make it an ideal clock generator for a variety of
demanding applications which require high performance.
BLOCK DIAGRAM
FEATURES
• Fully integrated PLL
• Four differential 3.3V or 2.5V LVPECL outputs
• Selectable crystal oscillator interface
or LVCMOS/LVTTL TEST_CLK input
• Output frequency range: 31.25MHz to 700MHz
• VCO range: 250MHz to 700MHz
• Supports Spread Spectrum Clocking (SSC)
• Parallel interface for programming counter
and output dividers during power-up
• Serial 3 wire interface
• Cycle-to-cycle jitter: 20ps (typical)
• Output skew: TBD
• Output duty cycle: TBD
• Full 3.3V or mixed 3.3V core, 2.5V output operating supply
• 0°C to 85°C ambient operating temperature
• Available in both standard and lead-free RoHS-complaint
packages
PIN ASSIGNMENT
VCO_SEL
XTAL_SEL
TEST_CLK
XTAL_IN
XTAL_OUT
OSC
0
1
÷ 16
PLL
PHASE DETECTOR
Output Divider N
÷1 Serial Mode
MR
VCO
0
÷2 Parallel/Serial Mode
(Power-up Default)
÷4 Serial Mode
1 ÷8 Serial Mode
÷M
÷2
M4
M5
M6
M7
M8
VEE
VCC
VCCO
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
32 31 30 29 28 27 26 25
1
24
2
23
3 ICS84314-02 22
4
32-Lead LQFP
21
7mm x 7mm x 1.4mm
5
package body
20
6
Y Package
19
7
Top View
18
8
17
9 10 11 12 13 14 15 16
TEST_CLK
XTAL_SEL
VCCA
S_LOAD
S_DATA
S_CLOCK
MR
VCCO
S_LOAD
S_DATA
S_CLOCK
nP_LOAD
M0:M8
CONFIGURATION
INTERFACE
LOGIC
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.
84314AY-02
www.icst.com/products/hiperclocks.html
REV. B NOVEMBER 17, 2005
1