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Numéro de référence | ICS8430-62 | ||
Description | 2.5V Differential LVPECL Frequency Synthesizer | ||
Fabricant | Integrated Device Technology | ||
Logo | |||
500MHz, Crystal-to-3.3V, 2.5V
ICS8430-62
Differential LVPECL Frequency Synthesizer
DATASHEET
General Description
The ICS8430-62 is a general purpose, dual output
ICS Crystal-to-3.3V, 2.5V Differential LVPECL High
HiPerClockS™ Frequency Synthesizer and a member of the
HiPerClockS™ family of High Performance Clock
Solutions from IDT. The ICS8430-62 has a selectable
REF_CLK or crystal inputs. The VCO operates at a frequency range
of 250MHz to 500MHz. 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. Frequency steps as
swmwawll.aDsa1taMSHhezecta4Un.bceomachieved using a 16MHz crystal or REF_CLK.
Block Diagram
Features
• Dual differential 3.3V or 2.5V LVPECL outputs
• Selectable crystal oscillator interface or LVCMOS/LVTTL
REF_CLK
• Output frequency range: 20.83MHz to 500MHz
• Crystal input frequency range: 14MHz to 27MHz
• VCO range: 250MHz to 500MHz
• Parallel or serial interface for programming counter
and output dividers
• RMS period jitter: 5ps (maximum)
• Cycle-to-cycle jitter: 35ps (maximum)
• Full 3.3V or 3.3V core/2.5V output supply
• 0°C to 70°C ambient operating temperature
• Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
VCO_SEL Pullup
XTAL_SEL Pullup
REF_CLK Pulldown
0
XTAL_IN
XTAL_OUT
OSC 1
÷16
MR Pulldown
PLL
Phase Detector
VCO
÷M
÷1
÷1.5
÷2
÷3
÷4
÷6
0
÷8
÷12
1
S_LOAD Pulldown
S_DATA Pulldown
S_CLOCK Pulldown
nP_LOAD Pulldown
M0:M8
N0:N2
9
3
Configuration
Interface Logic
Pin Assignment
FOUT0
nFOUT0
FOUT1
nFOUT1
TEST
32 31 30 29 28 27 26 25
M5 1
24 XTAL_OUT
M6 2
23 REF_CLK
M7 3
22 XTAL_SEL
M8 4
21 VCCA
N0 5
20 S_LOAD
N1 6
19 S_DATA
N2 7
18 S_CLOCK
VEE 8
17 MR
9 10 11 12 13 14 15 16
ICS8430-62
32 Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
ICS8430AY-62 REVISION A JULY 2, 2009
1
©2009 Integrated Device Technology, Inc.
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Pages | Pages 23 | ||
Télécharger | [ ICS8430-62 ] |
No | Description détaillée | Fabricant |
ICS8430-61 | CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER | Integrated Circuit Systems |
ICS8430-62 | 2.5V Differential LVPECL Frequency Synthesizer | Integrated Device Technology |
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