ICS81006I 데이터 시트보기 (PDF) - Integrated Device Technology
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ICS81006I Datasheet PDF : 14 Pages
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VCXO-TO-LVCMOS OUTPUTS
ICS81006I
GENERAL DESCRIPTION
The ICS81006I is a high performance, low jitter/
ICS
low phase noise VCXO and is a member of the
HiPerClockS™ HiPerClockS™ family of high performance clock
solutions from IDT. The ICS81006I works in
conjunction with a pullable crystal to generate
an output clock over the range of 12MHz - 40MHz and has
6 LVCMOS outputs, effectively integrating a fanout buffer
function.
The frequency of the VCXO is adjusted by the VC control
voltage input. The output range is ±100ppm around the
nominal crystal frequency. The VC control voltage range is
0 - VDD. The device is packaged in a small 4mm x 4mm
VFQFN package and is ideal for use on space constrained
boards typically encountered in ADSL/VDSL applications.
FEATURES
• Six LVCMOS/LVTTL outputs, 20Ω nominal
output impedance
• Output Q5 can be selected for ÷1 or ÷2 frequency relative to
the crystal frequency
• Output frequency range: 12MHz to 40MHz
• Crystal pull range: ± 90ppm (typical)
• Synchronous output enable places outputs in High-Z state
• On-chip filter on VIN to suppress noise modulation of VCXO
•
V /V
DD DDO
combinations
3.3V/3.3V
3.3V/2.5V
3.3V/1.8V
2.5V/2.5V
2.5V/1.8V
• 4mm x 4mm 20 Lead VFQFN package is ideal for space
constrained designs
• -40°C to 85°C ambient operating temperature
• Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
BLOCK DIAGRAM
OE0 (Pullup)
VC
LP Filter
SYNC
XTAL_IN
XTAL_OUT
VCXO
DIV_SEL_Q5 (Pulldown)
0: ÷1
1: ÷2
PIN ASSIGNMENT
Q0
20 19 18 17 16
XTAL_IN 1
15 GND
XTAL_OUT 2
14 Q2
Q1
VDD 3
13 VDDO
VC 4
12 Q3
Q2
DIV_SEL_Q5 5
11 GND
6 7 8 9 10
Q3
ICS81006I
20-Lead VFQFN
Q4
4mm x 4mm x 0.95 package body
K Package
Top View
Q5
OE1 (Pullup)
SYNC
IDT™ / ICS™ VCXO-TO-LVCMOS OUTPUTS
1
ICS81006AKI REV A OCTOBER 2, 2006
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