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8V44S269 Datasheet

10-Output Clock Synthesizer

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FemtoClock® Crystal-to-LVDS, LVCMOS
10-Output Clock Synthesizer
8V44S269
Datasheet
General Description
The 8V44S269 is a ten LVDS/LVTTL output clock synthesizer
designed for instrumentation and wireless applications. The device
generates four copies of a 125MHz, two copies of a 100MHz
differential LVDS clock and one 50MHz (LVCMOS) signal with
excellent phase jitter performance. The PLL is optimized for a
reference frequency of 25MHz. Both a crystal interface and a
single-ended input are supported for the reference frequency. Three
LVCMOS outputs duplicate the reference frequency and are
provided for clock tree cascade purpose. Each of the four LVCMOS
outputs can be supplied with either 3.3V, 2.5V or 1.8V, forming the
respective LVCMOS output levels of 3.3V, 2.5V or 1.8V. The device
uses IDT’s third generation FemtoClock® technology for an optimum
of high clock frequency and low phase noise performance, combined
with a low power consumption. The device supports a 3.3V voltage
supply and is packaged in a small, lead-free (RoHS 6) 48-lead
VFQFN package.
Features
Third generation FemtoClock® technology
125MHz, 100MHz and 50MHz output clocks synthesized from a
25MHz reference clock or fundamental mode crystal
Six differential LVDS clock outputs
QA[0:3] outputs (125MHz) are LVDS compatible
QB[0:1] outputs (100MHz) are LVDS compatible
Four single-ended LVCMOS-compatible reference clock outputs
QC output (50MHz) is LVCMOS 3.3V, 2.5V or 1.8V compatible
QREF[0:2] (25MHz) are LVCMOS 3.3V, 2.5V or 1.8V compatible
Crystal interface designed for 25MHz XTAL
RMS phase jitter @ 125MHz, using a 25MHz crystal
(12kHz - 20MHz): 0.57 (typical)
RMS phase jitter @ 100MHz, using a 25MHz crystal
(12kHz - 20MHz): 0.58 (typical)
LVCMOS interface levels for the control input
I/O supply voltages for LVDS:
Core/Output
3.3V/2.5V
I/O supply voltages for LVCMOS:
Core/Output
3.3V/3.3V
3.3V/2.5V
3.3V/1.8V
Lead-free (RoHS 6) 48-lead VFQFN packaging
-55°C to 105°C ambient operating temperature
©2016 Integrated Device Technology, Inc.
1
May 9, 2016


Integrated Device Technology Electronic Components Datasheet

8V44S269 Datasheet

10-Output Clock Synthesizer

No Preview Available !

8V44S269 Datasheet
Block Diagram
nOEA[0:3]
BYPASS
Pull-down (4)
Pull-down
4
XTAL_IN
XTAL_OUT
REF_CLK
OSC
25 MHz
Pull-down
fREF = 25 MHz
1
PFD
&
0 LPF
REF_SEL Pull-down
FemtoClock®
VCO
2500MHz
100
1
÷20
÷25
0
125 MHz
÷2
100 MHz
nOEB[0:1]
Pull-down (2)
2
nOEC Pull-down
50 MHz
25 MHz
nOER[0:1]
Pull-down (2)
2
QA0
nQA0
QA1
nQA1
QA2
nQA2
QA3
nQA3
QB0
nQB0
QB1
nQB1
QC
QREF0
QREF1
QREF2
©2016 Integrated Device Technology, Inc.
2
May 9, 2016


Part Number 8V44S269
Description 10-Output Clock Synthesizer
Maker IDT
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8V44S269 Datasheet PDF






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