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840001AK-34LF

Description
Clock Synthesizer / Jitter Cleaner 2 LVCMOS OUT SYNTHESIZER
Categorysemiconductor    Analog mixed-signal IC   
File Size127KB,15 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
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840001AK-34LF Overview

Clock Synthesizer / Jitter Cleaner 2 LVCMOS OUT SYNTHESIZER

840001AK-34LF Parametric

Parameter NameAttribute value
Product CategoryClock Synthesizer / Jitter Cleaner
ManufacturerIDT (Integrated Device Technology, Inc.)
RoHSDetails
Number of Outputs2 Output
Output LevelLVCMOS, LVTTL
Max Output Freq213.33 MHz
Input LevelCrystal
Maximum Input Frequency42.67 MHz
Supply Voltage - Max3.465 V
Supply Voltage - Min2.375 V
Maximum Operating Temperature+ 70 C
Minimum Operating Temperature0 C
Mounting StyleSMD/SMT
Package / CaseVFQFPN-16
PackagingTube
Height1 mm
Length3 mm
Moisture SensitiveYes
Operating Supply Current100 mA
Factory Pack Quantity100
Width3 mm
FemtoClocks™
Crystal-to-LVCMOS/LVTTL Frequency
840001-34
DATASHEET
General Description
The 840001-34 is a two output LVCMOS/LVTTL Synthesizer. One
output is the LVCMOS/LVTTL main synthesized clock output (Q)
and one output is a three-state LVCMOS/LVTTL reference clock
(REF_OUT) output at the frequency of the crystal oscillator. The
device can accept crystals from 15.3125MHz to 42.67MHz and
can synthesize outputs from 81.67MHz to 213.33MHz. The
840001-34 is packaged in a 3mm x 3mm 16-pin VFQFN, making it
ideal for use on space constrained boards..
Features
Two LVCMOS/LVTTL outputs, 22 typical output impedance
One main clock output (Q)
One three-state reference clock output (REF_OUT)
Crystal oscillator interface can accept crystals from
15.3125MHz to 42.67MHz, 18pF parallel resonant crystal
Q output frequency range: 81.67MHz to 213.33MHz
RMS phase jitter @106.25, (637kHz – 10MHz): 0.38ps (typical)
VCO range: 490MHz to 640MHz
Full 3.3V and 2.5V operating supply
0°C to 70°C ambient operating temperature
Available in lead-free (RoHS 6) package
Common Application Configuration Table
Inputs
Crystal (MHz)
40
26.5625
40
26.5625
25
25
22.5
19.44
M Divider
15
24
15
24
25
25
25
32
VCO (MHz)
600
637.5
600
637.5
625
625
562.5
622.08
N Divider
6
6
4
3
5
4
3
4
Output Frequency
(MHz)
100 (default)
106.25
150
212.5
125
156.25
187.5
155.52
Application
Serial Attached (SCSI),
PCI Express, Processor Clock
Fibre Channel
Serial ATA (SATA), Processor Clock
Fibre Channel 2
Ethernet
10 Gigabit Ethernet
12 Gigabit Ethernet
SONET
Block Diagram
OE
(Pullup)
Pin Assignment
V
DDA
REF_OUT
OE 1
XTAL_IN
16 15 14 13
12 Q
11 V
DDO
10 GND
9 V
DD
5
M1
OSC
XTAL_OUT
Phase
Detector
VCO
490MHz - 640MHz
N-Div
00 = ÷3
01 = ÷4
10 = ÷5
11 = ÷6
(default)
XTAL_IN
Q
2
XTAL_OUT 3
M0 4
6
nc
nc
7
N0
M-Div
11 = ÷15
(default)
10 = ÷24
01 = ÷25
00 = ÷32
M1
(Pullup)
840001-34
16 Lead VFQFN
3mm x 3mm x 0.95 package body
K Package
Top View
M0
(Pullup)
N1
(Pullup)
N0
(Pullup)
840001-34 Rev A 3/30/15
1
©2015 Integrated Device Technology, Inc.
N1
REF_OUT
nc
8
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